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I.A. Kartsonakis is a chemist and has an MSc in polymer science and its applications. He has a PhD in chemistry with a focus on corrosion protection of metal alloys, synthesis, and characterization via the Sol-Gel method of hybrid organic-inorganic coatings, as well as nanocontainers. His work is focused on: i. Synthesis and characterization of ceramic powders, nanomaterials, and multilayered ceramic/hybrid coatings, fibers, cement/polymer composites; ii. Study of corrosion processes on materials using electrochemical techniques; iii. Management of R&D projects. He is a member of the Section Editorial Boards of “Chemistry” and “Materials” in the journal Applied Sciences (ISSN 2076-3417; IF: 2.474). He has organized five Special Issues as Guest Editor of Applied Sciences, Fibers and Frontiers in Bioengineering and Biotechnology. He is the external consultant at Pöyry Switzerland Ltd in the field of metal alloys corrosion protection; an independent expert appointed as the Evaluator of the General Secretariat of Research and Technology of Greece; and an independent expert consultant as a Project Peer Reviewer of the Science Fund of the Republic of Serbia.
Silver nanoparticles (AgNPs) exert profound physicochemical, biological, and antimicrobial properties, therefore, they have been extensively studied for a variety of applications such as food packaging and cultural heritage protection. However, restrictions in their stability, aggregation phenomena, and toxicity limit their extensive use. Hence, the use of functional substrates that promote the silver nanoparticles’ growth and allow the formation of uniform-sized, evenly distributed, as well as stable nanoparticles, has been suggested. This study reports on the fabrication and the characterization of hydrophilic polymer spheres including nanoparticles with intrinsic antifungal properties. Poly (methacrylic acid) microspheres were synthesized, employing the distillation precipitation method, to provide monodisperse spherical substrates for the growth of silver nanoparticles, utilizing the co-precipitation of silver nitrate in aqueous media. The growth and the aggregation potential of the silver nanoparticles were studied, whereas the antifungal activity of the produced nanostructures was evaluated against the black mold-causing fungus Aspergillus niger. The produced structures exhibit dose-dependent antifungal activity. Therefore, they could potentially be employed for the protection and preservation of cultural heritage artifacts and considered as new agents for food protection from fungal contamination during storage.
Panagiotis Kainourgios; Leto-Aikaterini Tziveleka; Ioannis Kartsonakis; Efstathia Ioannou; Vassilios Roussis; Costas Charitidis. Silver Nanoparticles Grown on Cross-Linked Poly (Methacrylic Acid) Microspheres: Synthesis, Characterization, and Antifungal Activity Evaluation. Chemosensors 2021, 9, 152 .
AMA StylePanagiotis Kainourgios, Leto-Aikaterini Tziveleka, Ioannis Kartsonakis, Efstathia Ioannou, Vassilios Roussis, Costas Charitidis. Silver Nanoparticles Grown on Cross-Linked Poly (Methacrylic Acid) Microspheres: Synthesis, Characterization, and Antifungal Activity Evaluation. Chemosensors. 2021; 9 (7):152.
Chicago/Turabian StylePanagiotis Kainourgios; Leto-Aikaterini Tziveleka; Ioannis Kartsonakis; Efstathia Ioannou; Vassilios Roussis; Costas Charitidis. 2021. "Silver Nanoparticles Grown on Cross-Linked Poly (Methacrylic Acid) Microspheres: Synthesis, Characterization, and Antifungal Activity Evaluation." Chemosensors 9, no. 7: 152.
This study aims to examine how core–shell super absorbent polymers (SAPs) can be effective in relation to recycling processes by using them as triggerable materials in coating binders. Super absorbent polymers are partially cross-linked, three-dimensional polymer networks that can absorb and retain water. Coatings based on an acrylic binder, including SAPs, were applied onto plastic substrates of acrylonitrile–butadiene–styrene/polycarbonate. The incorporation of 1 wt.% and 5 wt.% SAPs into the coatings resulted in the debonding of the coatings from the substrates under a steam treatment. The trigger mechanism for the core–shell hydrophilic SAPs relies on the different abilities of the core and shell materials to be swollen. Therefore, under the influence of steam, SAPs can enhance their shape due to water absorption and the breaking of the inorganic shell. This results in the reduction of the attachment between the primer layer and both the top coating and the substrate, thus enabling the detachment of the top coating from the corresponding substrate. The obtained results from this study can be considered as potential formulations for plastic recycling applications in industries.
Ioannis Kartsonakis; Panagiotis Goulis; Costas Charitidis. Triggerable Super Absorbent Polymers for Coating Debonding Applications. Polymers 2021, 13, 1432 .
AMA StyleIoannis Kartsonakis, Panagiotis Goulis, Costas Charitidis. Triggerable Super Absorbent Polymers for Coating Debonding Applications. Polymers. 2021; 13 (9):1432.
Chicago/Turabian StyleIoannis Kartsonakis; Panagiotis Goulis; Costas Charitidis. 2021. "Triggerable Super Absorbent Polymers for Coating Debonding Applications." Polymers 13, no. 9: 1432.
The management of energy consumption in the building sector is of crucial concern for modern societies. Fossil fuels' reduced availability, along with the environmental implications they cause, emphasize the necessity for the development of new technologies using renewable energy resources. Taking into account the growing resource shortages, as well as the ongoing deterioration of the environment, the building energy performance improvement using phase change materials (PCMs) is considered as a solution that could balance the energy supply together with the corresponding demand. Thermal energy storage systems with PCMs have been investigated for several building applications as they constitute a promising and sustainable method for reduction of fuel and electrical energy consumption, while maintaining a comfortable environment in the building envelope. These compounds can be incorporated into building construction materials and provide passive thermal sufficiency, or they can be used in heating, ventilation, and air conditioning systems, domestic hot water applications, etc. This study presents the principles of latent heat thermal energy storage systems with PCMs. Furthermore, the materials that can be used as PCMs, together with the most effective methods for improving their thermal performance, as well as various passive applications in the building sector, are also highlighted. Finally, special attention is given to the encapsulated PCMs that are composed of the core material, which is the PCM, and the shell material, which can be inorganic or organic, and their utilization inside constructional materials.
Christina Podara; Ioannis Kartsonakis; Costas Charitidis. Towards Phase Change Materials for Thermal Energy Storage: Classification, Improvements and Applications in the Building Sector. Applied Sciences 2021, 11, 1490 .
AMA StyleChristina Podara, Ioannis Kartsonakis, Costas Charitidis. Towards Phase Change Materials for Thermal Energy Storage: Classification, Improvements and Applications in the Building Sector. Applied Sciences. 2021; 11 (4):1490.
Chicago/Turabian StyleChristina Podara; Ioannis Kartsonakis; Costas Charitidis. 2021. "Towards Phase Change Materials for Thermal Energy Storage: Classification, Improvements and Applications in the Building Sector." Applied Sciences 11, no. 4: 1490.
Cementitious structures have prevailed worldwide and are expected to exhibit further growth in the future. Nevertheless, cement cracking is an issue that needs to be addressed in order to enhance structure durability and sustainability especially when exposed to aggressive environments. The purpose of this work was to examine the impact of the Superabsorbent Polymers (SAPs) incorporation into cementitious composite materials (mortars) with respect to their structure (hybrid structure consisting of organic core—inorganic shell) and evaluate the microstructure and self-healing properties of the obtained mortars. The applied SAPs were tailored to maintain their functionality in the cementitious environment. Control and mortar/SAPs specimens with two different SAPs concentrations (1 and 2% bwoc) were molded and their mechanical properties were determined according to EN 196-1, while their microstructure and self-healing behavior were evaluated via microCT. Compressive strength, a key property for mortars, which often degrades with SAPs incorporation, in this work, practically remained intact for all specimens. This is coherent with the porosity reduction and the narrower range of pore size distribution for the mortar/SAPs specimens as determined via microCT. Moreover, the self-healing behavior of mortar-SAPs specimens was enhanced up to 60% compared to control specimens. Conclusively, the overall SAPs functionality in cementitious-based materials was optimized.
Irene A. Kanellopoulou; Ioannis A. Kartsonakis; Costas A. Charitidis. The Effect of Superabsorbent Polymers on the Microstructure and Self-Healing Properties of Cementitious-Based Composite Materials. Applied Sciences 2021, 11, 700 .
AMA StyleIrene A. Kanellopoulou, Ioannis A. Kartsonakis, Costas A. Charitidis. The Effect of Superabsorbent Polymers on the Microstructure and Self-Healing Properties of Cementitious-Based Composite Materials. Applied Sciences. 2021; 11 (2):700.
Chicago/Turabian StyleIrene A. Kanellopoulou; Ioannis A. Kartsonakis; Costas A. Charitidis. 2021. "The Effect of Superabsorbent Polymers on the Microstructure and Self-Healing Properties of Cementitious-Based Composite Materials." Applied Sciences 11, no. 2: 700.
Metallic components consisting of magnesium, aluminum, steel, and their alloys are widely used in a plethora of applications because of their exceptional mechanical properties and their overall durability. However, they are often damaged by mechanical or chemical processes. Mechanical damage that is caused by the impact of solid particles is called erosion, while electrochemical damage that results from chemical degradation is termed corrosion. The corrosion phenomena, to which every metallic substrate is subjected, eventually result in the degradation of the metal and the deterioration of its properties.
Ioannis A. Kartsonakis. Special Issue on “Advances in Organic Corrosion Inhibitors and Protective Coatings”. Applied Sciences 2020, 11, 123 .
AMA StyleIoannis A. Kartsonakis. Special Issue on “Advances in Organic Corrosion Inhibitors and Protective Coatings”. Applied Sciences. 2020; 11 (1):123.
Chicago/Turabian StyleIoannis A. Kartsonakis. 2020. "Special Issue on “Advances in Organic Corrosion Inhibitors and Protective Coatings”." Applied Sciences 11, no. 1: 123.
The aim of this study is to synthesize an organic core-shell co-polymer with a different glass transition temperature (Tg) between the core and the shell that can be used for several applications such as the selective debonding of coatings or the release of encapsulated materials. The co-polymer was synthesized using free radical polymerization and was characterized with respect to its morphology, composition and thermal behavior. The obtained results confirmed the successful synthesis of the co-polymer copolymer poly(methyl methacrylate)@poly(methacrylic acid-co-ethylene glycol dimethacrylate), [email protected](MAA-co-EGDMA), which can be used along with water-based solvents. Furthermore, the Tg of the polymer’s core PMMA was 104 °C, while the Tg of the shell P(MAA-co-EGDMA) was 228 °C, making it appropriate for a wide variety of applications. It is worth mentioning that by following this specific experimental procedure, methacrylic acid was copolymerized in water, as the shell of the copolymer, without forming a gel-like structure (hydrogel), as happens when a monomer is polymerized in aqueous media, such as in the case of super-absorbent polymers. Moreover, the addition and subsequent polymerization of the monomer methyl methacrylate (MAA) into the mixture of the already polymerized PMMA resulted in a material that was uniform in size, without any agglomerations or sediments.
Panagiotis Goulis; Ioannis A. Kartsonakis; Costas A. Charitidis. Synthesis and Characterization of a Core-Shell Copolymer with Different Glass Transition Temperatures. Fibers 2020, 8, 71 .
AMA StylePanagiotis Goulis, Ioannis A. Kartsonakis, Costas A. Charitidis. Synthesis and Characterization of a Core-Shell Copolymer with Different Glass Transition Temperatures. Fibers. 2020; 8 (11):71.
Chicago/Turabian StylePanagiotis Goulis; Ioannis A. Kartsonakis; Costas A. Charitidis. 2020. "Synthesis and Characterization of a Core-Shell Copolymer with Different Glass Transition Temperatures." Fibers 8, no. 11: 71.
In the present work, an assessment of the corrosion behavior of mild steel in the presence of an organic corrosion inhibitor loaded into hybrid composite materials is performed. Hybrid organic–inorganic nanocontainers based on cerium and titanium oxides were fabricated via a combination of radical polymerization together with the coprecipitation method and sol-gel technique. The corrosion inhibition role of these hybrid materials loaded with an inhibitor is considered. A set of characterization assays addressing morphology, composition and structural aspects of the exposed steels is illustrated, along with electrochemical evaluations. The results reveal enhanced stimuli responsive anticorrosion ability of the produced hybrid materials. Furthermore, upon corrosion, new compounds are formed onto the exposed areas of the treated metals. The conducted experiments shed light on the corrosion mechanisms for steel alloys as well as the actuation of the fabricated composite materials, paving the way for future developments in this area.
Ioannis A. Kartsonakis; Costas A. Charitidis. Corrosion Protection Evaluation of Mild Steel: The Role of Hybrid Materials Loaded with Inhibitors. Applied Sciences 2020, 10, 6594 .
AMA StyleIoannis A. Kartsonakis, Costas A. Charitidis. Corrosion Protection Evaluation of Mild Steel: The Role of Hybrid Materials Loaded with Inhibitors. Applied Sciences. 2020; 10 (18):6594.
Chicago/Turabian StyleIoannis A. Kartsonakis; Costas A. Charitidis. 2020. "Corrosion Protection Evaluation of Mild Steel: The Role of Hybrid Materials Loaded with Inhibitors." Applied Sciences 10, no. 18: 6594.
Mild or low-carbon steel has an increasing utilization and is widely used for building construction, machinery parts, and pipelines, because it can be machined easily and has enhanced weldability as well as a low price. In any case, the corrosion resistance of mild steel under the conditions in industrial applications or in atmosphere is a thoughtful concern. This study inquires into the application of 2-mecraptobenzothiazole (MBT) and Na2HPO4 as corrosion inhibitors for the protection of API 5L X42 pipeline steel in 3.5 wt % NaCl as well as in water from the Athens city supply system. The electrochemical/morphological characterizations of the aforementioned mild steel proved that the corrosion protection mechanisms can be assigned to the protective layers created onto the metal surface because of the presence of the inhibitors, which prevent chloride’s penetration. The synergistic effect of the MBT and Na2HPO4 corrosion inhibition behavior, in a molar ratio of 1:1, revealed that the additives performed effectively with corrosion inhibition efficiency above 90%.
Ioannis A. Kartsonakis; Panagiota Stamatogianni; Evangelia K. Karaxi; Costas A. Charitidis. Comparative Study on the Corrosion Inhibitive Effect of 2-Mecraptobenzothiazole and Na2HPO4 on Industrial Conveying API 5L X42 Pipeline Steel. Applied Sciences 2019, 10, 290 .
AMA StyleIoannis A. Kartsonakis, Panagiota Stamatogianni, Evangelia K. Karaxi, Costas A. Charitidis. Comparative Study on the Corrosion Inhibitive Effect of 2-Mecraptobenzothiazole and Na2HPO4 on Industrial Conveying API 5L X42 Pipeline Steel. Applied Sciences. 2019; 10 (1):290.
Chicago/Turabian StyleIoannis A. Kartsonakis; Panagiota Stamatogianni; Evangelia K. Karaxi; Costas A. Charitidis. 2019. "Comparative Study on the Corrosion Inhibitive Effect of 2-Mecraptobenzothiazole and Na2HPO4 on Industrial Conveying API 5L X42 Pipeline Steel." Applied Sciences 10, no. 1: 290.
In this study, the carbon fiber manufacturing process is investigated, using high-density polyethylene (HDPE) and esterified lignin either with lactic acid (LA) or with poly(lactic acid) (PLA) as precursors. More specifically, lignin was modified using either LA or PLA in order to increase its chemical affinity with HDPE. The modified compounds were continuously melt spun to fibrous materials by blending with HDPE in order to fabricate a carbon fiber precursor. The obtained products were characterized with respect to their morphology, as well as their structure and chemical composition. Moreover, an assessment of both physical and structural transformations after modification of lignin with LA and PLA was performed in order to evaluate the spinning ability of the composite fibers, as well as the thermal processing to carbon fibers. This bottom–up approach seems to be able to provide a viable route considering large scale production in order to transform lignin in value-added product. Tensile tests revealed that the chemical lignin modification allowed an enhancement in its spinning ability due to its compatibility improvement with the commercial low-cost and thermoplastic HDPE polymer. Finally, stabilization and carbonization thermal processing was performed in order to obtain carbon fibers.
Panagiotis Goulis; Ioannis A. Kartsonakis; George Konstantopoulos; Costas A. Charitidis. Synthesis and Processing of Melt Spun Materials from Esterified Lignin with Lactic Acid. Applied Sciences 2019, 9, 5361 .
AMA StylePanagiotis Goulis, Ioannis A. Kartsonakis, George Konstantopoulos, Costas A. Charitidis. Synthesis and Processing of Melt Spun Materials from Esterified Lignin with Lactic Acid. Applied Sciences. 2019; 9 (24):5361.
Chicago/Turabian StylePanagiotis Goulis; Ioannis A. Kartsonakis; George Konstantopoulos; Costas A. Charitidis. 2019. "Synthesis and Processing of Melt Spun Materials from Esterified Lignin with Lactic Acid." Applied Sciences 9, no. 24: 5361.
This study focuses on the design, development, and validation of two coating systems for corrosion protection of hot dip galvanized steel substrates. The coatings consist of epoxy-based resin reinforced with core-shell microcapsules, either cerium oxide or cuprous oxide core and a polymeric shell doped with cerium ions. The effect of the modification of the epoxy resin with a liquid rubber polymer has also been studied. Corrosion studies via electrochemical impedance spectroscopy (EIS) revealed that the coatings have enhanced barrier properties. Moreover, EIS studies on coatings with artificial scribes, demonstrated an autonomous response to damage and a self-healing effect. Heat-induced material re-flow has also been observed after exposure to temperature higher than the Tg of the system, which offered an additional self-healing mechanism, partially inhibiting the underlying corrosion processes when the liquid rubber is present in the system.
Evangelia K. Karaxi; Ioannis A. Kartsonakis; Costas A. Charitidis; Ioannis Kartsonakis. Assessment of Self-Healing Epoxy-Based Coatings Containing Microcapsules Applied on Hot Dipped Galvanized Steel. Frontiers in Materials 2019, 6, 1 .
AMA StyleEvangelia K. Karaxi, Ioannis A. Kartsonakis, Costas A. Charitidis, Ioannis Kartsonakis. Assessment of Self-Healing Epoxy-Based Coatings Containing Microcapsules Applied on Hot Dipped Galvanized Steel. Frontiers in Materials. 2019; 6 ():1.
Chicago/Turabian StyleEvangelia K. Karaxi; Ioannis A. Kartsonakis; Costas A. Charitidis; Ioannis Kartsonakis. 2019. "Assessment of Self-Healing Epoxy-Based Coatings Containing Microcapsules Applied on Hot Dipped Galvanized Steel." Frontiers in Materials 6, no. : 1.
This study presents the development of novel submicron super absorbent polymers (SAPs) used as admixtures in cement‐based matrices with significant advantages over conventional products. The produced SAPs were characterized in respect of their morphology and composition, while their water absorption capacity was determined in different electrolyte solutions. The hybrid core‐shell spherical structure of the fabricated materials offered significant compatibility enhancement with cement while the workability of the mixture was maintained. The assessment of the cement‐based composites including SAPs revealed that their flexural strength increased by 78%. Self‐healing/sealing behavior was assessed by monitoring the crack sealing via SEM, elemental analysis of the healing products, and determination of the water absorbance coefficient for different times of treatment. The cement/SAPs composites with a concentration of SAPs 2% by weight of cement exhibited self‐healing/sealing responsive capability when an artificial crack was induced. According to the SEM characterization, the crack demonstrated complete healing for the better part of its length after 28 days of treatment.
Irene Kanellopoulou; Evangelia K. Karaxi; Anna Karatza; Ioannis A. Kartsonakis; Costas A. Charitidis. Effect of submicron admixtures on mechanical and self‐healing properties of cement‐based composites. Fatigue & Fracture of Engineering Materials & Structures 2019, 42, 1494 -1509.
AMA StyleIrene Kanellopoulou, Evangelia K. Karaxi, Anna Karatza, Ioannis A. Kartsonakis, Costas A. Charitidis. Effect of submicron admixtures on mechanical and self‐healing properties of cement‐based composites. Fatigue & Fracture of Engineering Materials & Structures. 2019; 42 (7):1494-1509.
Chicago/Turabian StyleIrene Kanellopoulou; Evangelia K. Karaxi; Anna Karatza; Ioannis A. Kartsonakis; Costas A. Charitidis. 2019. "Effect of submicron admixtures on mechanical and self‐healing properties of cement‐based composites." Fatigue & Fracture of Engineering Materials & Structures 42, no. 7: 1494-1509.
Lignin has attracted significant attention as an alternative carbon source for conversion to carbon fibers due to material’s abundance, high carbon content, low cost as byproduct of paper industry and renewable nature. The quality of polymer fibers spun by lignin depends on the spinning method and chemical modification of raw material. The purpose of this study is to improve the lignin fiber spinning by optimization of dry and melt spinning processes. Lignin is chemically modified through esterification and coupling reactions with other compounds and blended with polymer solutions. Various polymer-lignin fibers with diameters in the range of μm are successfully produced and characterized.
C.A. Charitidis; D.A. Dragatogiannis; P. Goulis; I.A. Kartsonakis; E. Koumoulos; S. Soulis; S. Anagnou; K. Mpalias. Functionalized Innovative Carbon Fibers Developed from Novel Precursors with Cost Efficiency and Tailored Properties. Materials Today: Proceedings 2018, 5, 27662 -27671.
AMA StyleC.A. Charitidis, D.A. Dragatogiannis, P. Goulis, I.A. Kartsonakis, E. Koumoulos, S. Soulis, S. Anagnou, K. Mpalias. Functionalized Innovative Carbon Fibers Developed from Novel Precursors with Cost Efficiency and Tailored Properties. Materials Today: Proceedings. 2018; 5 (14):27662-27671.
Chicago/Turabian StyleC.A. Charitidis; D.A. Dragatogiannis; P. Goulis; I.A. Kartsonakis; E. Koumoulos; S. Soulis; S. Anagnou; K. Mpalias. 2018. "Functionalized Innovative Carbon Fibers Developed from Novel Precursors with Cost Efficiency and Tailored Properties." Materials Today: Proceedings 5, no. 14: 27662-27671.
The quality of high density polyethylene (HDPE) - lignin spun fibers depends on the spinning method and the chemical modification of the raw material. On the other hand, nylon-type polymers are widely known for their simple experimental synthesis and use. The goal of this study was the fabrication of composites containing lignin, nylon and multi-walled carbon nanotubes (MWCNTs) based fibers with enhanced mechanical properties. Therefore, a nylon-type polymer was synthesized, using diethylenetriamine and sebacoyl chloride, and was conjugated with lignin as well as MWCNTs with the aim of determining the materials' compatibility, differences in chemical behavior as well as their ability to be melt spun and be further processed. The materials were compounded with HDPE and melt spun, producing fibers that were characterized in respect of their morphology, structural, chemical and elemental composition. Finally, the HDPE fibers were used for the production of one dimensional composites inside dumb bell type sacrificial templates with an epoxy resin solution. The composites, which contained fibers enriched with oxidized lignin and MWCNTs, presented higher elastic modulus and ultimate tensile strength than the rest of the composites. This is a novel attempt, presenting an innovation concerning durable fibers with low cost materials and procedures.
Panagiotis Goulis; Ioannis A. Kartsonakis; Konstantinos Mpalias; Costas A. Charitidis. Effect of Lignin and CNTs on the properties of melt-spun polymeric fibers. MATEC Web of Conferences 2018, 188, 01026 .
AMA StylePanagiotis Goulis, Ioannis A. Kartsonakis, Konstantinos Mpalias, Costas A. Charitidis. Effect of Lignin and CNTs on the properties of melt-spun polymeric fibers. MATEC Web of Conferences. 2018; 188 ():01026.
Chicago/Turabian StylePanagiotis Goulis; Ioannis A. Kartsonakis; Konstantinos Mpalias; Costas A. Charitidis. 2018. "Effect of Lignin and CNTs on the properties of melt-spun polymeric fibers." MATEC Web of Conferences 188, no. : 01026.
In this work, materials that as additives in cement promote self-sealing/healing properties by the gradual release of water they absorb were synthesized, characterized and evaluated. Specifically, hybrid SAPs that absorb high ammounts of water encapsulated with SiO2 that facilitates their incorporation in the matrix since it improves their chemical affinity were investigated. The structure and morphology of the fabricated SAPs were characterized analytically and confirmed the synthesis of P(MAA-co-EGDMA)@SiO2 nanocomposite. Its particle size is expected to reduce the size of the pores formed due to the absorbing/desorbing water process during the mixing and curing of cement. Moreover, the water absorbance of the above mentioned material as well as its ability to maintain its original structure during subsequent cycles of absorbing/desorbing water from different mediums and specifically from distilled water (DW) and cement slurry filtrate (CS) were evaluated. CS was chosen to mimic the cementitious environment considering the presence of various ions and its pH value (~ 12). The results revealed that the absorption ratio of P(MAA-co-EGDMA)@SiO2 in DW and CS was higher than 1500 wt.% its original dry weight, while SEM pictures proved that the hybrid SAPs maintained their structure after the water absorption tests.
Irene Kanellopoulou; Evangelia K. Karaxi; Anna Karatza; Ioannis A. Kartsonakis; Costas Charitidis. Hybrid superabsorbent polymer networks (SAPs) encapsulated with SiO2 for structural applications. MATEC Web of Conferences 2018, 188, 01025 .
AMA StyleIrene Kanellopoulou, Evangelia K. Karaxi, Anna Karatza, Ioannis A. Kartsonakis, Costas Charitidis. Hybrid superabsorbent polymer networks (SAPs) encapsulated with SiO2 for structural applications. MATEC Web of Conferences. 2018; 188 ():01025.
Chicago/Turabian StyleIrene Kanellopoulou; Evangelia K. Karaxi; Anna Karatza; Ioannis A. Kartsonakis; Costas Charitidis. 2018. "Hybrid superabsorbent polymer networks (SAPs) encapsulated with SiO2 for structural applications." MATEC Web of Conferences 188, no. : 01025.
Carbon-based nanomaterials are promising reinforcing elements for the development of “smart” self-sensing cementitious composites due to their exceptional mechanical and electrical properties. Significant research efforts have been committed on the synthesis of cement-based composite materials reinforced with carbonaceous nanostructures, covering every aspect of the production process (type of nanomaterial, mixing process, electrode type, measurement methods etc.). In this study, the aim is to develop a well-defined repeatable procedure for the fabrication as well as the evaluation of pressure-sensitive properties of intrinsically self-sensing cementitious composites incorporating carbon- based nanomaterials. Highly functionalized multi-walled carbon nanotubes with increased dispersibility in polar media were used in the development of advanced reinforced mortar specimens which increased their mechanical properties and provided repeatable pressure-sensitive properties.
Evangelia K. Karaxi; Irene A. Kanellopoulou; Anna Karatza; Ioannis A. Kartsonakis; Costas A. Charitidis. Fabrication of carbon nanotube-reinforced mortar specimens: evaluation of mechanical and pressure-sensitive properties. MATEC Web of Conferences 2018, 188, 01019 .
AMA StyleEvangelia K. Karaxi, Irene A. Kanellopoulou, Anna Karatza, Ioannis A. Kartsonakis, Costas A. Charitidis. Fabrication of carbon nanotube-reinforced mortar specimens: evaluation of mechanical and pressure-sensitive properties. MATEC Web of Conferences. 2018; 188 ():01019.
Chicago/Turabian StyleEvangelia K. Karaxi; Irene A. Kanellopoulou; Anna Karatza; Ioannis A. Kartsonakis; Costas A. Charitidis. 2018. "Fabrication of carbon nanotube-reinforced mortar specimens: evaluation of mechanical and pressure-sensitive properties." MATEC Web of Conferences 188, no. : 01019.
This study is focused on the manufacturing of cost effective fibers that can be used as durable reinforcing materials. Nylon aliphatic polymer was synthesized and conjugated with softwood kraft lignin, multi-wall carbon nanotubes as well as with commercial polymers such as poly(lactic acid) and polypropylene. After the synthesis, the materials were melt spun producing fibers that were characterized in respect of their morphology, structural, chemical and elemental composition. In addition, epoxy composites were manufactured, incorporating the aforementioned fibers, in order to assess their mechanical behavior via tensile testing. The produced composites exhibited improved mechanical properties in respect of ultimate tensile strength and elastic modulus. The fiber composites were synthesized via a simple method, which combines chemistry and engineering in a multi-stage experimental process.
Panagiotis Goulis; Ioannis A. Kartsonakis; Konstantinos Mpalias; Costas Charitidis. Combined effects of multi-walled carbon nanotubes and lignin on polymer fiber-reinforced epoxy composites. Materials Chemistry and Physics 2018, 218, 18 -27.
AMA StylePanagiotis Goulis, Ioannis A. Kartsonakis, Konstantinos Mpalias, Costas Charitidis. Combined effects of multi-walled carbon nanotubes and lignin on polymer fiber-reinforced epoxy composites. Materials Chemistry and Physics. 2018; 218 ():18-27.
Chicago/Turabian StylePanagiotis Goulis; Ioannis A. Kartsonakis; Konstantinos Mpalias; Costas Charitidis. 2018. "Combined effects of multi-walled carbon nanotubes and lignin on polymer fiber-reinforced epoxy composites." Materials Chemistry and Physics 218, no. : 18-27.
The purpose of this study was the synthesis of novel low-cost carbon fibers along with the investigation of the optimal parameters of temperature and time for the stabilization of hybrid high-density polyethylene (HDPE) and lignin melt-spun fibers. These fibers were manufactured by physical compounding of HDPE and chemically-modified softwood kraft lignin (SKL) in order to produce green fiber precursors for carbon fiber synthesis. Stabilization tests were performed with respect to thermal treatment (physical method) and sulfonation treatment (chemical method). The results revealed that only chemical methods induce the desired thermal process-ability to the composite fibers in order to manufacture carbon fibers by using a simple method. This investigation shed light on the stabilization techniques of polymeric fibers in the absence of any cyclic groups in terms of environmentally-friendly mass production of carbon fibers using low-cost and green raw materials. This study facilitates incorporation of softwood lignin in homegrown polymeric fibers by a low-cost production process via melt-spinning of composite fibers, which were successfully stabilized using a facile chemical method and carbonized. Additionally, a comprehensive investigation of the thermal behavior of the samples was accomplished, by examining several ways and aspects of fiber thermal treating. The properties of all studied fibers are presented, compared, and discussed.
Panagiotis Goulis; Giorgos Konstantopoulos; Ioannis A. Kartsonakis; Konstantinos Mpalias; Stavros Anagnou; Dimitrios Dragatogiannis; Costas Charitidis. Thermal Treatment of Melt-Spun Fibers Based on High Density PolyEthylene and Lignin. C 2017, 3, 35 .
AMA StylePanagiotis Goulis, Giorgos Konstantopoulos, Ioannis A. Kartsonakis, Konstantinos Mpalias, Stavros Anagnou, Dimitrios Dragatogiannis, Costas Charitidis. Thermal Treatment of Melt-Spun Fibers Based on High Density PolyEthylene and Lignin. C. 2017; 3 (4):35.
Chicago/Turabian StylePanagiotis Goulis; Giorgos Konstantopoulos; Ioannis A. Kartsonakis; Konstantinos Mpalias; Stavros Anagnou; Dimitrios Dragatogiannis; Costas Charitidis. 2017. "Thermal Treatment of Melt-Spun Fibers Based on High Density PolyEthylene and Lignin." C 3, no. 4: 35.
Panayiotis Kainourgios; Ioannis Kartsonakis; Dimitrios A. Dragatogiannis; Elias Koumoulos; Panagiotis Goulis; Costas A. Charitidis. Electrochemical surface functionalization of carbon fibers for chemical affinity improvement with epoxy resins. Applied Surface Science 2017, 416, 593 -604.
AMA StylePanayiotis Kainourgios, Ioannis Kartsonakis, Dimitrios A. Dragatogiannis, Elias Koumoulos, Panagiotis Goulis, Costas A. Charitidis. Electrochemical surface functionalization of carbon fibers for chemical affinity improvement with epoxy resins. Applied Surface Science. 2017; 416 ():593-604.
Chicago/Turabian StylePanayiotis Kainourgios; Ioannis Kartsonakis; Dimitrios A. Dragatogiannis; Elias Koumoulos; Panagiotis Goulis; Costas A. Charitidis. 2017. "Electrochemical surface functionalization of carbon fibers for chemical affinity improvement with epoxy resins." Applied Surface Science 416, no. : 593-604.
This study is focused on the investigation of the morphology and the characteristics of carbon films, obtained by thermal chemical vapor deposition (T-CVD) on different substrates, during carbon nanotubes (CNTs) manufacturing. These films were examined, by means of optical and electronic microscopy, X-ray photoelectron spectroscopy and Raman spectroscopy. Additional measurements were conducted related with the estimation of their nanomechanical properties. The topography is studied, in combination with the assessment of their mechanical behavior at nanoscale. Through nanoindentation, hardness and elastic modulus together with wear resistance index (H/E) were evaluated. According to this study, it may be remarked that the obtained film is classified as an amorphous carbon film.
Aikaterini-Flora A. Trompeta; Elias P. Koumoulos; Ioannis A. Kartsonakis; Costas A. Charitidis. Advanced characterization of by-product carbon film obtained by thermal chemical vapor deposition during CNT manufacturing. Manufacturing Review 2017, 4, 7 .
AMA StyleAikaterini-Flora A. Trompeta, Elias P. Koumoulos, Ioannis A. Kartsonakis, Costas A. Charitidis. Advanced characterization of by-product carbon film obtained by thermal chemical vapor deposition during CNT manufacturing. Manufacturing Review. 2017; 4 ():7.
Chicago/Turabian StyleAikaterini-Flora A. Trompeta; Elias P. Koumoulos; Ioannis A. Kartsonakis; Costas A. Charitidis. 2017. "Advanced characterization of by-product carbon film obtained by thermal chemical vapor deposition during CNT manufacturing." Manufacturing Review 4, no. : 7.
Manufacturing Review is a journal on developments and applications of manufacturing engineering, technology and applied sciences
Ioannis A. Kartsonakis; Elias P. Koumoulos; Costas A. Charitidis. Advancement in corrosion resistance of AA 2024-T3 through sol-gel coatings including nanocontainers. Manufacturing Review 2017, 4, 2 .
AMA StyleIoannis A. Kartsonakis, Elias P. Koumoulos, Costas A. Charitidis. Advancement in corrosion resistance of AA 2024-T3 through sol-gel coatings including nanocontainers. Manufacturing Review. 2017; 4 ():2.
Chicago/Turabian StyleIoannis A. Kartsonakis; Elias P. Koumoulos; Costas A. Charitidis. 2017. "Advancement in corrosion resistance of AA 2024-T3 through sol-gel coatings including nanocontainers." Manufacturing Review 4, no. : 2.