Development and Characterization of Soy Protein Isolate Adhesive
| Author | : Damon Brice Armitage |
| Publisher | : |
| Total Pages | : 168 |
| Release | : 2001 |
| Genre | : Soy isolate fiber |
| ISBN | : |
Development And Characterization Of Soy Protein Isolate Adhesive
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Formaldehyde-free Wood Adhesives from Soybean Protein and Lignin
| Author | : Yuan Liu |
| Publisher | : |
| Total Pages | : 250 |
| Release | : 2005 |
| Genre | : Adhesives |
| ISBN | : |
Presently, the production of wood composites relies on the formaldehyde-based wood adhesives such as phenol-formaldehyde (PF) and urea-formaldehyde (UF). However, their dependence on exhaustible fossil fuels and the emission of carcinogenic formaldehyde prompt to develop an environmentally friendly adhesive from renewable natural resources. This work focuses on development and characterization of forma1dehydefree wood adhesives from renewable soybean protein and lignin. Soybean protein is an abundant, inexpensive, and readily available natural product. Soybean protein-based adhesives were widely used as wood adhesives in 1930s-1960s and are completely replaced by synthetic formaldehyde-based adhesives today because wood composites bonded with soybean protein-based adhesives have relatively lower strength and lower water resistance than those bonded with formaldehyde-based adhesives. Marine adhesive protein from mussels is a strong and water-resistant adhesive. However, the production of marine adhesive protein is difficult and costly. The marine adhesive protein contains three key functional groups: a catechol moiety, a primary amino group, and a mercapto group. In this research, soybean protein was modified using marine adhesive protein as a model. We found that imparting soybean protein with one of the three key functional groups found in the marine adhesive protein converted soybean protein into a strong and water-resistant wood adhesive. Another formaldehyde-free new wood adhesive was also developed through modification of soybean protein with maleic anhydride followed by mixing with polyethylenimine (PEI). Wood composites bonded with this new adhesive were very strong and very water-resistant. The reaction mechanisms in the modification of soybean protein with maleic anhydride and the curing mechanisms of the adhesive were investigated in detail. Demethylated kraft lignin (DKL) has a high amount of the same key functional group, catechol moiety, as the marine adhesive protein. We found that a combination of DKL and PEI (a polyamine with abundant primary amino groups) was a strong and water-resistant wood adhesive. It was found that the curing mechanism of the DKL-PEI adhesive is similar to that of marine adhesive protein. The effects of DKL/PEI weight ratio, hot-press conditions and the molecular weight of PEI on adhesive performance were also investigated in detail.
Progress in Adhesion and Adhesives, Volume 6
| Author | : K. L. Mittal |
| Publisher | : John Wiley & Sons |
| Total Pages | : 914 |
| Release | : 2021-08-24 |
| Genre | : Technology & Engineering |
| ISBN | : 111984665X |
With the voluminous research being published, it is difficult, if not impossible, to stay abreast of current developments in a given area. The review articles in this book consolidate information to provide an alternative way to follow the latest research activity and developments in adhesion science and adhesives. With the ever-increasing amount of research being published, it is a Herculean task to be fully conversant with the latest research developments in any field, and the arena of adhesion and adhesives is no exception. Thus, topical review articles provide an alternate and very efficient way to stay abreast of the state-of-the-art in many subjects representing the field of adhesion science and adhesives. The 19 chapters in this Volume 6 follow the same order as the review articles originally published in RAA in the year 2020 and up to June 2021. The subjects of these 19 chapters fall in the following areas: Adhesives and adhesive joints Contact angle Reinforced polymer composites Bioadhesives Icephobic coatings Adhesives based on natural resources Polymer surface modification Superhydrophobic surfaces The topics covered include: hot-melt adhesives; adhesively-bonded spar-wingskin joints; contact angle hysteresis; fiber/matrix adhesion in reinforced thermoplastic composites; bioadhesives in biomedical applications; mucoadhesive pellets for drug delivery applications; bio-inspired icephobic coatings; wood adhesives based on natural resources; adhesion in biocomposites; vacuum UV surface photo-oxidation of polymers and other materials; vitrimers and their relevance to adhesives; superhydrophobic surfaces by microtexturing; structural acrylic adhesives; mechanically durable water-repellent surfaces; mussel-inspired underwater adhesives; and cold atmospheric pressure plasma technology for modifying polymers. Audience This book will be valuable and useful to researchers and technologists in materials science, nanotechnology, physics, surface and colloid chemistry in multiple disciplines in academia, industry, various research institutes and other organizations.
Bio-based Wood Adhesives
| Author | : Zhongqi He |
| Publisher | : CRC Press |
| Total Pages | : 366 |
| Release | : 2017-05-25 |
| Genre | : Science |
| ISBN | : 1498740758 |
Adhesive bonding plays an increasing role in the forest product industry and is a key factor for efficiently utilizing timber and other lignocellulosic resources. As synthetic wood adhesives are mostly derived from depleting petrochemical resources and have caused increasing environmental concern, natural product and byproduct-derived adhesives have attracted much attention in the last decades. Although adhesives made from plant and animal sources have been in existence since ancient times, increased knowledge of their chemistry and improved technical formulation of their preparation are still needed to promote their broader industrial applications. The primary goals of this book are to (1) synthesize the fundamental knowledge and latest research on bio-based adhesives from a remarkable range of natural products and byproducts, (2) identify need areas and provide directions of future bio-based adhesive research, and (3) help integrating research findings in practical adhesive application for maximal benefits. This book covers information on a variety of natural products and byproducts and the latest research on formulation, testing and improvement of the relevant adhesives in fifteen chapters written by an international group of accomplished contributors. This book will serve as a valuable reference source for university faculty, graduate students, research scientists, agricultural and wood engineers, international organization advocators and government agency regulators who work and deal with enhanced utilization of agricultural and forest products and byproducts.
Soy Protein-Based Blends, Composites and Nanocomposites
| Author | : Visakh P. M. |
| Publisher | : John Wiley & Sons |
| Total Pages | : 275 |
| Release | : 2017-08-17 |
| Genre | : Technology & Engineering |
| ISBN | : 1119419034 |
This unique book will enable engineers and natural-based polymer scientists to achieve multi-functionality in products using soy protein and various nano- and micro-sized biobased materials and reinforcements. Many of the recent research accomplishments in the area of soy-based blends, composites and bionanocomposites are presented in this book. In addition to introducing soy protein and its structure and relationship properties, the book covers many other relevant topics such as the state-of-the-art, new challenges, advances and opportunities in the field such as: biomedical applications of soy protein; electrospinning of soy protein nanofibers, their synthesis and applications; soy protein-based materials rheology; soy proteins as a potential source of active peptides of nutraceutical significance; soy protein isolate-based films; and use of soy protein-based carriers for encapsu??lating bioactive ingredients.
Biocomposites: Design and Mechanical Performance
| Author | : Manjusri Misra |
| Publisher | : Woodhead Publishing |
| Total Pages | : 524 |
| Release | : 2015-08-07 |
| Genre | : Technology & Engineering |
| ISBN | : 178242394X |
Biocomposites: Design and Mechanical Performance describes recent research on cost-effective ways to improve the mechanical toughness and durability of biocomposites, while also reducing their weight. Beginning with an introduction to commercially competitive natural fiber-based composites, chapters then move on to explore the mechanical properties of a wide range of biocomposite materials, including polylactic, polyethylene, polycarbonate, oil palm, natural fiber epoxy, polyhydroxyalkanoate, polyvinyl acetate, polyurethane, starch, flax, poly (propylene carbonate)-based biocomposites, and biocomposites from biodegradable polymer blends, natural fibers, and green plastics, giving the reader a deep understanding of the potential of these materials. - Describes recent research to improve the mechanical properties and performance of a wide range of biocomposite materials - Explores the mechanical properties of a wide range of biocomposite materials, including polylactic, polyethylene, polycarbonate, oil palm, natural fiber epoxy, polyhydroxyalkanoate, polyvinyl acetate, and polyurethane - Evaluates the potential of biocomposites as substitutes for petroleum-based plastics in industries such as packaging, electronic, automotive, aerospace and construction - Includes contributions from leading experts in this field
Advances in Wood Composites II
| Author | : Antonios N. Papadopoulos |
| Publisher | : MDPI |
| Total Pages | : 222 |
| Release | : 2020-11-09 |
| Genre | : Science |
| ISBN | : 3039435213 |
Wood composites have shown very good performance and substantial service lives when correctly specified for the exposure risks present. The selection of an appropriate product for the job should be accompanied by decisions about the appropriate protection, whether this is by design, by preservative treatment, or by wood modification techniques. This Special Issue, “Advances in Wood Composites II”, presents recent progress in enhancing and refining the performance and properties of wood composites by chemical and thermal modification and the application of smart nanomaterials. Such enhancements and refinements have made wood composites a particular area of interest for researchers. In addition, this Special Issue reviews some important aspects in the field of wood composites, with particular focus on their materials, applications, and engineering and scientific advances, including solutions inspired biomimetically by the structure of wood and wood composites. This Special Issue, as a collection of 14 original contributions, provides selected examples of recent advances in wood composites.
Soy Protein-Based Blends, Composites and Nanocomposites
| Author | : Visakh P. M. |
| Publisher | : John Wiley & Sons |
| Total Pages | : 244 |
| Release | : 2017-08-15 |
| Genre | : Technology & Engineering |
| ISBN | : 1119419026 |
This unique book will enable engineers and natural-based polymer scientists to achieve multi-functionality in products using soy protein and various nano- and micro-sized biobased materials and reinforcements. Many of the recent research accomplishments in the area of soy-based blends, composites and bionanocomposites are presented in this book. In addition to introducing soy protein and its structure and relationship properties, the book covers many other relevant topics such as the state-of-the-art, new challenges, advances and opportunities in the field such as: biomedical applications of soy protein; electrospinning of soy protein nanofibers, their synthesis and applications; soy protein-based materials rheology; soy proteins as a potential source of active peptides of nutraceutical significance; soy protein isolate-based films; and use of soy protein-based carriers for encapsu??lating bioactive ingredients.
Development and Characterization of Whey Protein-based Environmentally Safe Wood Adhesives
| Author | : Wenbo Wang |
| Publisher | : |
| Total Pages | : 368 |
| Release | : 2013 |
| Genre | : |
| ISBN | : |
The effects of ammonia/sulfite mole ratio, amount of the formaldehyde scavenger combination and PFO levels on bonding performances and formaldehyde emission were evaluated. Plywood evaluations indicated that the most preferable whey protein-based adhesive modified by 30% PFO with ammonia/sulfite mole ratio of 4:3 and 19% stoichiometric excesses of the combination had a dry bond strength of 1.98 MPa, a wet-state strength of 1.73 MPa comparable to those of phenol-formaldehyde (PF) resins and very low formaldehyde emission (0.0067 mg/L) which was much lower than that of PF resins. Findings from this study demonstrated that whey protein-based adhesives may be considered as an environmentally safe alternative to petroleum-based wood adhesives on the market with proper formulations according to the requirements of target wood composite products.
Handbook of Biopolymers
| Author | : Sabu Thomas |
| Publisher | : Springer Nature |
| Total Pages | : 1535 |
| Release | : 2023-04-29 |
| Genre | : Technology & Engineering |
| ISBN | : 9811907102 |
This book on biopolymers offers a comprehensive source for biomaterial professionals. It covers all elementary topics related to the properties of biopolymers, the production, and processing of biopolymers, applications of biopolymers, examples of biopolymers, and the future of biopolymers. Edited by experts in the field, the book highlights international professionals’ longstanding experiences and addresses the requirements of practitioners and newcomers in this field in finding a solution to their problems. The book brings together several natural polymers, their extraction/production, and physio-chemical features. The topics covered in this book are biopolymers from renewable sources, marine prokaryotes, soy protein and humus oils, biopolymer recycling, chemical modifications, and specific properties. The book also focuses on the potential and diverse applications of biogenic and bio-derived polymers. The content includes industrial applications of natural polymeric molecules and applications in key areas such as material, biomedical, sensing, packaging, biomedicine, and biotechnology, and tissue engineering applications are discussed in detail. The objective of this book is to fill the gap between the researchers working in the laboratory to cutting-edge technological applications in related industries. This book will be a very valuable reference material for graduates and post-graduate students, academic researchers, professionals, research scholars, and scientists, and for anyone who has a flavor for doing biomaterial research. The books are designed to serve as a bridge between undergraduate textbooks in biochemistry and professional literature. The book provides universal perspectives for an emerging field where classical polymer science blends with molecular biology with highlights on recent advances.
