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The use of shrimp waste to obtain chitosan (Ch) is an essential issue, considering a circular economy, waste management, and its application to environmentally friendly materials. In this study, northern prawn shells were utilized to obtain Ch, which could then be used for synthesizing chitosan-based polyurethane (PUR+Ch) foams with different Ch concentration. The chemical structure, morphology, hardness, thermal properties, viscoelastic properties, and sorption properties in relation to oil and water of these materials were determined. The results present that the addition of Ch into PUR influences the physicochemical characteristics and properties of the tested materials. PUR+Ch foams with 1–3 wt% Ch had more open cells and were softer than neat PUR. PUR+Ch1 had the best thermal properties. PUR+Ch2 foam with 2 wt% Ch as a whole was characterized as having the highest water sorption. The PUR+Ch1 foam with 1 wt% Ch had the best oil sorption. This paper shows that the modification of PUR by Ch is a very promising solution, and PUR+Ch foams can be applied in the water treatment of oil spills, which can be dangerous to the water environment.
Agnieszka Piotrowska-Kirschling; Adam Olszewski; Jakub Karczewski; Łukasz Piszczyk; Joanna Brzeska. Synthesis and Physicochemical Characteristics of Chitosan-Based Polyurethane Flexible Foams. Processes 2021, 9, 1394 .
AMA StyleAgnieszka Piotrowska-Kirschling, Adam Olszewski, Jakub Karczewski, Łukasz Piszczyk, Joanna Brzeska. Synthesis and Physicochemical Characteristics of Chitosan-Based Polyurethane Flexible Foams. Processes. 2021; 9 (8):1394.
Chicago/Turabian StyleAgnieszka Piotrowska-Kirschling; Adam Olszewski; Jakub Karczewski; Łukasz Piszczyk; Joanna Brzeska. 2021. "Synthesis and Physicochemical Characteristics of Chitosan-Based Polyurethane Flexible Foams." Processes 9, no. 8: 1394.
Shrimp waste is a common waste in seafood processing. It is used as part of the fish meal which is added to feed. Bearing in mind the Green Deal and sustainability development, it was proposed to use northern prawn shells to obtain chitosan (Ch), which could then be used for polyurethane (PUR) modification. In ports, oil micro-spills often flow into the waters of gulfs and, consequently, into the sea. Systematic chemical and petroleum water pollution may pose a threat to flora and fauna. In this study, chitosan, which was obtained from shrimp shells, was used to synthesize polyurethane–chitosan foams (PUR+Ch) with different chitosan concentrations. Selected physico-chemical and sorption properties in relation to oil and water of these materials were determined. It was found that the amount of Ch added to the foam affected its morphology, hardness, density, and thermal and sorption properties. PUR foam with a 1.5% weight of Ch was characterized as having the highest water and oil sorption. The advantages of the tested material as an innovative product with potentially significant proecological values were estimated using strengths–weaknesses–opportunities–threats (SWOT) analysis. The conducted preliminary research made it possible to demonstrate the use of these materials in the processes of water treatment with the mentioned micropollutants.
Agnieszka Piotrowska-Kirschling; Katarzyna Szelągowska-Rudzka; Jakub Karczewski; Joanna Brzeska. Application of Shrimp Waste for the Synthesis of Polyurethane–Chitosan Materials with Potential Use in Sorption of Oil Micro-Spills in Water Treatment. Sustainability 2021, 13, 5098 .
AMA StyleAgnieszka Piotrowska-Kirschling, Katarzyna Szelągowska-Rudzka, Jakub Karczewski, Joanna Brzeska. Application of Shrimp Waste for the Synthesis of Polyurethane–Chitosan Materials with Potential Use in Sorption of Oil Micro-Spills in Water Treatment. Sustainability. 2021; 13 (9):5098.
Chicago/Turabian StyleAgnieszka Piotrowska-Kirschling; Katarzyna Szelągowska-Rudzka; Jakub Karczewski; Joanna Brzeska. 2021. "Application of Shrimp Waste for the Synthesis of Polyurethane–Chitosan Materials with Potential Use in Sorption of Oil Micro-Spills in Water Treatment." Sustainability 13, no. 9: 5098.
Materials science is an interdisciplinary area of studies. This science focuses on the influence of the physico-chemical properties of materials on their application in human everyday lives. The materials’ synthesis should be developed in accordance with sustainable development. Polyurethanes (PUR) represent a significant consumption of plastic in the world. Modification of PUR, e.g., with polysaccharide of natural origin (chitosan, Chit), should have a positive effect on their functional properties and degradability in the natural environment. The basic parameters affecting the scope and direction of changes are the size and quantity of the chitosan particles. The impact assessment of chitosan on the chemical structure, morphology, thermal properties, crystallinity, mechanical properties, flammability, water sorption, adsorption properties, degradability, and biological activity of PUR/Chit composites (without other additives) is discussed in this article. To the best of our knowledge, recent literature does not contain a study discussing the direct impact of the presence of chitosan in the structure of PUR/Chit composite on its properties, regardless of the intended uses. This paper provides an overview of publications, which presents the results of a study on the effect of adding chitosan in polyurethane/chitosan composites without other additives on the properties of polyurethane.
Agnieszka Piotrowska-Kirschling; Joanna Brzeska. The Effect of Chitosan on the Chemical Structure, Morphology, and Selected Properties of Polyurethane/Chitosan Composites. Polymers 2020, 12, 1205 .
AMA StyleAgnieszka Piotrowska-Kirschling, Joanna Brzeska. The Effect of Chitosan on the Chemical Structure, Morphology, and Selected Properties of Polyurethane/Chitosan Composites. Polymers. 2020; 12 (5):1205.
Chicago/Turabian StyleAgnieszka Piotrowska-Kirschling; Joanna Brzeska. 2020. "The Effect of Chitosan on the Chemical Structure, Morphology, and Selected Properties of Polyurethane/Chitosan Composites." Polymers 12, no. 5: 1205.
The kinetics of the aquation reaction of the [VO(ida)(bipy)]·2H2O (VO(ida)(bipy)) complex (where ida = iminodiacetate anion and bipy = 2,2’-bipyridine) promoted by [Fe(H2O)6]3+ ions were investigated in aqueous solutions. Spectrophotometric studies were carried out at different temperatures in the range of 293.15–313.15 K. The concentration of the [Fe(H2O)6]3+ (Fe3+) ions was kept within the range of 2 × 10–4 to 8 × 10–4 mol L–1, and the concentration of VO(ida)(bipy) was 1 × 10–3 mol L–1. The values of the observable reaction rate constants were calculated based on the Glint computer program. Furthermore, the mechanism for the aquation of VO(ida)(bipy), induced by Fe(III) ions, has been proposed.
Joanna Drzeżdżon; Agnieszka Piotrowska-Kirschling; Lech Chmurzyński; Dagmara Jacewicz. Aquation reaction of iminodiacetate complex of oxidovanadium(IV) with 2,2’-bipyridine induced by Fe(III) ions: Kinetic studies. Progress in Reaction Kinetics and Mechanism 2019, 44, 300 -306.
AMA StyleJoanna Drzeżdżon, Agnieszka Piotrowska-Kirschling, Lech Chmurzyński, Dagmara Jacewicz. Aquation reaction of iminodiacetate complex of oxidovanadium(IV) with 2,2’-bipyridine induced by Fe(III) ions: Kinetic studies. Progress in Reaction Kinetics and Mechanism. 2019; 44 (4):300-306.
Chicago/Turabian StyleJoanna Drzeżdżon; Agnieszka Piotrowska-Kirschling; Lech Chmurzyński; Dagmara Jacewicz. 2019. "Aquation reaction of iminodiacetate complex of oxidovanadium(IV) with 2,2’-bipyridine induced by Fe(III) ions: Kinetic studies." Progress in Reaction Kinetics and Mechanism 44, no. 4: 300-306.
The physicochemical properties of several chromium(III) complexes with ligands, such as picolinate, dipicolinate, oxalate, 2,2′-bipyridine, and 4,4′-dimethoxy-2,2′-bipyridine were investigated. First, the stability and formation constants of the synthesised chromium(III) complexes in aqueous solutions were evaluated with potentiometric titrations. In addition, the stoichiometry of each chromium(III) complex in water was analysed with conductometric titrations. Next, the potential antioxidant properties of chromium(III) compounds were determined by evaluating the ability of the synthesised complexes to reduce nitro blue tetrazolium salt. We also investigated the antimicrobial properties of the solutions of these compounds against Bacillus subtilis, Escherichia coli, Enterococcus faecalis, Pseudomonas aeruginosa, Staphylococcus aureus, and Staphylococcus epidermidis. The cytotoxic properties of chromium(III) complexes were tested using a human keratinocyte cell line (HaCaT).
Joanna Drzeżdżon; Agnieszka Piotrowska-Kirschling; Jacek Malinowski; Anna Kloska; Barbara Gawdzik; Lech Chmurzyński; Dagmara Jacewicz. Antimicrobial, cytotoxic, and antioxidant activities and physicochemical characteristics of chromium(III) complexes with picolinate, dipicolinate, oxalate, 2,2′-bipyridine, and 4,4′-dimethoxy-2,2′-bipyridine as ligands in aqueous solutions. Journal of Molecular Liquids 2019, 282, 441 -447.
AMA StyleJoanna Drzeżdżon, Agnieszka Piotrowska-Kirschling, Jacek Malinowski, Anna Kloska, Barbara Gawdzik, Lech Chmurzyński, Dagmara Jacewicz. Antimicrobial, cytotoxic, and antioxidant activities and physicochemical characteristics of chromium(III) complexes with picolinate, dipicolinate, oxalate, 2,2′-bipyridine, and 4,4′-dimethoxy-2,2′-bipyridine as ligands in aqueous solutions. Journal of Molecular Liquids. 2019; 282 ():441-447.
Chicago/Turabian StyleJoanna Drzeżdżon; Agnieszka Piotrowska-Kirschling; Jacek Malinowski; Anna Kloska; Barbara Gawdzik; Lech Chmurzyński; Dagmara Jacewicz. 2019. "Antimicrobial, cytotoxic, and antioxidant activities and physicochemical characteristics of chromium(III) complexes with picolinate, dipicolinate, oxalate, 2,2′-bipyridine, and 4,4′-dimethoxy-2,2′-bipyridine as ligands in aqueous solutions." Journal of Molecular Liquids 282, no. : 441-447.
The oxydiacetate complexes of copper(II) with 2,2′-bipyridine (bipy) and 1,10-phenanthroline (phen) have been investigated towards their kinetic and thermodynamic stability. The kinetics of the substitution reactions of the oxydiacetate complex of Cu2+ with bipy and phen have been studied in two types of surfactant solutions - anionic dodecyl sulfate sodium (SDS) and cationic hexadecyl trimethyl-ammonium bromide (CTAB). The values of the observable rate constants for the studied reactions have been determined using the “Glint” program. Moreover, the thermodynamic stability of the copper(II) complexes with oda, phen and bipy in aqueous solutions has been investigated using potentiometric titration method (PT). The concentration distributions of the studied complexes as a function of pH calculated based on the values of log βpqrs have been determined. Additionally, the antioxidant activities of the oxydiacetate complexes of copper(II) with bipy and phen have been studied by the nitro blue tetrazolium (NBT) test and the cyclic voltammetry (CV) technique.
Agnieszka Piotrowska-Kirschling; Joanna Drzeżdżon; Lech Chmurzyński; Dagmara Jacewicz. Kinetics and thermodynamic of reaction of oxydiacetate copper(II) complex with 2,2′-bipyridine and 1,10-phenanthroline in anionic and cationic surfactant solutions. Journal of Molecular Liquids 2018, 264, 470 -475.
AMA StyleAgnieszka Piotrowska-Kirschling, Joanna Drzeżdżon, Lech Chmurzyński, Dagmara Jacewicz. Kinetics and thermodynamic of reaction of oxydiacetate copper(II) complex with 2,2′-bipyridine and 1,10-phenanthroline in anionic and cationic surfactant solutions. Journal of Molecular Liquids. 2018; 264 ():470-475.
Chicago/Turabian StyleAgnieszka Piotrowska-Kirschling; Joanna Drzeżdżon; Lech Chmurzyński; Dagmara Jacewicz. 2018. "Kinetics and thermodynamic of reaction of oxydiacetate copper(II) complex with 2,2′-bipyridine and 1,10-phenanthroline in anionic and cationic surfactant solutions." Journal of Molecular Liquids 264, no. : 470-475.
The antioxidant properties of oxydiacetate complexes of cobalt(II) and nickel(II) with 1,10-phenantroline and 2,2′-bipyridine have been investigated towards the superoxide radical using the nitro blue tetrazolium chloride (NBT) test and the cyclic voltammetry (CV). Moreover, the biological activity of the complexes under study has been investigated in the Human Dermal Fibroblasts adult (HDFa) cell line. In the first step, the cytotoxic and the antiproliferative activities of the complexes were examined. Subsequently, the cytoprotective properties of the complexes have been investigated in an oxidative stress conditions induced by H2O2.
Agnieszka Piotrowska-Kirschling; Joanna Drzeżdżon; Anna Kloska; Dariusz Wyrzykowski; Lech Chmurzyński; Dagmara Jacewicz. Antioxidant and Cytoprotective Activity of Oxydiacetate Complexes of Cobalt(II) and Nickel(II) with 1,10-Phenantroline and 2,2′-Bipyridine. Biological Trace Element Research 2018, 185, 244 -251.
AMA StyleAgnieszka Piotrowska-Kirschling, Joanna Drzeżdżon, Anna Kloska, Dariusz Wyrzykowski, Lech Chmurzyński, Dagmara Jacewicz. Antioxidant and Cytoprotective Activity of Oxydiacetate Complexes of Cobalt(II) and Nickel(II) with 1,10-Phenantroline and 2,2′-Bipyridine. Biological Trace Element Research. 2018; 185 (1):244-251.
Chicago/Turabian StyleAgnieszka Piotrowska-Kirschling; Joanna Drzeżdżon; Anna Kloska; Dariusz Wyrzykowski; Lech Chmurzyński; Dagmara Jacewicz. 2018. "Antioxidant and Cytoprotective Activity of Oxydiacetate Complexes of Cobalt(II) and Nickel(II) with 1,10-Phenantroline and 2,2′-Bipyridine." Biological Trace Element Research 185, no. 1: 244-251.
The kinetics and thermodynamics have been studied for the reactions of the copper(II) complexes with iminodiacetate (ida), 2,2′-bipyridine (bipy) and 1,10-phenanthroline (phen) as ligands. The kinetics of substitution reactions of two aqua ligands for bipy and phen in the [Cu(ida)(H2O)2] coordination compound has been studied in water and three type of aqueous solutions of the following surfactants: anionic sodium dodecyl sulfate (SDS), cationic hexadecyl trimethyl-ammonium bromide (CTAB) and nonionic t-octylphenoxypolyetoxyethanol (Triton X-100). The progress of the substitution reactions in the studied solutions was monitored spectrophotometrically using the stopped-flow method. The studies have allowed the determination of the effect of the type of surfactant solutions on the rate of the substitution reaction. Moreover, the order of studied reactions has been determined. The research performed has also allowed us to propose the reaction mechanism of the [Cu(ida)(H2O)2] binary complex with chelate ligands (bipy or phen). In addition, the thermodynamic stability of complexes under study in aqueous solutions has been examined using the potentiometric titration method. Moreover, the potential scavenging activity of the copper(II) complexes has been investigated towards the superoxide radical.
Joanna Drzeżdżon; Agnieszka Piotrowska; Dariusz Wyrzykowski; Aleksandra Tesmar; Lech Chmurzyński; Dagmara Jacewicz. Kinetics and thermodynamics of the reaction of iminodiacetate copper(II) complexes with 1,10-phenanthroline and 2,2?-bipyridine in aqueous, anionic, cationic and nonionic surfactants solutions. Reaction Kinetics, Mechanisms and Catalysis 2017, 122, 729 -740.
AMA StyleJoanna Drzeżdżon, Agnieszka Piotrowska, Dariusz Wyrzykowski, Aleksandra Tesmar, Lech Chmurzyński, Dagmara Jacewicz. Kinetics and thermodynamics of the reaction of iminodiacetate copper(II) complexes with 1,10-phenanthroline and 2,2?-bipyridine in aqueous, anionic, cationic and nonionic surfactants solutions. Reaction Kinetics, Mechanisms and Catalysis. 2017; 122 (2):729-740.
Chicago/Turabian StyleJoanna Drzeżdżon; Agnieszka Piotrowska; Dariusz Wyrzykowski; Aleksandra Tesmar; Lech Chmurzyński; Dagmara Jacewicz. 2017. "Kinetics and thermodynamics of the reaction of iminodiacetate copper(II) complexes with 1,10-phenanthroline and 2,2?-bipyridine in aqueous, anionic, cationic and nonionic surfactants solutions." Reaction Kinetics, Mechanisms and Catalysis 122, no. 2: 729-740.
We have proposed a new method which can be applied in assessing the intracellular production of hydrogen peroxide. Using this assay we have examined the hydrogen peroxide generation during the L-glutamate induced oxidative stress in the HT22 hippocampal cells. The detection of hydrogen peroxide is based on two crucial reagents cis-[Cr(C2O4)(pm)(OH2)2]+ (pm denotes pyridoxamine) and 2-ketobutyrate. The results obtained indicate that the presented method can be a promising tool to detect hydrogen peroxide in biological samples, particularly in cellular experimental models.
Dagmara Jacewicz; Kamila Siedlecka-Kroplewska; Joanna Drzeżdżon; Agnieszka Piotrowska-Kirschling; Dariusz Wyrzykowski; Aleksandra Tesmar; Krzysztof Żamojć; Lech Chmurzyński. Method for detection of hydrogen peroxide in HT22 cells. Scientific Reports 2017, 7, srep45673 .
AMA StyleDagmara Jacewicz, Kamila Siedlecka-Kroplewska, Joanna Drzeżdżon, Agnieszka Piotrowska-Kirschling, Dariusz Wyrzykowski, Aleksandra Tesmar, Krzysztof Żamojć, Lech Chmurzyński. Method for detection of hydrogen peroxide in HT22 cells. Scientific Reports. 2017; 7 (1):srep45673.
Chicago/Turabian StyleDagmara Jacewicz; Kamila Siedlecka-Kroplewska; Joanna Drzeżdżon; Agnieszka Piotrowska-Kirschling; Dariusz Wyrzykowski; Aleksandra Tesmar; Krzysztof Żamojć; Lech Chmurzyński. 2017. "Method for detection of hydrogen peroxide in HT22 cells." Scientific Reports 7, no. 1: srep45673.