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Author : Heléne Magnusson
Publisher :
ISBN 13 : 9789171705259
Total Pages : 41 pages
Book Rating : 4.7/5 (52 download)
Download or read book Hyperbranched Aliphatic Polymers written by Heléne Magnusson and published by . This book was released on 2000 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jacques Roovers
Publisher : Springer Science & Business Media
ISBN 13 : 3540650059
Total Pages : 280 pages
Book Rating : 4.5/5 (46 download)
Download or read book Branched Polymers II written by Jacques Roovers and published by Springer Science & Business Media. This book was released on 1998-12-11 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions by numerous experts
Download or read book Hyperbranched Aliphatic Polyester Via Cross‐Metathesis Polymerization: Synthesis and Postpolymerization Modification written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Deyue Yan
Publisher : John Wiley & Sons
ISBN 13 : 047093476X
Total Pages : 414 pages
Book Rating : 4.4/5 (79 download)
Download or read book Hyperbranched Polymers written by Deyue Yan and published by John Wiley & Sons. This book was released on 2011-05-04 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: A much-needed overview of the state of the art of hyperbranched polymers The last two decades have seen a surge of interest in hyperbranched polymers due to their ease of synthesis on a large scale and their promising applications in diverse fields, from medicine to nanotechnology. Written by leading scientists in academia and industry, this book provides for the first time a comprehensive overview of the topic, bringing together in one complete volume a wealth of information previously available only in articles scattered across the literature. Drawing on their work at the cutting edge of this dynamic area of research, the authors cover everything readers need to know about hyperbranched polymers when designing highly functional materials. Clear, thorough discussions include: How irregular branching affects polymer properties and their potential applications Important theoretical basics, plus a useful summary of characterization techniques How hyperbranched polymers compare with dendrimers as well as linear polymers Future trends in the synthesis and application of hyperbranched polymers Geared to novices and experts alike, Hyperbranched Polymers is a must-have resource for anyone working in polymer architectures, polymer engineering, and functional materials. It is also useful for scientists in related fields who need a primer on the synthesis, theory, and applications of hyperbranched polymers.
Author : Albena Lederer
Publisher : Royal Society of Chemistry
ISBN 13 : 1849733945
Total Pages : 304 pages
Book Rating : 4.8/5 (497 download)
Download or read book Hyperbranched Polymers written by Albena Lederer and published by Royal Society of Chemistry. This book was released on 2015 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by acknowledged experts in the field, the book will appeal to both scientists working in fundamental research, both active and new to the field, as well as industrial manufacturers of dendritic polymers.
Author : Jacques Roovers
Publisher : Springer
ISBN 13 : 3540497803
Total Pages : 280 pages
Book Rating : 4.5/5 (44 download)
Download or read book Branched Polymers II written by Jacques Roovers and published by Springer. This book was released on 2003-07-01 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions by numerous experts
Download or read book Hyperbranched Polyesters for Polyurethane Coatings: Their Preparation, Structure and Crosslinking with Polyisocyanates written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, hyperbranched aromatic polyesters-polyphenols based on 4,4-bis(4' hydroxyƠphenyl)pentanoic acid (BHPPA) were prepared and, according to the authors knowledge, for the first time tested as precursors for polyurethane bulk resins and coatings. Comparison of poly-BHPPA with competing products The materials prepared in this work show better properties than their aliphatic polyester-polyol analoga based on 2,2-bis-(hydroxymethyl)propanoic acid (BHMPA). Especially, the solubility of poly-BHPPA in organic solvents is better and poly-BHPPAs also do not tend to microphase separation during their reaction with isocyanates, in contrast to poly-BHMPAs. The poly-BHPPA and the polyurethane networks made from them display higher Tg values than analogous poly- BHMPA compounds. Because of the high Tg of the reacting and final systems, curing must occur at elevated temperatures (90°C) in order to avoid undercure. The lower reactivity of phenolic OH groups prevents the reaction from being too fast at that temperature. A drawback of the polyurethanes based on the aromatic polyesters-polyols prepared is the lower thermal stability of their urethane bonds, if compared to aliphatic urethanes. An interesting possibility for future investigations would be the modification of the BHPPA monomer in order to change the OH functionality from phenolic to aliphatic OH, e.g. by replacement of the phenolic OH by hydroxymethyl or hydroxyethyl groups (requires a strong modification of the monomer synthesis) or simpler by reacting the phenolic OH of BHPPA with a suitable reagent like oxirane, which would lead to groups like O-CH2-CH2-OH in the place of the phenolic OH. Such a BHPPA modification should in turn yield modified "poly-BHPPA" polycondensates, which would combine the advantages of poly-BHPPA with those of aliphatic OH precursors of polyurethanes. Poly-BHPPA synthesis Hyperbranched polymers of the 4,4-bis-(4'-hydroxyphenyl)pentanoic acid (BHPPA) were synthesized successfully by t.
Author : Ryoko Kita
Publisher :
ISBN 13 :
Total Pages : 164 pages
Book Rating : 4.:/5 (34 download)
Download or read book The Preparation of Hyperbranched Polyethers and Novel Hydrophilic Supports for Solid Phase Synthesis written by Ryoko Kita and published by . This book was released on 2001 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis and Characterization of Hyperbranched Poly(urea-urethane)s written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The thesis aims to synthesize hyperbranched poly(urea-urethane) polymers (HPU) in one-pot method using commercially available monomers which are 2,4-toluylene diisocyanate (TDI) as aromatic diisocyanate and isophorone diisocyanate (IPDI) and 2(3-isocyanatopropyl) cyclohexylisocyanate (IPCI) as aliphatic diisocyanates. Those proposed diisocyanates were reacted with diethanolamine (DEA) or diisopropanolamine (DIPA). Conditions of polymerisation reactions were optimised. Complete structural analysis using 1H and 13C NMR for the obtained aromatic polymers was carried out. Degree of branching up to 70% was calculated. Aliphatic polymers have spectra with overlapped signals therefore, no full structural analysis was possible. Molar masses were determined using SEC/RI detector which shows that the prepared polymers have Mw values between 1600 g/mol and 106000 g/mol. Thermal analysis for different polymer systems showed that aliphatic HPU are more thermally stable and have values of glass transition temperature higher than aromatic ones. Modification of the end groups in the prepared hyperbranched polymers was carried out using three different modifiers and degree of modification up to 100%. Linear polymers based on the same diisocyanate monomers were prepared to compare the properties of hyperbranched systems with their linear analogs. Measurements of solution viscosity showed that HPU have lower solution viscosity values than their linear analogs of comparable molar masses. Rheological measurement of some polymer samples of different systems were carried out and showed that our hyperbranched systems exhibit a more elastic behavior than the linear polymers. Surface studies for thin films prepared from different polymer systems (hyperbranched, linear and modified) were carried out and the obtained thin films were characterized using light microscope, microglider, GC-MS, and AFM. Contact angle measurements showed that HPU have a relatively hydrophilic character. The modified.
Author : Manas Chanda
Publisher : CRC Press
ISBN 13 : 1420080598
Total Pages : 422 pages
Book Rating : 4.4/5 (2 download)
Download or read book Industrial Polymers, Specialty Polymers, and Their Applications written by Manas Chanda and published by CRC Press. This book was released on 2008-07-18 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Derived from the fourth edition of the well-known Plastics Technology Handbook, Industrial Polymers, Specialty Polymers, and Their Applications covers a wide range of general and special types of polymers
Author : Bernhard Rieger
Publisher : Springer Science & Business Media
ISBN 13 : 3642271537
Total Pages : 375 pages
Book Rating : 4.6/5 (422 download)
Download or read book Synthetic Biodegradable Polymers written by Bernhard Rieger and published by Springer Science & Business Media. This book was released on 2012-01-29 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: Salen Metal Complexes as Catalysts for the Synthesis of Polycarbonates from Cyclic Ethers and Carbon Dioxide, by Donald J. Darensbourg.- Material Properties of Poly(Propylene Carbonates), by Gerrit. A. Luinstra and Endres Borchardt.- Poly(3-Hydroxybutyrate) from Carbon Monoxide, by Robert Reichardt and Bernhard Rieger. - Ecoflex® and Ecovio®: Biodegradable, Performance-Enabling Plastics, by K. O. Siegenthaler, A. Künkel, G. Skupin and M. Yamamoto.- Biodegradability of Poly(Vinyl Acetate) and Related Polymers, by Manfred Amann and Oliver Minge.- Recent Developments in Ring-Opening Polymerization of Lactones, by P. Lecomte and C. Jérôme.- Recent Developments in Metal-Catalyzed Ring-Opening Polymerization of Lactides and Glycolides: Preparation of Polylactides, Polyglycolide, and Poly(lactide-co-glycolide), by Saikat Dutta, Wen-Chou Hung, Bor-Hunn Huang and Chu-Chieh Lin.- Bionolle (Polybutylenesuccinate), by Yasushi Ichikawa, Tatsuya Mizukoshi.- Polyurethanes from Renewable Resources, by David A. Babb.-
Author : Mehdi Derradji
Publisher : William Andrew
ISBN 13 : 0128129670
Total Pages : 405 pages
Book Rating : 4.1/5 (281 download)
Download or read book Phthalonitrile Resins and Composites written by Mehdi Derradji and published by William Andrew. This book was released on 2018-04-25 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phthalonitrile Resins and Composites: Properties and Applications summarizes the latest research on these polymers, providing information that enables materials scientists and engineers to deploy these polymers in the real world. The book gives details on synthesis and preparation techniques for key phthalonitrile monomers. All curing techniques are discussed, along with blends and copolymers of phthalonitrile with other polymeric materials, such as epoxy, benzoxazine and bismaleimide. Fiber and particle based phthalonitrile micro and nanocomposites are also discussed, along with their potential applications in lightweight automobiles, ships, oil rigs, aircraft, wind blades, high temperature bearings, valves, battery and electronic casings, fire resistant textiles, and more. - Introduces the subject of phthalonitrile polymers and their composites - Provides precise information on the synthesis, preparation and curing techniques for phthalonitrile polymers - Discusses developments in key application areas that are intended to facilitate and stimulate real world applications of these materials
Author : Masayoshi Higuchi
Publisher : Springer Nature
ISBN 13 : 4431568913
Total Pages : 89 pages
Book Rating : 4.4/5 (315 download)
Download or read book Metallo-Supramolecular Polymers written by Masayoshi Higuchi and published by Springer Nature. This book was released on 2019-11-12 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the synthesis, electrochemical and photochemical properties, and device applications of metallo-supramolecular polymers, new kinds of polymers synthesized by the complexation of metal ions and organic ditopic ligands. Their electrochemical and photochemical properties are also interesting and much different from conventional organic polymers. The properties come from the electronic intra-chain interaction between the metal ions and the ligands in the polymer chain. In this book, for example, the electrochromism that the Fe(II)-based metallo-supramolecular polymer exhibits is described: the blue color of the polymer film disappears by the electrochemical oxidation of Fe(II) ions to Fe(III) and the colorless film becomes blue again by the electrochemical reduction of Fe(III) to Fe(II). The electrochromism is explained by the disappearance/appearance of the metal-to-ligand charge transfer absorption. The electrochromic properties are applicable to display devices such as electronic paper and smart windows.
Author : Xing-Hong Zhang
Publisher : John Wiley & Sons
ISBN 13 : 3527823808
Total Pages : 482 pages
Book Rating : 4.5/5 (278 download)
Download or read book Sulfur-Containing Polymers written by Xing-Hong Zhang and published by John Wiley & Sons. This book was released on 2021-03-23 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: A must-have resource to the booming field of sulfur-containing polymers Sulfur-Containing Polymers is a state-of-the-art text that offers a synthesis of the various sulfur-containing polymers from low-cost sulfur resources such as elemental sulfur, carbon disulfide (CS2), carbonyl sulfide (COS) and mercaptan. With contributions from noted experts on the topic, the book presents an in-depth understanding of the mechanisms related to the synthesis of sulfur-containing polymers. The book also includes a review of the various types of sulfur-containing polymers, such as: poly(thioester)s, poly(thioether)s and poly(thiocarbonate)s and poly(thiourethane)s with linear or hyperbranched (dendrimer) architectures. The expert authors provide the fundamentals on the structure-property relationship and applications of sulfur-containing polymers. Designed to be beneficial for both research and application-oriented chemists and engineers, the book contains the most recent research and developments of sulfur-containing polymers. This important book: Offers the first comprehensive handbook on the topic Contains state-of-the-art research on synthesis of sulfur containing polymers from low-cost sulfur-containing compounds Examines the synthesis, mechanism, structure properties, and applications of various types of sulful-containing polymers Includes contributions from well-known experts Written for polymer chemists, materials scientists, chemists in industry, biochemists, and chemical engineers, Sulfur-Containing Polymers offers a groundbreaking text to the field with inforamtion on the most recent research.
Download or read book Metal Catalyzed Synthesis of Hyperbranched Ethylene And/or .alpha.-olefin Polymers written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Oily hyperbranched polymers derived from ethylene, propylene, butene and/or a C.sub. 5 -C.sub. 24 .alpha.-olefin, and a method for their synthesis, are disclosed. The polymers have non-regular microstructures and are characterized by a ratio ({character pullout})of methyl hydrogens centered around 0.85 ppm on the 1H-NMR spectra of the polymers relative to total aliphatic hydrogens of from about 0.40 to about 0.65 for polymers derived from ethylene or butene, and a ratio ({character pullout})of from greater than 0.50 to about 0.65 for polymers derived from propylene. A method for grafting hyperbranched polymers derived from ethylene, propylene, butene and/or a C.sub. 5 -C.sub. 24 .alpha.-olefin onto aromatic rings in organic molecules and polymers, and the resulting grafted materials, are also disclosed. The hyperbranched polymers and grafted materials are useful, for example, as lubricants and lubricant additives.
Author : D.P.W. Alkema
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (676 download)
Download or read book Synthesis and Evaluation of Antimicrobial Hyperbranched Polymers written by D.P.W. Alkema and published by . This book was released on 2010 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Anjun Qin
Publisher : Royal Society of Chemistry
ISBN 13 : 1782627162
Total Pages : 260 pages
Book Rating : 4.7/5 (826 download)
Download or read book Click Polymerization written by Anjun Qin and published by Royal Society of Chemistry. This book was released on 2018-08-28 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Click Polymerization has been edited by world renowned experts and provides an authoritative guide to this reaction type.
