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Polyurethane Chemistry

Polyurethane Chemistry
Author: Ram K. Gupta
Publisher:
Total Pages:
Release: 2021
Genre: Polyurethanes
ISBN: 9780841298408

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"This book is about Polyurethane Chemistry: Renewable Polyols and Isocyanates"--


Advances in Polymer Synthesis

Advances in Polymer Synthesis
Author: Bill M. Culbertson
Publisher: Springer Science & Business Media
Total Pages: 553
Release: 2012-12-06
Genre: Science
ISBN: 1461321212

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"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.


Eco-Friendly Waterborne Polyurethanes

Eco-Friendly Waterborne Polyurethanes
Author: Ram K. Gupta
Publisher: CRC Press
Total Pages: 457
Release: 2022-01-24
Genre: Technology & Engineering
ISBN: 1000532879

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The polyurethane industry is among the fastest growing, with polyurethanes used in consumer as well as industrial sectors. Waterborne polyurethanes (WPUs) exhibit many advantages over conventional volatile organic compounds (VOCs) based polyurethanes and have emerged as an environmentally friendly alternative. WPUs offer an opportunity to use sustainable raw materials to produce environmentally sustainable polymers, particularly, polyols derived from vegetable oils. Eco-Friendly Waterborne Polyurethanes: Synthesis, Properties, and Applications provides state-of-the-art knowledge of the synthesis, application, and property enhancement of WPUs. Covers various types of eco-friendly materials and technologies used to synthesize WPUs Presents an overview and applications of WPUs in several advanced research areas Provides fundamentals of synthetic processes and their chemistries for specific applications Elaborates on advanced approaches used to convert renewable resources into polymers Offers new direction to scientists, researchers, and students to better understand the chemistry, technologies, and applications Written for polymer chemists, materials scientists, and other researchers and industry, this book serves as a comprehensive reference for readers interested in the development and application of sustainable polymers.


Synthesis and Physical Properties of Poly(Perfluoroalkylether)Urethanes

Synthesis and Physical Properties of Poly(Perfluoroalkylether)Urethanes
Author:
Publisher:
Total Pages: 44
Release: 1989
Genre:
ISBN:

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Polyurethane block copolymers were synthesized containing 33 and 50 wt% soft segment, and hard segment based on 4,4-diphenylmethane dissocyanate (MDI) chain extender. The soft segments were mixtures of poly(tetramethylene oxide) (PTMO) and poly(perfluoroalkylether) (PFEG) glycols (Mn=1000 and 1900, respectively), ranging from 4 to 100wt% PFEG. The PMTO polyol in one sample was substituted with a PMTO/ethylene oxide polyol (75:25 mole ratio) (Mn=1140). The MDEA-extended polymer was ionized using 1,3-propane sultone. The morphology, bulk, and surface properties of these polymers were evaluated by a variety of techniques. Differential scanning calorimetry and dynamic mechanical analysis showed that the incorporation of PFEG into the soft segment phase slightly enhanced the degree of phase separation. Polyurethanes; Poly(perfluoroalkylether); Mixed soft segment; Polymers; Organic chemistry.


Linear Polyurethanes

Linear Polyurethanes
Author: Piotr Krol
Publisher: CRC Press
Total Pages: 272
Release: 2008-03-27
Genre: Science
ISBN: 9004188169

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This volume describes in detail the mechanisms of the diisocyanates and polyols polyaddition process as well as its kinetic and process aspects important for obtaining linear polyurethanes. General kinetics of the process and its experimental verification, using GPC chromatography as well as NMR spectroscopy and MALDI-ToF spectrometry, are presente


Physical Properties of Lipids

Physical Properties of Lipids
Author: Alejandro G. Marangoni
Publisher: CRC Press
Total Pages: 565
Release: 2002-03-04
Genre: Science
ISBN: 0203909178

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Provides in-depth coverage of the physical properties of fats and oils. Includes surface and theological characteristics as well as crystallization and phase behavior for improved nutrition and functionality in the design of new food products.


Academy of Sciences, Ukrainian Ssr. Synthesis and Physical Chemistry of Polymers; Polyurethanes (selected Articles).

Academy of Sciences, Ukrainian Ssr. Synthesis and Physical Chemistry of Polymers; Polyurethanes (selected Articles).
Author: L. V. Stepanenko
Publisher:
Total Pages: 29
Release: 1969
Genre:
ISBN:

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Contents: Linear polyurethanes with isocyanurate cycles in chain; The change of internal energy during high elastic deformation of polyurethanes.


Polyurethane Elastomers

Polyurethane Elastomers
Author: C. Hepburn
Publisher: Springer Science & Business Media
Total Pages: 458
Release: 2012-12-06
Genre: Technology & Engineering
ISBN: 940112924X

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The aim of this monograph has been to distil into a single volume, in an easily read and assimilated format, the essentials of this often complex technology such that it is usable by all technical and semi-technical people who wish to become their own polyurethane and polyurethane elastomer expert.