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Author: John Zhanhu Guo
Publisher: Elsevier
ISBN: 9780128150672
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
Polymer-Based Multifunctional Nanocomposites and Their Applications provides an up-to-date review of the latest advances and developments in the field of polymer nanocomposites. It will serve as a one-stop reference resource on important research accomplishments in the area of multifunctional nanocomposites, with a particular emphasis placed on the use of nanofillers and different functionality combinations. Edited and written by an expert team of researchers in the field, the book provides a practical analysis of functional polymers, nanoscience, and nanotechnology in important and developing areas, such as transportation engineering, mechanical systems, aerospace manufacturing, construction materials, and more. The book covers both theory and experimental results regarding the relationships between the effective properties of polymer composites and those of polymer matrices and reinforcements.
Author: Jinsong Leng
Publisher: CRC Press
ISBN: 1439816832
Category : Technology & Engineering
Languages : en
Pages : 462
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Book Description
The novel properties of multifunctional polymer nanocomposites make them useful for a broad range of applications in fields as diverse as space exploration, bioengineering, car manufacturing, and organic solar cell development, just to name a few. Presenting an overview of polymer nanocomposites, how they compare with traditional composites, and th
Author: Brigitte Voit
Publisher: John Wiley & Sons
ISBN: 1119188881
Category : Technology & Engineering
Languages : en
Pages : 336
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Book Description
This reference/text addresses concepts and synthetic techniques for the preparation of polymers for state-of-the-art use in biomedicine, synthetic biology, and bionanotechnology.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 56
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Book Description
This final report summarizes research works on photorefractive materials which are single chain, fully functionalized polymers. Three polymeric systems were described, namely, functionalized polyurethanes, functionalized conjugated polymers and polyimides containing porphyrin moieties. Detailed synthetic procedures were outlined. Extensive physical studies, including photoconductivity measurements, electro-optic measurements and two beam coupling studies were carried out. The results revealed the unique features for fully functional, photorefractive polymers. This work also lead to the development of a novel synthetic methodology for polycondensation by utilizing the Stille coupling reaction. (MM).
Author: Qingsheng Liu
Publisher:
ISBN:
Category : Biochemical engineering
Languages : en
Pages : 155
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Book Description
This dissertation describes the design and development of ultralow-fouling multifunctional polymers including a traditional antifouling polymer-polyacrylamide, zwitterionic amino acid-based polymers, zwitterion-containing copolymers, and surface charge-switching antifouling polymers. In the first section, a traditional polymer, polyacrylamide, was investigated for its antifouling properties. The polyacrylamide brushes were prepared on gold surfaces via the method of atom transfer radical polymerization (ATRP). The surface brushes were shown to highly suppress the single protein adsorption, which meets the commonly used criteria for ultralow fouling surfaces. Moreover, for the first time, it was demonstrated that polyacrylamide brushes highly resist protein adsorption from complex media as well. My work has shown that polyacrylamide ultralow fouling coating is an effect method to suppress the undesirable biofouling. In the second section, a new group of amino acid-based biomimetic ultralow fouling polymers were designed and developed. Here we proposed to link the side chain of the selected amino acids with the proper vinyl monomers. The polymer brushes were grafted onto surfaces via a surface-initiated photoiniferter-mediated polymerization. The antifouling performances of the grafted polymers to resist protein adsorption, cell adhesion, and bacterial attachment (including the short-term and long-term attachment were evaluated. Our work has proved that this kind of materials can be considered effective alternatives to the traditional antifouling materials.In the third section, zwitterion-containing copolymers were investigated for their antifouling properties. Random copolymers of zwitterionic sulfobetaine methacrylate (SBMA) and hydrophobic butyl methacrylate (BMA), poly(sulfobetaine methacrylate-co- butyl methacrylate) (PSB), with different SBMA/BMA molar ratios, were synthesized by a very simple free radical polymerization method. Although incorporating the hydrophobic moiety, the PSB copolymers with small concentration retained excellent antifouling properties. Considering their excellent antifouling properties, along with the extremely simple synthesis method, PSB copolymers hold great potential for biomedical applications, in the form of both solvent-cast film and surface coating.In the last section, we designed and developed pH-induced surface charge-switching polymer, poly[2-((2-((2-(methacryloyloxy)ethyl) dimethylammonio)ethyl) carbamoyl)-cyclohex-1-ene-1-carboxylate] (polyCBCA). The polyCBCA retained zwitterionic form in the physiological condition (pH 7.4) while altering into cationic form upon hydrolysis in the tumor tissue (pH 6.5). Nanogels made of zwitterionic polyCBCA were found to be ultrastable in undiluted serum with no aggregation, but switched to cationic form promoting cell uptake in tumor tissue. The polyCBCA nanogels were further conjugated with doxorubicin (DOX) for effective intracellular drug release. The smart surface charge-switching polyCBCA has great potential for cancer therapy.
Author: John Zhanhu Guo
Publisher: Elsevier
ISBN: 9780128150672
Category : Technology & Engineering
Languages : en
Pages : 0
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Book Description
Polymer-Based Multifunctional Nanocomposites and Their Applications provides an up-to-date review of the latest advances and developments in the field of polymer nanocomposites. It will serve as a one-stop reference resource on important research accomplishments in the area of multifunctional nanocomposites, with a particular emphasis placed on the use of nanofillers and different functionality combinations. Edited and written by an expert team of researchers in the field, the book provides a practical analysis of functional polymers, nanoscience, and nanotechnology in important and developing areas, such as transportation engineering, mechanical systems, aerospace manufacturing, construction materials, and more. The book covers both theory and experimental results regarding the relationships between the effective properties of polymer composites and those of polymer matrices and reinforcements.
Author: Bill M. Culbertson
Publisher: Springer
ISBN:
Category : Gardening
Languages : en
Pages : 576
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Book Description
"Polymer Science and Engineering: Challenges, Needs, and Opportunities," a report issued in 1981 by the National Research Council's ad hoc Panel on Polymer Science and Engineering gives ample support for the urgent need of increased commitment to basic studies on polymers. Needs and opportunities, mentioned in the Panel's list, included polymerization methods, specialty polymers, high performance materials, and in situ (reaction injection molding) polymerization for direct conversion of monomers/oligomers to useful shapes. Clearly, in all these and several other areas, advances in polymer synthesis are needed. Whether one takes a look at the commodity or specialty polymers area or considers areas of growing needs, such as polymers for the automotive, aerospace, electronics, communications, separations, packaging, biomedical, etc., advances in polymer synthesis are needed. Polymeric materials, as they are constantly being modified and improved, fine-tuned for current and additional needs, and more readily adopted by industry and the public, will have a vastly expanding influence on everyday life. However, lack of long-term support of meaningful size for basic research on all facets of polymer chemistry and engineering, with particular emphasis on making needed advances in polymer synthesis, could well stunt the growth of high techn.ology in our country. Expanding this thought, lack of attention to basic research on polymer synthesis could help foster or insure that we won't have materials with performance profiles to meet requirements of emerging technologies and national needs, in a reasonably economic and timely fashion.
Author: Shaul M. Aharoni
Publisher: Springer Science & Business Media
ISBN: 1461530164
Category : Science
Languages : en
Pages : 354
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Book Description
Polymer science is a technology-driven science. More often than not, technological breakthroughs opened the gates to rapid fundamental and theoretical advances, dramatically broadening the understanding of experimental observations, and expanding the science itself. Some of the breakthroughs involved the creation of new materials. Among these one may enumerate the vulcanization of natural rubber, the derivatization of cellulose, the giant advances right before and during World War II in the preparation and characterization of synthetic elastomers and semi crystalline polymers such as polyesters and polyamides, the subsequent creation of aromatic high-temperature resistant amorphous and semi-crystal line polymers, and the more recent development of liquid-crystalline polymers mostly with n~in-chain mesogenicity. other breakthroughs involve the development of powerful characterization techniques. Among the recent ones, the photon correlation spectroscopy owes its success to the advent of laser technology, small angle neutron scattering evolved from n~clear reactors technology, and modern solid-state nuclear magnetic resonance spectroscopy exists because of advances in superconductivity. The growing need for high modulus, high-temperature resistant polymers is opening at present a new technology, that of more or less rigid networks. The use of such networks is rapidly growing in applications where they are used as such or where they serve as matrices for fibers or other load bearing elements. The rigid networks are largely aromatic. Many of them are prepared from multifunctional wholly or almost-wholly aromatic kernels, while others contain large amount of stiff difunctional residus leading to the presence of many main-chain "liquid-crystalline" segments in the "infinite" network.
Author: José-María Lagarón
Publisher: Elsevier
ISBN: 0857092782
Category : Technology & Engineering
Languages : en
Pages : 729
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Book Description
Recent developments in multifunctional and nanoreinforced polymers have provided the opportunity to produce high barrier, active and intelligent food packaging which can help ensure, or even enhance, the quality and safety of packaged foods. Multifunctional and nanoreinforced polymers for food packaging provides a comprehensive review of novel polymers and polymer nanocomposites for use in food packaging. After an introductory chapter, Part one discusses nanofillers for plastics in food packaging. Chapters explore the use of passive and active nanoclays and hidrotalcites, cellulose nanofillers and electrospun nanofibers and nanocapsules. Part two investigates high barrier plastics for food packaging. Chapters assess the transport and high barrier properties of food packaging polymers such as ethylene-norbornene copolymers and advanced single-site polyolefins, nylon-MXD6 resins and ethylene-vinyl alcohol copolymers before going on to explore recent advances in various plastic packaging technologies such as modified atmosphere packaging (MAP), nanoscale inorganic coatings and functional barriers against migration. Part three reviews active and bioactive plastics in food packaging. Chapters investigate silver-based antimicrobial polymers, the incorporation of antimicrobial/antioxidant natural extracts into polymeric films, and biaoctive food packaging strategies. Part four examines nanotechnology in sustainable plastics with chapters examining the food packaging applications of polylactic acid (PLA) nanocomposites, polyhydroxyalkanoates (PHAs), starch-based polymers, chitosan and carragenan polysaccharides and protein-based resins for packaging gluten (WG)-based materials. The final chapter presents the safety and regulatory aspects of plastics as food packaging materials. With its distinguished editor and international team of expert contributors Multifunctional and nanoreinforced polymers for food packaging proves a valuable resource for researchers in packaging in the food industry and polymer scientists interested in multifunctional and nanoreinforced materials. Provides a comprehensive review of novel polymers and polymer nanocomposites for use in food packaging Discusses nanofillers for plastics in food packaging including the use of passive and active nanoclays and hidrotalcites and electrospun nanofibers Investigates high barrier plastics for food packaging assessing recent advances in various plastic packaging technologies such as modified atmosphere packaging (MAP)
Author: Hanmi Xi
Publisher:
ISBN:
Category : Acetylene compounds
Languages : en
Pages : 292
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Book Description
Author: Mohamed Aflal Mohamed Rahmathullah
Publisher:
ISBN:
Category : Addition polymerization
Languages : en
Pages : 600
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Book Description
