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Author : John Mmari Onyari
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (357 download)
Download or read book Multicomponent Polymers Containing Poly (lactic Acid) written by John Mmari Onyari and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sandeep Dhaliwal Sidhu
Publisher :
ISBN 13 :
Total Pages : 174 pages
Book Rating : 4.:/5 (19 download)
Download or read book Super Toughened Poly(lactic Acid) Multicomponent Reactive Blends for Fused Deposition 3D Printing written by Sandeep Dhaliwal Sidhu and published by . This book was released on 2018 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years developments in additive manufacturing, also known as 3D printing, have resulted in the increased use of this technology in many sectors, mainly in medicine, engineering and education. Nowadays, 3D printing is evolving from a pure rapid prototyping technique to functional manufacturing. However, industrial applications are limited since polymer products built by 3D printing lack good mechanical properties. The main objective of this study is to develop a reactive compounded polylactic acid (PLA) as an alternative to standard PLA strand, but with improved impact strength and elongation at break properties for the Fused Deposition method (FDM) of 3D printing. PLA is one of the most common used thermoplastics in biomedical fields and packaging application. It is a biodegradable polymer with excellent mechanical properties, thus it is considered as a potential replacement for traditional petroleum-based thermoplastics. In this study, the mechanical and thermal properties of modified PLA blends are examined. These are prepared using crosslinking techniques between PLA, elastomeric ethylene-butyl acrylate-glycidyl methacrylate terpolymer (EBA-GMA), the zinc ionomer of the ethylene-methacrylicacid copolymer (EMMA-Zn) and high molecular weight polyesters (PBAT, PBSA, Hytrel). The mechanical properties and crystallisation behaviour of compatibilized PLA blends were found to be considerably different from those of pure PLA. The impact strength of 3D printed samples of PLA/GMA/EMAA blends with 40 wt% Hytrel and PBAT were seven times more than that of pure PLA samples. The elongation at break of 3D printed samples prepared by using reactive blends having PBAT 40% was improved 40 times compared with neat PLA.
Author : Jagan Mohan Dodda
Publisher : Royal Society of Chemistry
ISBN 13 : 1837670064
Total Pages : 544 pages
Book Rating : 4.8/5 (376 download)
Download or read book Multicomponent Hydrogels written by Jagan Mohan Dodda and published by Royal Society of Chemistry. This book was released on 2023-05-22 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrogels are highly hydrated three dimensional networks with the ability to mimic the extracellular matrix of bodily tissues and have thus found application in a wide range of biomedical applications. Unique physiochemical properties such as biocompatibility, water permeability, stimuli responsiveness and self-healing characteristics make them especially useful for use as scaffolds and matrices drug delivery, tissue engineering/regeneration and sensing. Their weak and brittle nature, however, often limits their widespread application where improved mechanical strength is required. To resolve this problem, there has been a significant amount of research into the improvement of their mechanical properties. Among these efforts, versatile multicomponent hydrogels have received much attention as their physiochemical properties can be structurally engineered to provide a wide range of desired properties. These multicomponent formulations also allow for the combination of natural and synthetic polymers, which offers the scope to exploit the advantages of each component, with the synergistic effects resulting from mutual interactions. This book critically discusses the fundamental chemistry, synthesis, characterisation, physiochemical and biological properties of various types of multicomponent hydrogels. It reviews the different strategies employed in designing and synthesizing cutting-edge multicomponent hydrogels and their key applications in biomedical fields. The work is suitable for researchers working in the specific area of multicomponent hydrogels, and also more generally for those working in materials science, biomedical engineering, biomaterials science and tissue engineering.
Author : Jin Kuk Kim
Publisher : Springer
ISBN 13 : 9401773246
Total Pages : 411 pages
Book Rating : 4.4/5 (17 download)
Download or read book Multicomponent Polymeric Materials written by Jin Kuk Kim and published by Springer. This book was released on 2016-08-26 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book offers an in-depth review of the materials design and manufacturing processes employed in the development of multi-component or multiphase polymer material systems. This field has seen rapid growth in both academic and industrial research, as multiphase materials are increasingly replacing traditional single-component materials in commercial applications. Many obstacles can be overcome by processing and using multiphase materials in automobile, construction, aerospace, food processing, and other chemical industry applications. The comprehensive description of the processing, characterization, and application of multiphase materials presented in this book offers a world of new ideas and potential technological advantages for academics, researchers, students, and industrial manufacturers from diverse fields including rubber engineering, polymer chemistry, materials processing and chemical science. From the commercial point of view it will be of great value to those involved in processing, optimizing and manufacturing new materials for novel end-use applications. The book takes a detailed approach to the description of process parameters, process optimization, mold design, and other core manufacturing information. Details of injection, extrusion, and compression molding processes have been provided based on the most recent advances in the field. Over two comprehensive sections the book covers the entire field of multiphase polymer materials, from a detailed description of material design and processing to the cutting-edge applications of such multiphase materials. It provides both precise guidelines and general concepts for the present and future leaders in academic and industrial sectors.
Author : Cornelia Vasile
Publisher : CRC Press
ISBN 13 : 9004180524
Total Pages : 662 pages
Book Rating : 4.0/5 (41 download)
Download or read book Environmentally Degradable Materials based on Multicomponent Polymeric Systems written by Cornelia Vasile and published by CRC Press. This book was released on 2009-12-21 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmentally Degradable Materials (EDPs) should replace petroleum-based plastics where recycling is not viable for logistic or labor cost reason. This book discusses the general background of obtaining such systems, compatibilization methodologies, control of the rate of degradation and final products after degradation, life time assessment, tox
Author : Jose James
Publisher : CRC Press
ISBN 13 : 0429943466
Total Pages : 301 pages
Book Rating : 4.4/5 (299 download)
Download or read book Polymers and Multicomponent Polymeric Systems written by Jose James and published by CRC Press. This book was released on 2019-12-06 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, multicomponent polymers have generated much interest due to their excellent properties, unique morphology and high-end applications. Book focusses on thermal, thermo-mechanical and dielectric analysis of polymers and multicomponent polymeric systems like blends, interpenetrating polymeric networks (IPNs), gels, polymer composites, nanocomposites. Through these analyses, it provides an insight into the stability of polymer systems as a function of time, processing and usage. Aimed at polymer chemists, physicists and engineers, it also covers ASTM /ISO and other standards of various measurement techniques for systematic analysis in materials science.
Author : Maya J John
Publisher : Royal Society of Chemistry
ISBN 13 : 1849735190
Total Pages : 369 pages
Book Rating : 4.8/5 (497 download)
Download or read book Natural Polymers written by Maya J John and published by Royal Society of Chemistry. This book was released on 2012-08-31 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the search for sustainable materials, natural polymers present an attractive alternative for many applications compared to their synthetic counterparts derived from petrochemicals. The two volume set, Natural Polymers, covers the synthesis, characterisation and applications of key natural polymeric systems including their morphology, structure, dynamics and properties. Volume one focuses on natural polymer composites, including both natural and protein fibres, and volume two on natural polymer nanocomposites. The first volume examines the characterization, life cycle assessment and new sources of natural fibres and their potential as a replacement for synthetic fibres in industrial applications. It then explores the important advancements in the field of wool, silk, spidersilk and mussel byssus fibres. The second volume looks at the properties and characterization of cellulose, chitosan, furanic, starch, wool and silk nanocomposites and the potential industrial applications of natural polymer nanocomposites. With contributions from leading researchers in natural polymers from around the globe, Natural Polymers provides a valuable reference for material scientists, polymer chemists and polymer engineers.
Author : Fernão D. Magalhães
Publisher : MDPI
ISBN 13 : 3038970417
Total Pages : 244 pages
Book Rating : 4.0/5 (389 download)
Download or read book Graphene-Polymer Composites written by Fernão D. Magalhães and published by MDPI. This book was released on 2018-09-13 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Graphene-Polymer Composites" that was published in Polymers
Author : Dan Rosu
Publisher : Springer
ISBN 13 : 3319251961
Total Pages : 408 pages
Book Rating : 4.3/5 (192 download)
Download or read book Photochemical Behavior of Multicomponent Polymeric-based Materials written by Dan Rosu and published by Springer. This book was released on 2016-11-21 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers in-depth insights into the photochemical behavior of multicomponent polymeric-based materials, with a particular emphasis on the photodegradation and photostabilization of these materials. Studying various classes of materials bases such as polysaccharides, wood, synthetic polymers, rubber blends, and nanocomposites, it offers a valuable reference source for graduate and postgraduate students, engineering students, research scholars and polymer engineers working in industry.
Author : Alison Camille Fowlks
Publisher :
ISBN 13 :
Total Pages : 518 pages
Book Rating : 4.3/5 (129 download)
Download or read book Development of Polylactic Acid-based Materials Through Reactive Modification written by Alison Camille Fowlks and published by . This book was released on 2009 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sabu Thomas
Publisher : John Wiley & Sons
ISBN 13 : 3527331530
Total Pages : 972 pages
Book Rating : 4.5/5 (273 download)
Download or read book Characterization of Polymer Blends written by Sabu Thomas and published by John Wiley & Sons. This book was released on 2015-02-09 with total page 972 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filling the gap for a reference dedicated to the characterization of polymer blends and their micro and nano morphologies, this book provides comprehensive, systematic coverage in a one-stop, two-volume resource for all those working in the field. Leading researchers from industry and academia, as well as from government and private research institutions around the world summarize recent technical advances in chapters devoted to their individual contributions. In so doing, they examine a wide range of modern characterization techniques, from microscopy and spectroscopy to diffraction, thermal analysis, rheology, mechanical measurements and chromatography. These methods are compared with each other to assist in determining the best solution for both fundamental and applied problems, paying attention to the characterization of nanoscale miscibility and interfaces, both in blends involving copolymers and in immiscible blends. The thermodynamics, miscibility, phase separation, morphology and interfaces in polymer blends are also discussed in light of new insights involving the nanoscopic scale. Finally, the authors detail the processing-morphology-property relationships of polymer blends, as well as the influence of processing on the generation of micro and nano morphologies, and the dependence of these morphologies on the properties of blends. Hot topics such as compatibilization through nanoparticles, miscibility of new biopolymers and nanoscale investigations of interfaces in blends are also addressed. With its application-oriented approach, handpicked selection of topics and expert contributors, this is an outstanding survey for anyone involved in the field of polymer blends for advanced technologies.
Author : Wolfram Schnabel
Publisher : John Wiley & Sons
ISBN 13 : 3527677739
Total Pages : 361 pages
Book Rating : 4.5/5 (276 download)
Download or read book Polymers and Electromagnetic Radiation written by Wolfram Schnabel and published by John Wiley & Sons. This book was released on 2014-01-10 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: This first book to cover the interaction of polymers with radiation from the entire electromagnetic spectrum adopts a multidisciplinary approach to bridge polymer chemistry and physics, photochemistry, photophysics and materials science. The text is equally unique in its scope, devoting equal amounts of attention to the three aspects of synthesis, characterization, and applications. The first part deals with the interaction of polymers with non-ionizing radiation in the frequency-range from sub-terahertz via infrared radiation to visible and ultraviolet light, while the second covers interaction with ionizing radiation from the extreme ultraviolet to ?-ray photons. The result is a systematic overview of how both types of radiation can be used for different polymerization approaches, spectroscopy methods and lithography techniques. Authored by a world-renowned researcher and teacher with over 40 years of experience in the field, this is a highly practical and authoritative guide.
Author : Ashutosh Tiwari
Publisher : John Wiley & Sons
ISBN 13 : 1118522931
Total Pages : 571 pages
Book Rating : 4.1/5 (185 download)
Download or read book Biomedical Materials and Diagnostic Devices written by Ashutosh Tiwari and published by John Wiley & Sons. This book was released on 2012-10-16 with total page 571 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biomedical Materials and Diagnostics Devices provides an up-to-date overview of the fascinating and emerging field of biomedical materials and devices, fabrication, performance, and uses The biomedical materials with the most promising potential combine biocompatibility with the ability to adjust precisely the biological phenomena in a controlled manner. The world market for biomedical and diagnostic devices is expanding rapidly and the pace of academic research resulted in about 50,000 published papers in recent years. It is timely, therefore, to assemble a volume on this important subject. The chapters in the book seek to address progress in successful design strategies for biomedical materials and devices such as the use of collagen, crystalline calcium orthophosphates, amphiphilic polymers, polycaprolactone, biomimetic assembly, bio-nanocomposite matrices, bio-silica, theranostic nanobiomaterials, intelligent drug delivery systems, elastomeric nanobiomaterials, electrospun nano-matrices, metal nanoparticles, and a variety of biosensors. This large and comprehensive volume includes twenty chapters authored by some of the leading researchers in the field, and is divided into four main areas: biomedical materials; diagnostic devices; drug delivery and therapeutics; and tissue engineering and organ regeneration.
Author : Zheng Zhang
Publisher :
ISBN 13 :
Total Pages : 43 pages
Book Rating : 4.:/5 (914 download)
Download or read book Synthesis of PEGylated Poly(lactic Acid) Via Radical Coupling written by Zheng Zhang and published by . This book was released on 2015 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: Poly(lactic acid) (PLA) plays an important role in biodegradable polymers due to its unique properties. However, PLA only has reactive end groups; therefore it is difficult to make bulk modifications and an efficient way to functionalize the main-chain of this polyester needs to be found. 2-Bromo-3-hydroxypropanoic acid (BHPA) is a halogenated constitutional isomer of lactic acid. In this thesis, BHPA is used to prepared to make statistical copolymers with lactic acid by direct polycondensation to provide reactive sites along the polymer backbone. The halogen is distributed along the backbone of the copolymer, such as a grafting-to structure can be made. Poly(ethylene glycol) (PEG) is most often used as a hydrophilic segment because of its biodegradability and biocompatibility. The PEGylated poly(lactic acid) can serve as a polymer to which various medical and drug delivery systems can be attached. Here, mPEG side chains were formed by grafting mPEG homopolymers with 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) end groups onto the polymer by a radical coupling reaction. TEMPO is one of the most widely used nitroxide radicals due to its remarkable persistency. PEGylated poly(lactic acid) can be prepared via a radical coupling reaction of PEG-supported TEMPO with the brominated poly(lactic acid).
Author : United States. Patent and Trademark Office
Publisher :
ISBN 13 :
Total Pages : 1480 pages
Book Rating : 4.:/5 (89 download)
Download or read book Official Gazette of the United States Patent and Trademark Office written by United States. Patent and Trademark Office and published by . This book was released on 2001 with total page 1480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robin Smith
Publisher : Elsevier
ISBN 13 : 1845690761
Total Pages : 548 pages
Book Rating : 4.8/5 (456 download)
Download or read book Biodegradable Polymers for Industrial Applications written by Robin Smith and published by Elsevier. This book was released on 2005-05-06 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: The vast majority of plastic products are made from petroleum-based synthetic polymers that do not degrade in a landfill or in a compost-like environment. Therefore, the disposal of these products poses a serious environmental problem. An environmentally-conscious alternative is to design/synthesize polymers that are biodegradable.Biodegradable polymers for industrial applications introduces the subject by outlining the classification and development of biodegradable polymers. Materials available for the production of biodegradable polymers are explored. Polymers derived from sugars, natural fibres, renewable forest resources, poly(lactic acid) and protein-nanoparticle composites are looked at in detail in this section. The properties and mechanisms of degradation are looked at, prefacing the subject with a chapter on current standards. The final part explores opportunities for industrial applications, with chapters on packing, agriculture and biodegradable polycaprolactone foams in supercritical carbon dioxide.Biodegradable polymers for industrial applications explores the fundamental concepts concerning the development of biodegradable polymers, degradable polymers from sustainable sources, degradation and properties and industrial applications. It is an authoritative book that is invaluable for academics, researchers and policy makers in the industry. - Reviews the importance and industrial use of biodegradable polymers and degradable polymers from sustainable sources - An invaluable resource for both academics and industry - Edited by a leading authority in the field with contributions from a worldwide team of experts
Author : Sabu Thomas
Publisher : Elsevier
ISBN 13 : 0128094311
Total Pages : 612 pages
Book Rating : 4.1/5 (28 download)
Download or read book Crystallization in Multiphase Polymer Systems written by Sabu Thomas and published by Elsevier. This book was released on 2017-09-15 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crystallization in Multiphase Polymer Systems is the first book that explains in depth the crystallization behavior of multiphase polymer systems. Polymeric structures are more complex in nature than other material structures due to their significant structural disorder. Most of the polymers used today are semicrystalline, and the subject of crystallization is still one of the major issues relating to the performance of semicrystalline polymers in the modern polymer industry. The study of the crystallization processes, crystalline morphologies and other phase transitions is of great significance for the understanding the structure-property relationships of these systems. Crystallization in block copolymers, miscible blends, immiscible blends, and polymer composites and nanocomposites is thoroughly discussed and represents the core coverage of this book. The book critically analyzes the kinetics of nucleation and growth process of the crystalline phases in multi-component polymer systems in different length scales, from macro to nanoscale. Various experimental techniques used for the characterization of polymer crystallization process are discussed. Written by experts in the field of polymer crystallization, this book is a unique source and enables professionals and students to understand crystallization behavior in multiphase polymer systems such as block copolymers, polymer blends, composites and nanocomposites. - Covers crystallization of multiphase polymer systems, including copolymers, blends and nanocomposites - Features comprehensive, detailed information about the basic research, practical applications and new developments for these polymeric materials - Analyzes the kinetics of nucleation and growth process of the crystalline phases in multi-component polymer systems in different length scales, from macro to nanoscale
