Lignin Based Polyurethanes Synthesis And Characterization
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Synthesis and Characterization of Novel Functional Lignins -
| Author | : Jennifer Dietz |
| Publisher | : Apprimus Wissenschaftsverlag |
| Total Pages | : 301 |
| Release | : 2015-12-02 |
| Genre | : Science |
| ISBN | : 386359388X |
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.
Synthesis and Characterization of a Lignin Based Thermoplastic
| Author | : Eric L. Young |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2017 |
| Genre | : Chemistry, Technical |
| ISBN | : |
Lignin based copolymers were synthesized using a single pot, solvent free, melt condensation reaction. The synthesis occurred in two stages. In the first stage a prepolymer consisting of a diol and diacid with varying amounts diamine was heated under vacuum. In the second stage, prepolymer was mixed with kraft lignin and further reacted under vacuum at elevated temperature. Progression of polymerization was monitored using FT-IR and ESI-MS. Polymer properties were characterized using DMA, DSC and TGA techniques. The morphology was analyzed using polarized optical microscopy. Polymer mechanical properties were found to be influenced by the type of diacid, lignin and diamine content, ball milling of lignin and presence of an acid catalyst. The lignin-copolymers were shown to have thermoplastic behavior. Additionally, above 30 wt% lignin the lignin-copolymers did not exhibit melt behavior.
Lignin Chemistry and Applications
| Author | : Jin Huang |
| Publisher | : Elsevier |
| Total Pages | : 276 |
| Release | : 2019-02-07 |
| Genre | : Technology & Engineering |
| ISBN | : 0128139633 |
Lignin Chemistry and Application systematically discusses the structure, physical and chemical modification of lignin, along with its application in the field of chemicals and materials. It presents the history of lignin chemistry and lignin-modified materials, describes recent progresses, applications and studies, and prospects the development direction of high value applications of lignin in the field of material science. In addition to covering the basic theories and technologies relating to the research and application of lignin in polymer chemistry and materials science, the book also summarizes the latest applications in rubber, engineering plastics, adhesives, films and hydrogels. Systematically discusses the structure, physical and chemical modification of lignin and its application in materials Presents the latest research results in the field of lignin Indicates the development direction of high value applications of lignin in a range of fields, including petrochemicals, household applications, medicine, agriculture, and more
Sustainable Production and Applications of Waterborne Polyurethanes
| Author | : Inamuddin |
| Publisher | : Springer Nature |
| Total Pages | : 192 |
| Release | : 2021-10-20 |
| Genre | : Technology & Engineering |
| ISBN | : 3030728692 |
This edited book compiles all category viewpoints in waterborne polyurethanes (WPUs) dispersions, composites, characterizing techniques, and allied applications such as coatings, adhesives, sealants, anticorrosive, flame-retardant, and biomedical applications. The book brings together panels of highly accomplished experts in the field of advanced polymers for versatile applications. It encompasses basic studies and addresses topics of novel issues which cover all the aspects in one place. The book is an invaluable guide to newcomers, research scholars, professors, and R&D industrial experts working in the field of polyurethane chemistry. Polyurethanes are excellent materials in coating technology owing to their chemical resistance, toughness, abrasion resistance, and mechanical stability. However, polyurethane dispersion contains volatile organic compounds (VOCs) and hazardous air pollutants (HAPs) which are harmful to the environment. Hence, green chemistry research focuses on discovery of waterborne polyurethanes (WPUs) and pay attention. WPUs have fascinated growing interest in wide range of industrial and commercial applications.
Lignin
| Author | : Swati Sharma |
| Publisher | : Springer Nature |
| Total Pages | : 304 |
| Release | : 2020-04-13 |
| Genre | : Technology & Engineering |
| ISBN | : 3030406636 |
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.
Lignin-based Materials
| Author | : Kuruvilla Joseph |
| Publisher | : Royal Society of Chemistry |
| Total Pages | : 253 |
| Release | : 2023-06-14 |
| Genre | : Technology & Engineering |
| ISBN | : 1839167858 |
Current environmental and energy concerns have led to lignin gaining increased attention in the last decade as a renewable biomass. Due to its structural and functional properties, such as antimicrobial behaviour, biodegradability, biocompatibility and ease of surface modifications, lignin-based materials have gained popularity in the biomedical field with applications ranging from tissue engineering scaffolds and wound dressing materials to drug delivery carriers. Using this book, the reader will learn about the chemistry of lignin, and the characterization, fabrication and properties of lignin-based composites with different matrices (thermosets, thermoplastics, elastomers etc.). In addition, the book illustrates how these materials are used in medical applications, covering drug delivery, wound dressing, tissue engineering, imaging, etc. Providing a neat overview of the current research for the biomaterials science community, this book is a one-stop resource for researchers and practitioners working on lignin-based biomaterials. For those active in the broader fields of materials science and biomedical engineering, this will be a useful reference and study aid.
Sustainable Polymers from Biomass
| Author | : Chuanbing Tang |
| Publisher | : John Wiley & Sons |
| Total Pages | : 458 |
| Release | : 2017-02-21 |
| Genre | : Technology & Engineering |
| ISBN | : 352734019X |
Offering a unique perspective summarizing research on this timely important topic around the globe, this book provides comprehensive coverage of how molecular biomass can be transformed into sustainable polymers. It critically discusses and compares a few classes of biomass - oxygen-rich, hydrocarbon-rich, hydrocarbon and non-hydrocarbon (including carbon dioxide) as well as natural polymers - and equally includes products that are already commercialized. A must-have for both newcomers to the field as well as established researchers in both academia and industry.
Lignin-based Materials for Biomedical Applications
| Author | : Patrícia Figueiredo |
| Publisher | : Elsevier |
| Total Pages | : 450 |
| Release | : 2021-07-26 |
| Genre | : Technology & Engineering |
| ISBN | : 0128203048 |
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
Conversion of Lignin into Bio-Based Chemicals and Materials
| Author | : Chunbao Xu |
| Publisher | : Springer |
| Total Pages | : 164 |
| Release | : 2017-06-05 |
| Genre | : Science |
| ISBN | : 366254959X |
This book presents an overview of various types of lignin and their unique structures and properties, as well as utilizations of crude or modified technical lignin for high-value bioproducts such as lignin-based PF resins/adhesives, epoxy resins, PF foams, PU foams, rubber reinforcement and carbon fibers and as dispersants in drilling fluids in the oil and gas industry. It subsequently discusses various thermal/chemical modification techniques (pyrolysis, direct liquefaction and de-polymerization) for converting lignin into oils and chemical feedstocks, and the utilization of crude lignin, lignin-derived oils or depolymerized lignins (DLs) of reduced molecular weights and improved reactivity to produce lignin-based PF resins/adhesives, PF/PU foams and epoxy resins. The book will interest and benefit a broad readership (graduate students, academic researchers, industrial researchers and practitioners) in various fields of science and technology (chemical engineering, biotechnology, chemistry, material science, forestry, etc.). Chunbao (Charles) Xu, PhD, is currently a Professor of Chemical Engineering and NSERC/FPInnovations Industrial Research Chair in Forest Biorefinery at the University of Western Ontario, Canada. Fatemeh Ferdosian, PhD, is currently a postdoctoral fellow at the University of Waterloo, Canada.
