Download or read book Synthesis and Characterization of Novel Functional Lignins written by Jennifer Dietz and published by Apprimus Wissenschaftsverlag. This book was released on 2015-12-02 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents novel pathways for one step or two step modifications of different types of lignin without the need of any catalyst. Such novel functional lignins were characterized in detail and are now ready for their utilization in novel polymeric materials and thus for new applications. Hereby the value of lignin can be increased by offering novel strategies of incorporating lignins as building block into polyurethanes, but also various other polymer matrices are thinkable for future studies.
Download or read book Lignin and Lignans as Renewable Raw Materials written by Francisco G. Calvo-Flores and published by John Wiley & Sons. This book was released on 2015-08-11 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: As naturally occurring and abundant sources of non-fossil carbon, lignin and lignans offer exciting possibilities as a source of commercially valuable products, moving away from petrochemical-based feedstocks in favour of renewable raw materials. Lignin can be used directly in fields such as agriculture, livestock, soil rehabilitation, bioremediation and the polymer industry, or it can be chemically modified for the fabrication of specialty and high-value chemicals such as resins, adhesives, fuels and greases. Lignin and Lignans as Renewable Raw Materials presents a multidisciplinary overview of the state-of-the-art and future prospects of lignin and lignans. The book discusses the origin, structure, function and applications of both types of compounds, describing the main resources and values of these products as carbon raw materials. Topics covered include: • Structure and physicochemical properties • Lignin detection methods • Biosynthesis of lignin • Isolation methods • Characterization and modification of lignins • Applications of modified and unmodified lignins • Lignans: structure, chemical and biological properties • Future perspectives This book is a comprehensive resource for researchers, scientists and engineers in academia and industry working on new possibilities for the application of renewable raw materials. For more information on the Wiley Series in Renewable Resources, visit www.wiley.com/go/rrs
Download or read book Synthesis and Characterization of Copolymers from Lignin written by Hui Li and published by . This book was released on 2014 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Development of bio-based materials, especially from agricultural and forestry industrial byproduct streams, is urgent and necessary under the circumstances of sustainability and the environment. Industrial lignin is an underutilized biopolymer byproduct from both the pulping and cellulosic ethanol biorefinery industries with tremendous availability, showing potential as a substrate for producing biobased polyester materials because of its structure and abundance of hydroxyl functional groups. In this study, lignin based copolymeric elastomers were synthesized by simple one pot two step polycondensation of methanol soluble (MS) fractions of industrial lignins and a series hyperbranched prepolymers (HBP) with different branching and core structures using various multifunctional monomers. Specifically, three industrial lignins (Indulin AT Kraft softwood (IN), Protobind 1000 (PB), and corn stover (CS)) were first subjected to methanol fractionation and then to a detailed chemical and thermal characterization. Fractionation and characterization of three industrial lignins were carried out to provide a hard (or netpoint) segment substrate for the copolymer synthesis. Correlations between chemical and thermal properties were observed in terms of condensation index, hydroxyl group, and molar mass versus the glass transition temperature (Tg̳). A series of lignin-copolymers were prepared using the three different lignins and a HBP composed of triethanolamine (TEA, trifunctional) and adipic acid (AA, difunctional), A2B3) to evaluate the effects of lignin types and lignin contents. Tensile properties were dominated by HBP 45% lignin content while lignin dominated at 45% content. The copolymers Tg̳ increased with lignin content, while lignin type did not play a significant role. Thermally-stimulated dual shape memory effects (Ts̳-SME) of the copolymers were obtained and quantified by cyclic thermomechanical tests. All copolymers had shape fixity rate 95% and shape recovery >90% for all copolymers. The copolymer shape memory transition temperature (Tt̳r̳a̳n̳s̳) increased with lignin content and Tt̳r̳a̳n̳s̳ was 20°C higher than Tg̳. To obtain different HBP structure, a prepolymer was synthesized composing of long alkyl (C12) chain diacid (DDDA), TEA, and tris(hydroxymethyl)aminomethane (THAM, tetrafunctional), B3-A2-CB31). The C12 diacid contributed to a partially crystalline structure, while THAM contributed to more branching as well as forming stiff amide linkages in the prepolymer. Lignin-copolymers were synthesized with these prepolymers and PB lignin. Tensile properties were dominated by HBP 25% lignin content while lignin dominated 25% content. The Tg̳s of copolymers increased with lignin content. The lignin-copolymer with 30% lignin content demonstrated optimal mechanical properties (tensile strength 5.3 MPa, Young's modulus 8.9 MPa, strain at break 301%, and toughness 1.03 GPa). Good Ts̳-SME was obtained and could be tailored by lignin content and activation temperatures ranged between ambient and body temperature. Finally, in order to pursue higher biobased content in the lignin-copolymers, HBP were prepared from AA, Glycerol (Gly, trifunctional), and enhanced by additions of diisopropanolamine (DIPA, trifunctional), or THAM, B2B32-A2, B2B32-DB42- A2, and B2B32-CB13- A2) to form branched to hyper branched structures. The higher branching crosslinkers, DIPA and THAM, were shown to influence the chemical and thermal properties of the prepolymers. The highly biobased lignin-copolymers demonstrated good shape memory and elastic properties. Tt̳r̳a̳n̳s̳ could be tuned by variations of Gly, DIPA and THAM proportions for applications under different temperature circumstances. Different branching and core structures of prepolymers (soft segment) were shown to influence the properties prepolymers and corresponding lignin-copolymers. All the lignin-copolymers were shown to be elastomeric and possess great Ts̳-SME. The results demonstrated that properties of lignin-copolymers could be tuned through lignin type, lignin content, prepolymer structure, and monomer variations. This study demonstrated that lignin, a renewable byproduct, can be promisingly valorized to apply as a netpoint segment in biobased polymer systems with SME behavior. [Letters with double underscore are subscript.]
Download or read book Lignin written by Swati Sharma and published by Springer Nature. This book was released on 2020-04-13 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive overview on origin, structure, properties, modification strategies and applications of the biopolymer lignin. It is organized into four themed parts. The first part focuses on the analysis and characterization of the second most abundant biopolymer. The following part is devoted to the biological aspects of lignin such as biosynthesis and degradation. In the third part, chemical modification strategies and the preparation of composites as well as nano- and microparticles are discussed.The final part addresses the industrial application of lignin and its derivatives, as well as lignin materials. The usage for synthesis of biofuels, fine chemicals and in agriculture and food industry is covered. This book is a comprehensive source for researchers, scientists and engineers working in the field of biopolymers as well as renewable materials and sources.
Download or read book Lignin Chemistry written by Yuhe Liao and published by John Wiley & Sons. This book was released on 2024-05-31 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lignin Chemistry A thorough reference guide to Lignin Chemistry, from inherent structure revealing to transformation into chemicals, fuels, and materials Climate change, driven by rising greenhouse gas emissions, is the defining challenge of our time. Reducing our dependence on non-renewable resources such as fossil fuels will require alternative, more sustainable resources. Lignin, the only widely-occurring, renewable, aromatic bio-polymer in Nature, has a range of application potential in the production of chemicals, fuels, and other industrial materials. Lignin science has become one of the fastest-growing and most significant areas of sustainable chemistry in the world. Lignin Chemistry: Characterization, Isolation, and Valorization presents a systematic, multidisciplinary overview of this cutting-edge field and its current state of research. Beginning with a robust characterization of lignin, the book addresses the isolation and transformation of lignin, as well as the book inspires with a plethora of applications. The result is a critical resource for researchers and professionals in any area of academic or industry where renewable biomass, in particular lignin, has importance. Lignin Chemistry readers will find: Thermochemical and catalytic strategies for lignin conversion Detailed discussion of the valorization of lignin towards biopolymers, nanoparticles, carbon fibers and materials, and hydrogels An authorial team with immense and varied research experience Lignin Chemistry is ideal for chemical engineers, catalytic chemists, biochemists, material scientists, and analytical chemists in industry.
Download or read book Methods in Lignin Chemistry written by Stephen Y. Lin and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt: An up-to-date compilation of the theoretical background and practical procedures involved in lignin characterization. Whenever possible, the procedures are presented in sufficient detail to enable the reader to perform the analysis solely by following the step-by-step description. The advantages and limitations of individual methods are discussed and, more importantly, illustrated by typical analytical data in comparison to results obtained from other methods. This handbook serves the need of researchers and other professionals in academia, the pulp and paper industry as well as allied industries. It is equally useful for those with no previous experience in lignin or lignocellulosics.
Download or read book Handbook of Biomass Valorization for Industrial Applications written by Shahid ul-Islam and published by John Wiley & Sons. This book was released on 2022-01-05 with total page 555 pages. Available in PDF, EPUB and Kindle. Book excerpt: HANDBOOK of BIOMASS VALORIZATION for INDUSTRIAL APPLICATIONS The handbook provides a comprehensive view of cutting-edge research on biomass valorization, from advanced fabrication methodologies through useful derived materials, to current and potential application sectors. Industrial sectors, such as food, textiles, petrochemicals and pharmaceuticals, generate massive amounts of waste each year, the disposal of which has become a major issue worldwide. As a result, implementing a circular economy that employs sustainable practices in waste management is critical for any industry. Moreover, fossil fuels, which are the primary sources of fuel in the transportation sector, are also being rapidly depleted at an alarming rate. Therefore, to combat these global issues without increasing our carbon footprint, we must look for renewable resources to produce chemicals and biomaterials. In that context, agricultural waste materials are gaining popularity as cost-effective and abundantly available alternatives to fossil resources for the production of a variety of value-added products, including renewable fuels, fuel components, and fuel additives. Handbook of Biomass Valorization for Industrial Applications investigates current and emerging feedstocks, as well as provides in-depth technical information on advanced catalytic processes and technologies that enable the development of all possible alternative energy sources. The 22 chapters of this book comprehensively cover the valorization of agricultural wastes and their various uses in value-added applications like energy, biofuels, fertilizers, and wastewater treatment. Audience The book is intended for a very broad audience working in the fields of materials sciences, chemical engineering, nanotechnology, energy, environment, chemistry, etc. This book will be an invaluable reference source for the libraries in universities and industrial institutions, government and independent institutes, individual research groups, and scientists working in the field of valorization of biomass.
Download or read book Lignin written by Fachuang Lu, Ph.d and published by . This book was released on 2019-01-18 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lignin is the main natural resource of aromatic structures on Earth. With the depletion of fossil oil and increased environmental concerns, renewable resources for energy and chemical production have attracted tremendous attention from scientists and engineers. As a renewable aromatic polymer, lignin has been, for a long time, studied in terms of its biosynthesis, structures, reactivities and applications although few portions of lignins available from the industry, mainly pulping mills, have been utilized for various applications. The key for complete and efficient utilization of lignins is that all aspects, including lignin biosynthesis, structures, functionalities, and properties, about lignins should be understood. Another important attribute related to lignin utilization comes from analytical methods essential for our understanding of lignins and mechanisms involved in various processes. This book provides critical reviews and the latest research results relating to selected fields of lignin biosynthesis, functional characterization and applications.
Download or read book Lignin based Polyurethanes synthesis and Characterization written by Sook Fah Yap and published by . This book was released on 1993 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lignin based Materials for Biomedical Applications written by Patrícia Figueiredo and published by Elsevier. This book was released on 2021-07-26 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lignin-based Materials for Biomedical Applications: Preparation, Characterization, and Implementation explores the emerging area of lignin-based materials as a platform for advanced biomedical applications, guiding the reader from source through to implementation. The first part of the book introduces the basics of lignin, including extraction methods, chemical modifications, structure and composition, and properties that make lignin suitable for biomedical applications. In addition, structural characterization techniques are described in detail. The next chapters focus on the preparation of lignin-based materials for biomedical applications, presenting methodologies for lignin-based nanoparticles, hydrogels, aerogels, and nanofibers, and providing in-depth coverage of lignin-based materials with specific properties—including antioxidant properties, UV absorbing capability, antimicrobial properties, and colloidal particles with tailored properties—and applications, such as drug and gene delivery, and tissue engineering. Finally, future perspectives and possible new applications are considered. This is an essential reference for all those with an interest in lignin-based materials and their biomedical applications, including researchers and advanced students across bio-based polymers, polymer science, polymer chemistry, biomaterials, nanotechnology, materials science and engineering, drug delivery, and biomedical engineering, as well as industrial R&D and scientists involved with bio-based polymers, specifically for biomedical applications. Unlocks the potential of lignin-based materials with advanced properties for cutting-edge applications in areas such as drug delivery, gene delivery and tissue engineering Presents state-of-the-art methodologies used in the development of lignin-based nanoparticles, hydrogels, aerogels and nanofibers Explains the fundamentals of lignin, including structure and composition, extraction and isolation methods, types and properties, chemical modifications, and characterization techniques
Download or read book Lignin written by and published by . This book was released on 2020 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive overview on origin, structure, properties, modification strategies and applications of the biopolymer lignin. It is organized into four themed parts. The first part focuses on the analysis and characterization of the second most abundant biopolymer. The following part is devoted to the biological aspects of lignin such as biosynthesis and degradation. In the third part, chemical modification strategies and the preparation of composites as well as nano- and microparticles are discussed.The final part addresses the industrial application of lignin and its derivatives, as well as lignin materials. The usage for synthesis of biofuels, fine chemicals and in agriculture and food industry is covered. This book is a comprehensive source for researchers, scientists and engineers working in the field of biopolymers as well as renewable materials and sources.
Download or read book Functional Materials from Lignin written by Xian Jun Loh and published by World Scientific Publishing. This book was released on 2018-06-12 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lignin is one of the most abundant plant-derived feedstock on earth and qualifies as a renewable material. However, lignin is widely recognized as waste byproduct of the cellulosic ethanol and pulp and paper industry. How to properly modify lignin and develop it into functional polymers is a huge challenge, but an attractive research topic in both industry and academia. This book brings together leading engineering approaches to address the challenges of lignin valorization. It presents the chemistry and properties of different types of lignin, and explores the cutting-edge approaches of lignin modifications. Unlike any existing texts, this book not only summarizes the traditional ways of using lignin, but also presents various potential applications of lignin materials together with advanced processing techniques. The basis of lignin (its chemistry, types and properties) is described, as are different approaches to modify it. The features of lignin and its copolymers are explored and aligned with their potential applications. In addition to the carbon materials from lignin, the advanced fabrication approaches to engineer lignin-based micro/nano-structural materials are summarized.
Download or read book Bio Based Polymers and Composites written by Amadou Belal Gueye and published by CRC Press. This book was released on 2024-08-23 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: When applying human ingenuity and experience to natural resources and processes, scientists and researchers can maximize the potential of nature for human benefit. In that vein, this book explores the latest breakthroughs in natural biopolymers, green composites, and green nanocomposites, a field that is rapidly expanding. The volume looks at bio-based polymers and composites for environmental sustainability, such as in bioremediation and for wastewater treatment. It discusses natural polymers from waste products and considers the use of bio-based polymers and composites in fertilization in horticulture as well as in industry and construction, such as for recycling of concrete, for gas sensing applications for safety, for fiber-reinforced epoxy composites, etc.
Download or read book Lignin and Lignans written by Cyril Heitner and published by CRC Press. This book was released on 2016-04-19 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past four decades, there has been immense progress in every area of lignin science, ranging from the enzymology of lignin biodegradation, to the delignification of wood fiber during pulping and bleaching, to advances in spectroscopy. Lignin and Lignans: Advances in Chemistry captures the developments that have been achieved by world-class
Download or read book Functional Nanocomposite Hydrogels written by Anuj Kumar and published by Elsevier. This book was released on 2023-06-22 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: Functional Nanocomposite Hydrogels: Synthesis, Characterization, and Biomedical Applications reviews how the unique properties of nanoscale composite materials make them ideal candidates for use in biomedical hydrogels. The book covers a range of key nanocomposite materials for use in biomedical hydrogels, including graphene quantum dot, cellulose and collagen nanocomposites. A wide selection of biomedical applications for functional nanocomposite hydrogels is explored, from drug delivery and cancer therapy, to wound healing and bioimaging. This is a key reference for those working in the fields of biomaterials, nanotechnology, pharmacology, biomedical engineering, and anyone with a particular interest in composites and hydrogels. To improve the properties of conventional hydrogels, nanoparticles or nanostructures are incorporated into the hydrogel networks, forming a composite hydrogel with specialized functional properties which are tailored to a specific biomedical application. Reviews the benefits and challenges of nanocomposites as novel materials in biomedical hydrogels, providing the reader with a wider range of choice and improved options for hydrogel development Describes the synthesis and characterization of nanocomposite hydrogels, offering end-to-end analysis of the process Details the range of applications in biomedicine for nanocomposite hydrogels, including biosensing, antimicrobics and drug delivery
Download or read book Lignin Chemistry written by Yuhe Liao and published by John Wiley & Sons. This book was released on 2024-09-03 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lignin Chemistry A thorough reference guide to Lignin Chemistry, from inherent structure revealing to transformation into chemicals, fuels, and materials Climate change, driven by rising greenhouse gas emissions, is the defining challenge of our time. Reducing our dependence on non-renewable resources such as fossil fuels will require alternative, more sustainable resources. Lignin, the only widely-occurring, renewable, aromatic bio-polymer in Nature, has a range of application potential in the production of chemicals, fuels, and other industrial materials. Lignin science has become one of the fastest-growing and most significant areas of sustainable chemistry in the world. Lignin Chemistry: Characterization, Isolation, and Valorization presents a systematic, multidisciplinary overview of this cutting-edge field and its current state of research. Beginning with a robust characterization of lignin, the book addresses the isolation and transformation of lignin, as well as the book inspires with a plethora of applications. The result is a critical resource for researchers and professionals in any area of academic or industry where renewable biomass, in particular lignin, has importance. Lignin Chemistry readers will find: Thermochemical and catalytic strategies for lignin conversion Detailed discussion of the valorization of lignin towards biopolymers, nanoparticles, carbon fibers and materials, and hydrogels An authorial team with immense and varied research experience Lignin Chemistry is ideal for chemical engineers, catalytic chemists, biochemists, material scientists, and analytical chemists in industry.
Download or read book Sustainable Agriculture Reviews 56 written by Ajay Rana and published by Springer Nature. This book was released on 2022-02-10 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the sources, extraction, processing and applications of value-added compounds from agro-waste, with a focus on drug delivery, tea, apple pomace, lignin nanocomposites, bioethanol, fertilizers and sitosterol. Food residues provide bioactive molecules, enzymes, vitamins, antioxidants, and animal feed.
