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Because of the advantages of using natural materials and industrial wastes in the development of new value-added materials, this paper presents an attempt to use some of these materials that are available in Brazil as additives to prepare wood-cement particleboards and describes the durability of the resulting products. These natural materials and industrial wastes include metakaolin and calcined ceramic residue, which were used as additives in wood-cement particleboards produced with wood residues (particles of Pinus spp.). Panels made of cement and Pinus wood particles with the addition of either of two pozzolanas – 30% metakaolin (MK) or 50% calcined ceramic residues (CC) – were prepared by compression molding and were characterized. The amount of Ca(OH)2 or CH was determined based on theoretical considerations of the hydration reactions of the Portland cement used. The properties determined included the pozzolana activity index (PAI), modulus of elasticity and rupture after 28 and 91 days of curing and also after natural and artificial aging to assess the particleboards’ durability. The results revealed that both reference panels and those produced with pozzolanas presented significant losses of their physical and mechanical characteristics over time and due to accelerated aging. Morphological studies supported these observations.
Adauto José Miranda de Lima; Setsuo Iwakiri; Kestur G. Satyanarayana; María Guadalupe Lomelí-Ramírez. Preparation and characterization of wood-cement particleboards produced using metakaolin, calcined ceramics and residues of Pinus spp. Journal of Building Engineering 2020, 32, 101722 .
AMA StyleAdauto José Miranda de Lima, Setsuo Iwakiri, Kestur G. Satyanarayana, María Guadalupe Lomelí-Ramírez. Preparation and characterization of wood-cement particleboards produced using metakaolin, calcined ceramics and residues of Pinus spp. Journal of Building Engineering. 2020; 32 ():101722.
Chicago/Turabian StyleAdauto José Miranda de Lima; Setsuo Iwakiri; Kestur G. Satyanarayana; María Guadalupe Lomelí-Ramírez. 2020. "Preparation and characterization of wood-cement particleboards produced using metakaolin, calcined ceramics and residues of Pinus spp." Journal of Building Engineering 32, no. : 101722.
Natural lignocellulosic fibers and corresponding fabrics have been gaining notoriety in recent decades as reinforcement options for polymer matrices associated with industrially applied composites. These natural fibers and fabrics exhibit competitive properties when compared with some synthetics such as glass fiber. In particular, the use of fabrics made from natural fibers might be considered a more efficient alternative, since they provide multidirectional reinforcement and allow the introduction of a larger volume fraction of fibers in the composite. In this context, it is important to understand the mechanical performance of natural fabric composites as a basic condition to ensure efficient engineering applications. Therefore, it is also important to recognize that ramie fiber exhibiting superior strength can be woven into fabric, but is the least investigated as reinforcement in strong, tough polymers to obtain tougher polymeric composites. Accordingly, this paper presents the preparation of epoxy composite containing 30 vol.% Boehmeria nivea fabric by vacuum-assisted resin infusion molding technique and mechanical behavior characterization of the prepared composite. Obtained results are explained based on the fractography studies of tested samples.
Fabio Da Costa Garcia Filho; Fernanda Santos Da Luz; Lucio Fabio Cassiano Nascimento; Kestur Gundappa Satyanarayana; Jaroslaw Wieslaw Drelich; Sergio Neves Monteiro. Mechanical Properties of Boehmeria nivea Natural Fabric Reinforced Epoxy Matrix Composite Prepared by Vacuum-Assisted Resin Infusion Molding. Polymers 2020, 12, 1311 .
AMA StyleFabio Da Costa Garcia Filho, Fernanda Santos Da Luz, Lucio Fabio Cassiano Nascimento, Kestur Gundappa Satyanarayana, Jaroslaw Wieslaw Drelich, Sergio Neves Monteiro. Mechanical Properties of Boehmeria nivea Natural Fabric Reinforced Epoxy Matrix Composite Prepared by Vacuum-Assisted Resin Infusion Molding. Polymers. 2020; 12 (6):1311.
Chicago/Turabian StyleFabio Da Costa Garcia Filho; Fernanda Santos Da Luz; Lucio Fabio Cassiano Nascimento; Kestur Gundappa Satyanarayana; Jaroslaw Wieslaw Drelich; Sergio Neves Monteiro. 2020. "Mechanical Properties of Boehmeria nivea Natural Fabric Reinforced Epoxy Matrix Composite Prepared by Vacuum-Assisted Resin Infusion Molding." Polymers 12, no. 6: 1311.
Considering that the solid wood, being a heterogeneous and anisotropic product, presents several disadvantages such as unsatisfactory mechanical properties for certain uses and limitations of wood due to dimensions of wood pieces, reconstituted wood products have been developed by gluing of veener, boards, lignocellulosic fibers, etc., which are joined using adhesives. It should be noted that changes in adhesion to wood are desirable in terms of performance improvement and adhesive economy. Within the constant search for better performance of adhesives, the use of nanocelluloses appears as a viable option. Further, identification of reinforcement of adhesives with nanocellulose is being considered as an opportunity among the several opportunities offered by nanotechnology for the forest products industry. Use of nanocelluloses as reinforcements in adhesives for the production of reconstituted wood panels has several benefits such as possibility of altering the properties of adhesives, gain in mechanical and physical properties of panels and reduction in formaldehyde emissions by panels using synthetic adhesives. Accordingly, this chapter discusses the main types of reconstituted wood panels, types and characteristics of the adhesives employed, aspects that influence the bonding and use of additives in the glue mixture. Besides, it also addresses the use of nanocellulose and its effects on the properties of reconstituted wood panels. Despite all the advantages emntioned above, the Chapter ends with the conclusion that there are still some problems to be looked into suggesting need for more research either in the application of nanocellulose and its modification in different types of resin, as well as application technologies appropriate to the new conditions of the adhesives.
Elaine Cristina Lengowski; Eraldo Antonio Bonfatti Júnior; Marina Mieko Nishidate Kumode; Mayara Elita Carneiro; Kestur Gundappa Satyanarayana. Nanocellulose-Reinforced Adhesives for Wood-Based Panels. Sustainable Polymer Composites and Nanocomposites 2019, 1001 -1025.
AMA StyleElaine Cristina Lengowski, Eraldo Antonio Bonfatti Júnior, Marina Mieko Nishidate Kumode, Mayara Elita Carneiro, Kestur Gundappa Satyanarayana. Nanocellulose-Reinforced Adhesives for Wood-Based Panels. Sustainable Polymer Composites and Nanocomposites. 2019; ():1001-1025.
Chicago/Turabian StyleElaine Cristina Lengowski; Eraldo Antonio Bonfatti Júnior; Marina Mieko Nishidate Kumode; Mayara Elita Carneiro; Kestur Gundappa Satyanarayana. 2019. "Nanocellulose-Reinforced Adhesives for Wood-Based Panels." Sustainable Polymer Composites and Nanocomposites , no. : 1001-1025.
In recent times, nanotechnology, which has been one of the main novelties to be developed in the 21st century, has been applied to many sectors, particularly to various industrial sectors including forest-based industry. An output of this is the development of nanomaterials of which nanocelluloses have been studied as high technology biopolymers for application in various materials through the development of films and as reinforcement in papers. With this background, the main objective of this Chapter is to present the use of nanocellulose in the paper making. Accordingly, the Chapter presents characteristics of the most used wood in the world for pulp and paper production, main methods of obtaining cellulose in nature, process of bleaching of pulp, paper making, processes to obtain different types of nanocellulose (microfibrillar nanofiber and cellulose nanocrystals), applications of nanocellulose in the paper making through coating and films as well as by nanocellulose-reinforced pulp and the resulting effects of the use of nanocellulose in paper production. These include increased tensile and burst strengths, weight loss, improved barrier properties for oils, oxygen and moisture, better printing surface, etc. In the end, marketing aspects, possible future opportunities and finally concluding remarks are given. These briefly mention the use of nanocelluloses in papermaking presenting interesting possibilities, which offer improvements in cost-benefit, energy efficiency and biocompatibility, in addition to generating new products with uses are not available today.
Elaine Cristina Lengowski; Eraldo Antonio Bonfatti Júnior; Marina Mieko Nishidate Kumode; Mayara Elita Carneiro; Kestur Gundappa Satyanarayana. Nanocellulose in the Paper Making. Sustainable Polymer Composites and Nanocomposites 2019, 1027 -1066.
AMA StyleElaine Cristina Lengowski, Eraldo Antonio Bonfatti Júnior, Marina Mieko Nishidate Kumode, Mayara Elita Carneiro, Kestur Gundappa Satyanarayana. Nanocellulose in the Paper Making. Sustainable Polymer Composites and Nanocomposites. 2019; ():1027-1066.
Chicago/Turabian StyleElaine Cristina Lengowski; Eraldo Antonio Bonfatti Júnior; Marina Mieko Nishidate Kumode; Mayara Elita Carneiro; Kestur Gundappa Satyanarayana. 2019. "Nanocellulose in the Paper Making." Sustainable Polymer Composites and Nanocomposites , no. : 1027-1066.
Growing environmental concerns in recent years have led to finding new resources to replace the synthetic materials such as glass and carbon fibers in the development of polymeric and cementitious matrices-based composites. One such material is lignocellulosic fibers, due to their inherent characteristics such as abundant availability and renewability, low weight, biodegradability, interesting specific properties, etc. Studies have been carried out throughout the world in the utilization of these fibers particularly in the development of light weight, but high-performance composites. Some of their products are already in use in many applications. Although these fibers have been used even in sculptures or in arts in general, there is no report on the characteristics required for such applications. This chapter focuses on the exploration of these aspects particularly about the appearance of some plant fibers as well as their texture and potential use in polymeric sculptures or in arts. While doing so, the chapter will also present availability, methodologies used for the characterization as well as the reported properties (chemical, physical, mechanical thermal, electrical, environmental, and moisture absorption) of various Brazilian-based lignocellulosic fibers. It is hoped this will be applicable to fibers from other parts of the world to open up new areas of their utilization in a scientific manner enabling new value-added application for these agro-industrial byproducts, which may otherwise go waste.
Kestur G. Satyanarayana; Thais H. S. Flores-Sahagun; Pamela Bowman. Lignocellulosic Materials of Brazil––Their Characterization and Applications in Polymer Composites and Art Works. Smart Polymer Nanocomposites 2017, 1 -96.
AMA StyleKestur G. Satyanarayana, Thais H. S. Flores-Sahagun, Pamela Bowman. Lignocellulosic Materials of Brazil––Their Characterization and Applications in Polymer Composites and Art Works. Smart Polymer Nanocomposites. 2017; ():1-96.
Chicago/Turabian StyleKestur G. Satyanarayana; Thais H. S. Flores-Sahagun; Pamela Bowman. 2017. "Lignocellulosic Materials of Brazil––Their Characterization and Applications in Polymer Composites and Art Works." Smart Polymer Nanocomposites , no. : 1-96.
Marina Mieko Nishidate Kumode; Graciela I. Muniz Bolzon; Washington L.E. Magalhães; Satyanarayana G. Kestur. Microfibrillated nanocellulose from balsa tree as potential reinforcement in the preparation of ‘green’ composites with castor seed cake. Journal of Cleaner Production 2017, 149, 1157 -1163.
AMA StyleMarina Mieko Nishidate Kumode, Graciela I. Muniz Bolzon, Washington L.E. Magalhães, Satyanarayana G. Kestur. Microfibrillated nanocellulose from balsa tree as potential reinforcement in the preparation of ‘green’ composites with castor seed cake. Journal of Cleaner Production. 2017; 149 ():1157-1163.
Chicago/Turabian StyleMarina Mieko Nishidate Kumode; Graciela I. Muniz Bolzon; Washington L.E. Magalhães; Satyanarayana G. Kestur. 2017. "Microfibrillated nanocellulose from balsa tree as potential reinforcement in the preparation of ‘green’ composites with castor seed cake." Journal of Cleaner Production 149, no. : 1157-1163.
Continuous efforts are being made in some countries for the recovery of crude glycerin (RG/CG) and castor oil cake (COC), the two byproducts of biodiesel production. These are expected to help, not only in addressing environmental safety, but also in adding value to those byproducts, which otherwise may go to waste. Finding ways to utilize those byproducts underlines the main objective of this study. This paper presents the evaluation of (i) COC, glycerin and banana and sugarcane fibers for moisture content; (ii) COC for structural and thermal properties; and (iii) CG for its chemical characteristics. The possibility of using COC and CG with the selected fibers as reinforcement in the development of bio-composites is attempted through thermo-molding. Results revealed enhanced mechanical properties for these composites. The obtained results are discussed in terms of the observed morphology.
José Luis Guimarães; Ana Cristina Trindade Cursino; Cyro Ketzer Saul; Maria Rita Sierrakowski; Luiz Pereira Ramos; Kestur Gundappa Satyanarayana. Evaluation of Castor Oil Cake Starch and Recovered Glycerol and Development of “Green” Composites Based on Those with Plant Fibers. Materials 2016, 9, 76 .
AMA StyleJosé Luis Guimarães, Ana Cristina Trindade Cursino, Cyro Ketzer Saul, Maria Rita Sierrakowski, Luiz Pereira Ramos, Kestur Gundappa Satyanarayana. Evaluation of Castor Oil Cake Starch and Recovered Glycerol and Development of “Green” Composites Based on Those with Plant Fibers. Materials. 2016; 9 (2):76.
Chicago/Turabian StyleJosé Luis Guimarães; Ana Cristina Trindade Cursino; Cyro Ketzer Saul; Maria Rita Sierrakowski; Luiz Pereira Ramos; Kestur Gundappa Satyanarayana. 2016. "Evaluation of Castor Oil Cake Starch and Recovered Glycerol and Development of “Green” Composites Based on Those with Plant Fibers." Materials 9, no. 2: 76.
High consumption of dietary fibers in the diet is related to the reduction of the risk of non-transmitting of chronic diseases, prevention of the constipation etc. Rich diets in dietary fibers promote beneficial effects for the metabolism. Considering the above and recognizing the multifaceted advantages of nano materials, there have been many attempts in recent times to use the nano materials in the food sector including as food additive. However, whenever new product for human and animal consumption is developed, it has to be tested for their effectiveness regarding improvement in the health of consumers, safety aspects and side effects. However, before it is tried with human beings, normally such materials would be assessed through biological tests on a living organism to understand its effect on health condition of the consumer. Accordingly, based on the authors’ finding reported in a previous paper, this paper presents body weight, biochemical (glucose, cholesterol and lipid profile in blood, analysis of feces) and histological tests carried out with biomass based cellulose nano fibrils prepared by the authors for its possible use as food additive. Preliminary results of the study with mice have clearly brought out potential of these fibers for the said purpose.
Dayanne Regina Mendes Andrade; Márcia Helena Mendonça; Cristiane Vieira Helm; Washington L. E. Magalhães; Graciela Ines Bonzon de Muniz; Satyanarayana G. Kestur. Assessment of Nano Cellulose from Peach Palm Residue as Potential Food Additive: Part II: Preliminary Studies. Journal of Food Science and Technology 2014, 52, 5641 -5650.
AMA StyleDayanne Regina Mendes Andrade, Márcia Helena Mendonça, Cristiane Vieira Helm, Washington L. E. Magalhães, Graciela Ines Bonzon de Muniz, Satyanarayana G. Kestur. Assessment of Nano Cellulose from Peach Palm Residue as Potential Food Additive: Part II: Preliminary Studies. Journal of Food Science and Technology. 2014; 52 (9):5641-5650.
Chicago/Turabian StyleDayanne Regina Mendes Andrade; Márcia Helena Mendonça; Cristiane Vieira Helm; Washington L. E. Magalhães; Graciela Ines Bonzon de Muniz; Satyanarayana G. Kestur. 2014. "Assessment of Nano Cellulose from Peach Palm Residue as Potential Food Additive: Part II: Preliminary Studies." Journal of Food Science and Technology 52, no. 9: 5641-5650.
Development of any new material requires its complete characterization to find potential applications. In that direction, preparation of bio-composites of cassava starch containing up to 30 wt.% green coconut fibers from Brazil by thermal molding process was reported earlier. Their characterization regarding physical and tensile properties of both untreated and treated matrices and their composites were also reported. Structural studies through FTIR and XRD and thermal stability of the above mentioned composites are presented in this paper. FT-IR studies revealed decomposition of components in the matrix; the starch was neither chemically affected nor modified by either glycerol or the amount of fiber. XRD studies indicated increasing crystallinity of the composites with increasing amount of fiber content. Thermal studies through TGA/DTA showed improvement of thermal stability with increasing amount of fiber incorporation, while DMTA showed increasing storage modulus, higher glass transition temperature and lower damping with increasing fiber content. Improved interfacial bonding between the matrix and fibers could be the cause for the above results.
María Guadalupe Lomelí-Ramírez; Satyanarayana G. Kestur; Ricardo Manríquez-González; Setsuo Iwakiri; Graciela Bolzon de Muniz; Thais Sydenstricker Flores-Sahagun. Bio-composites of cassava starch-green coconut fiber: Part II—Structure and properties. Carbohydrate Polymers 2014, 102, 576 -583.
AMA StyleMaría Guadalupe Lomelí-Ramírez, Satyanarayana G. Kestur, Ricardo Manríquez-González, Setsuo Iwakiri, Graciela Bolzon de Muniz, Thais Sydenstricker Flores-Sahagun. Bio-composites of cassava starch-green coconut fiber: Part II—Structure and properties. Carbohydrate Polymers. 2014; 102 ():576-583.
Chicago/Turabian StyleMaría Guadalupe Lomelí-Ramírez; Satyanarayana G. Kestur; Ricardo Manríquez-González; Setsuo Iwakiri; Graciela Bolzon de Muniz; Thais Sydenstricker Flores-Sahagun. 2014. "Bio-composites of cassava starch-green coconut fiber: Part II—Structure and properties." Carbohydrate Polymers 102, no. : 576-583.