Download or read book Preparation and Characterization of Formaldehyde Free Wood Adhesives from Oil Palm Elaeis guineensis Fronds Lignin Penerbit USM written by Mohd. Hazwan Hussin and published by Penerbit USM. This book was released on with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phenol formaldehyde (PF) is one of the widely used wood adhesives in the wood industry. The raw materials in the production of phenol formaldehyde resin are petroleum-derived and formaldehyde-based materials which corresponds to public health issues, environmental problems and non-economical costing. In recent years, the increasing price of petrochemical due to energy shortage and environmental problems such as global warming and climate change as results from the burning of fossil fuels have been brought to great public attention. Public health issues related to the emission of formaldehyde-based adhesives in most buildings and constructions, have also been given notice. Thus, lignin phenol glyoxal (LPG) wood adhesives have been formulated by partially replacing phenol with Kraft and organosolv lignins at varying weight percentages. Results showed that 50 % organosolv LPG (OLPG) resin may cure as a stronger, natural, green, cost-effective and sustainable wood adhesive to replace PF resin in the wood industry.

Download or read book Preparation and Characterization of Formaldehyde free Wood Adhesives from Oil Palm Elaeis Guineensis Fronds Lignin written by Mohd. Hazwan Hussin and published by . This book was released on 2020 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Preparation and Characterization of Formaldehyde Free Wood Adhesives Lignin Extracted from Oil Palm Empty Fruit Bunch written by Abbas Hasan Faris and published by . This book was released on 2015 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bio based Wood Adhesives written by Zhongqi He and published by CRC Press. This book was released on 2017-05-25 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Sustainability of Polymeric Materials written by Valentina Marturano and published by Walter de Gruyter GmbH & Co KG. This book was released on 2020-08-10 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will provide a comprehensive overview on the green approach to the research and industrialization of plastic materials. An effort will be made to offer to the reader a critical perspective concerning both oil-based plastics and novel bio-based and waste-derived polymer formulations. A special focus on bio-innovation in the area of organic materials will also be delivered.

Download or read book Green Polymer Composites Technology written by Inamuddin and published by CRC Press. This book was released on 2016-11-03 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive introduction to "green" or environmentally friendly polymer composites developed using renewable polymers of natural origin such as starch, lignin, cellulose acetate, poly-lactic acid (PLA), polyhydroxylalkanoates (PHA), polyhydroxylbutyrate (PHB), etc., and the development of modern technologies for preparing green composites with various applications. The book also discusses major applications of green polymer composites in industries such as medicine, biotechnology, fine chemicals and engineering.

Download or read book Formaldehyde free Wood Adhesives from Soybean Protein and Lignin written by Yuan Liu and published by . This book was released on 2005 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Biobased Adhesives written by Manfred Dunky and published by John Wiley & Sons. This book was released on 2023-05-31 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biobased Adhesives Unique and comprehensive book edited by acknowledged leaders on biobased adhesives that will replace petroleum-based adhesives. This book contains 23 chapters covering the various ramifications of biobased adhesives. The chapters are written by world-class scientists and technologists actively involved in the arena of biobased adhesives. The book is divided into three parts: Part 1: Fundamental Aspects; Part 2: Classes of Biobased Adhesives; and Part 3: Applications of Biobased Adhesives. Topics covered include: an introduction to biobased adhesives; adhesion theories and adhesion and surface issues with biobased adhesives; chemistry of adhesives; biorefinery products as biobased raw materials for adhesives; naturally aldehyde-based thermosetting resins; natural crosslinkers; curing and adhesive bond strength development in biobased adhesives; mimicking nature; bio-inspired adhesives; protein adhesives; carbohydrates as adhesives; natural polymer-based adhesives; epoxy adhesives from natural materials; biobased polyurethane adhesives; nanocellulose-modified adhesives; debondable, recyclable, and biodegradable biobased adhesives; 5-Hydroxymethylfurfural-based adhesives; adhesive precursors from tree-derived naval stores; and applications in various diverse arenas such as wood bonding, controlled drug delivery, and wearable bioelectronics. Audience This book will interest materials scientists, adhesionists, polymer chemists, marine biologists, food and agriculture scientists, and environmentalists. R&D personnel in a slew of wide-ranging industries such as aviation, shipbuilding, railway, automotive, packaging, construction, wood bonding, and composites should find this book a repository of current and much-needed information.

Download or read book Wood Adhesives written by A. Pizzi and published by Routledge. This book was released on 2018-10-08 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: The perfect companion to the highly acclaimed Volume 1 of Wood Adhesives,Volume 2 presents stimulating discussions on technically and economically importantadhesives for wood bonding-covering their preparation and formulation, as well astechniques and suggestions for their application.Like its companion book, Wood Adhesives, Volume 2 provides up-to-date informationand analysis of new technologies and recent breakthroughs ... gives insightinto the relationship between adhesive chemistry and technical application . . . anddiscusses present and future trends likely to have considerable impact on the field.Elaborating upon general overviews presented in Volume 1, Wood Adhesives,Volume 2 includes a chapter on protein adhesives ... fills the gap on the chemistryof polyvinyl acetate wood adhesives ... contains a detailed discussion of formaldehydeemission ... and much more.A complementary and much needed follow-up to Volume 1, Wood Adhesives,Volume 2 is essential reading for wood technologists; adhesives and physicalchemists; forest products researchers; polymer scientists; chemical, mechanical, process,and civil engineers who must choose and apply wood adhesives; and advancedundergraduate and graduate students in the above disciplines.

Download or read book Eco Friendly Adhesives for Wood and Natural Fiber Composites written by Mohammad Jawaid and published by Springer Nature. This book was released on 2021-01-21 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of eco-friendly resins and their composite materials covering their synthesis, sources, structures and properties for different industrial applications to support the ongoing research and development in eco-friendly and renewable commercial products. It provides comparative discussions on the properties of eco-friendly resins with other polymer composites. It is a useful reference on bio-based eco-friendly polymer resins, wood-based composites, natural fibers and biomass materials for the polymer scientists, engineers and material scientists.

Download or read book Formulation and Characterization of Lignin Phenol Formaldehyde Resins for Plywood written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Design Synthesis and Characterization of Environmentally Friendly Wood Adhesives written by Richard Conrad Cook and published by . This book was released on 2001 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Characterization of Phenol formaldehyde Resin Adhesive as Related to Effectiveness in Wood Adhesion written by Chung-Yun Hse and published by . This book was released on 1973 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development and Characterization of New Formaldehyde free Soy Flour based Adhesives for Making Interior Plywood written by Jian Huang and published by . This book was released on 2007 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Formaldehyde-based adhesives such as urea-formaldehyde (UF) and phenol-formaldehyde (PF) adhesives dominate the current wood adhesive market. However, these adhesives are derived from petrochemicals and carcinogenic formaldehyde. In this study, we developed two formaldehyde-free adhesives based on abundant, renewable, and inexpensive soy flour (SF). The first adhesive was mainly composed of SF, polyethylenimine (PEI), and maleic anhydride (MA). The optimum formulation of this adhesive and the optimum hot-press conditions for making plywood were investigated. A three-cycle soak test and a boiling water test (BWT) were employed to evaluate the strength and water-resistance of plywood bonded with the soy flour-based adhesive. Results showed that SF, PEI, MA and NaOH were all essential components for the adhesive and the SF/PEI/MA weight ratio of 7/1.0/0.32 resulted in the highest water-resistance. When the hot-press temperature was in the range of 140-170 ° C, both the water-resistance and the shear strengths of plywood bonded with the adhesive remained statistically the same, except that the dry shear strength of plywood at 170°C was statistically lower than that at 160 o.C. When the hot-press time ranged from 2 to 6 min at 160°C, the plywood panels made at the hot-press time of 5 min led to the highest boiling water test/wet (BWT/w) shear strength among all samples, and the plywood panel made at the hot-press time of 5 min had a higher dry shear strength than that at 3 min. Plywood panels bonded with this SF/PEI/MA adhesive exceeded the water-resistance requirements for interior applications. The second adhesive consisted of SF, trimethylolpropane triglycidyl ether (TMTE) and a catalyst. The following catalysts were investigated: calcium hydroxide, sodium carbonate, triethylamine, tetra-n-octylammonium bromide, phosphoric acid and ammonium sulfate. The effects of these catalysts on the water-resistance of plywood bonded with the SF-TMTE adhesive under different hot-press conditions were investigated. It was found that all catalysts improved the water-resistance of the resulting plywood to some extent. Among all catalysts investigated, calcium hydroxide and triethylamine were better than other catalysts in terms of improving the water-resistance of the resulting plywood panels. These preliminary results also revealed that increasing hot-press temperature and increasing hot-press time enhanced the water-resistance. The water-resistance of plywood panels bonded with these SF-TMTE adhesives still could not meet water-resistance requirements for interior applications.

Download or read book Lignocellulose for Future Bioeconomy written by Hidayah Ariffin and published by Elsevier. This book was released on 2019-04-20 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lignocellulose for Future Bioeconomy discusses the conversion and utilization of lignocellulosic biomass. This book focuses on the utilization of lignocelluloses for various products, including biopolymers, bionanomaterials and bioproducts. Recent findings in scientific investigation, engineering, product development, economic and lifecycle analysis are discussed, as are current synthesis technologies and potential applications. The book progresses from a discussion of the potential sources of biomass, to the refinement and processing of materials. A sampling of various sustainability issues faced by industries in their production methods and a look at real world examples of the use of lignocellulose-based materials in the bioeconomy round out the discussion. Presents information on lignocellulosic biomass management and its utilization for the production of bioproducts, biopolymers and bionanomaterials Highlights the applications of advanced materials developed from lignocellulosic biomass and their contribution towards future bioeconomy Discusses the lifecycle of lignocellulosic biomass

Download or read book Forest Products and Wood Science written by Rubin Shmulsky and published by John Wiley & Sons. This book was released on 2019-03-11 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: The updated seventh edition of the classic text on wood science and forestry The seventh edition of Forest Products and Wood Science: An Introduction offers a fully revised and updated review of the forest products industry. This classic text contains a comprehensive review of the subject and presents a thorough understanding of the anatomical and physical nature of wood. The authors emphasize its use as an industrial raw material. Forest Products and Wood Science provides thorough coverage of all aspects of wood science and industry, ranging from tree growth and wood anatomy to a variety of economically important wood products, along with their applications and performance. The text explores global raw materials, the increasing use of wood as a source of energy and chemicals and environmental implications of the use of wood. This edition features new material on structural composites, non-structural composites, durability and protection, pulp and paper, energy and chemicals, and global raw materials. This seventh edition of the classic work: Contains new information on a variety of topics including: structural composites, non-structural composites, durability and protection, pulp and paper, energy and chemicals and global raw materials Includes a fully revised text that meets the changing needs of the forestry, engineering, and wood science academics and professionals Presents material written by authors with broad experience in both the private and academic sectors Written for undergraduate students in forestry, natural resources, engineering, and wood science, as well as forest industry personnel, engineers, wood-based manufacturing and using professionals, the seventh edition of Forest Products and Wood Science updates the classic text that has become an indispensable resource.

Download or read book Lignocellulosic Fibre and Biomass Based Composite Materials written by Mohammad Jawaid and published by Woodhead Publishing. This book was released on 2017-06-03 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lignocellulosic Fibre and Biomass-Based Composite Materials reviews the development, characterization and applications of composite materials developed from the effective use of lignocellulosic fibre and biomass. The book gathers together a wide spectrum of cutting-edge research on biomass fillers and reinforcements used for the fabrication and synthesis of composites. The book takes a systematic approach, investigating processing, design, characterization and applications of biocomposites, in order to establish their important relationship as a general guideline for end-user applications. Beginning with an introduction to biomass and its composites, a team of leading experts in the field cover rice husk, kenaf, oil palm, alfa and doum fibres, bamboo, cork, and many other materials, considering a range of applications, along with key issues such as performance and sustainability. The groundbreaking research presented opens the door to obtaining advanced material characteristics and significant enhancements in physical, mechanical, and thermal properties. This will be become an extremely useful reference and technical guide for academic and industrial researchers in composite materials, as well as for advanced students and industrialists working in material commercialization. Gathers together a wide spectrum of research on lignocellulosic fiber and biomass fillers and reinforcements used for the fabrication and synthesis of composites Presents multidisciplinary work in relation to materials engineering, polymer chemistry and physics, materials processing, organic synthesis and industrial design and applications Demonstrates systematic approaches and investigations from processing, design, characterization and applications of biocomposites