Miscibility And Structure Property Relationships In Some Novel Polyolefins
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Miscibility And Structure Property Relationships In Some Novel Polyolefins
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Author : Akshay R. Kamdar
language : en
Publisher:
Release Date : 2009
Miscibility And Structure Property Relationships In Some Novel Polyolefins written by Akshay R. Kamdar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Adhesion categories.
In the first chapter, miscibility of homogeneous propylene/ethylene (P/E) copolymers of relatively narrow molecular weight distribution was studied as a function of constituent comonomer content. Polymers with up to 31 mol% ethylene were blended in pairs in order to vary the comonomer content difference. Copolymers of molecular weight about 200 kg/mol were miscible if the difference in ethylene content was less than about 18 mol%, and immiscible if the ethylene content difference was greater than about 20 mol%. Blends with constituent composition difference in the range of 18 20 mol% exhibited partial miscibility in the melt. In the second chapter, the effect of chain microstructure on the miscibility and phase behavior of ethylene-octene (EO) copolymer blends was studied. Binary blends of two statistical copolymers (EO/EO blends) that differed in comonomer content were compared with blends of an EO with an olefinic blocky ethylene-octene copolymer, OBC (EO/OBC blends). Two EOs of molecular weight about 100 kg/mol were miscible if the difference in octene content was less than about 10 mol% and immiscible if the octene content difference was greater than about 13 mol%. The blocky nature of the OBCs reduced the miscibility and broadened the partial miscibility window of EO/OBC blends compared to EO/EO blends. The EO/OBC blends were miscible if the octene content difference was less than 7 mol% and immiscible above 13 mol% octene content difference. In the third chapter, the adhesion of some ethylene-octene copolymers to polypropylene (PP) and high density polyethylene (HDPE) was studied in order to evaluate their suitability as compatibilizers for PP/HDPE blends. A one-dimensional model of the compatibilized blend was fabricated by layer-multiplying coextrusion. The microlayered tapes consisted of many alternating layers of PP and HDPE with a thin tie-layer inserted at each interface. The thickness of the tie-layer varied from 0.1 to 14 microns, which included thicknesses comparable to those of the interfacial layer in a compatibilized blend. A blocky copolymer (OBC) consistently exhibited better adhesion to PP than statistical copolymers (EO). Inspection of the crack-tip damage zone revealed a change from a continuous plastic damage zone in tie-layers 2 microns or thicker to a highly fibrillated damage zone in thinner tie-layers.
Structure Property Relationships In Some Novel Polyolefins
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Author : Peter Simon Dias
language : en
Publisher:
Release Date : 2008
Structure Property Relationships In Some Novel Polyolefins written by Peter Simon Dias and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Structure Property Relationships In Model Polyolefins
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Author : Peter Andrew Weimann
language : en
Publisher:
Release Date : 1998
Structure Property Relationships In Model Polyolefins written by Peter Andrew Weimann and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.
Miscibility Structure Property Relationships And Crystallization Kinetics Of Ethylene Copolymers
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Author : Catherine Honor Stephens
language : en
Publisher:
Release Date : 2004
Miscibility Structure Property Relationships And Crystallization Kinetics Of Ethylene Copolymers written by Catherine Honor Stephens and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
Structure Property Relationships In Polyolefins
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Author : Cristian Eugen Hedesiu
language : en
Publisher:
Release Date : 2007
Structure Property Relationships In Polyolefins written by Cristian Eugen Hedesiu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
Structure Property Relationships In Polymers
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Author : Charles E. Carraher Jr.
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Structure Property Relationships In Polymers written by Charles E. Carraher Jr. and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
The first concern of scientists who are interested in synthetic polymers has always been, and still is: How are they synthesized? But right after this comes the question: What have I made, and for what is it good? This leads to the important topic of the structure-property relations to which this book is devoted. Polymers are very large and very complicated systems; their character ization has to begin with the chemical composition, configuration, and con formation of the individual molecule. The first chapter is devoted to this broad objective. The immediate physical consequences, discussed in the second chapter, form the basis for the physical nature of polymers: the supermolecular interactions and arrangements of the individual macromolecules. The third chapter deals with the important question: How are these chemical and physical structures experimentally determined? The existing methods for polymer characterization are enumerated and discussed in this chapter. The following chapters go into more detail. For most applications-textiles, films, molded or extruded objects of all kinds-the mechanical and the thermal behaviors of polymers are of pre ponderant importance, followed by optical and electric properties. Chapters 4 through 9 describe how such properties are rooted in and dependent on the chemical structure. More-detailed considerations are given to certain particularly important and critical properties such as the solubility and permeability of polymeric systems. Macromolecules are not always the final goal of the chemist-they may act as intermediates, reactants, or catalysts. This topic is presented in Chapters 10 and 11.
Encyclopedia Of Polymer Blends Volume 3
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Author : Avraam I. Isayev
language : en
Publisher: John Wiley & Sons
Release Date : 2016-06-07
Encyclopedia Of Polymer Blends Volume 3 written by Avraam I. Isayev and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-06-07 with Science categories.
A complete and timely overview of the topic, this Encyclopedia imparts knowledge of fundamental principles and their applications for academicians, scientists and researchers, while informing engineers, industrialists and entrepreneurs of the current state of the technology and its utilization. The most comprehensive source on polymer blends available on the market Offers a complete and timely overview of the topic Each article presents up to date research & development on a topic and its basic principles and applications, integrates case studies, laboratory and pilot plant experiments, and gives due reference to published and patented literature Equips academics, scientists and researchers with knowledge of fundamentals principles and their applications, and informs the engineers, industrialists and entrepreneurs about the state of the art technology and its applications
Advances In Polyolefin Nanocomposites
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Author : Vikas Mittal
language : en
Publisher: CRC Press
Release Date : 2010-12-07
Advances In Polyolefin Nanocomposites written by Vikas Mittal and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-12-07 with Technology & Engineering categories.
With the advent of polymer nanocomposites, research on polyolefin nanocomposites has grown exponentially. Correcting the deficiency of a meaningful text on these important materials, Advances in Polyolefin Nanocomposites:Sums up recent advances in nanoscale dispersion of filler in polyolefinsPresents a basic introduction to polyolefin nanocomposite
Engineered Materials Abstracts
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Author :
language : en
Publisher:
Release Date : 1995-10
Engineered Materials Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995-10 with Ceramic materials categories.
Polymer Blends Handbook
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Author : L. A. Utracki
language : en
Publisher:
Release Date : 2014-01-31
Polymer Blends Handbook written by L. A. Utracki and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-01-31 with Polymer engineering categories.
Written by an international group of highly respected contributors, this fundamental reference work covers all aspects of polymer blends: science, engineering, technology and applications.