Microstructural Characterization Of Semi Interpenetrating Polymer Networks By Positron Lifetime Spectroscopy

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Microstructural Characterization of Semi-Interpenetrating Polymer Networks by Positron Lifetime Spectroscopy

Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
ISBN 13 : 9781792859113
Total Pages : 38 pages
Book Rating : 4.8/5 (591 download)

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Book Synopsis Microstructural Characterization of Semi-Interpenetrating Polymer Networks by Positron Lifetime Spectroscopy by : National Aeronautics and Space Adm Nasa

Download or read book Microstructural Characterization of Semi-Interpenetrating Polymer Networks by Positron Lifetime Spectroscopy written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2019 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermoset and thermoplastic polyimides have complementary physical and mechanical properties. Whereas thermoset polyimides are brittle and generally easier to process, thermoplastic polyimides are tough but harder to process. A combination of these two types of polyimides may help produce polymers more suitable for aerospace applications. Semi-Interpenetrating Polymer Networks (S-IPN) of thermoset LaRC(TM)-RP46 and thermoplastic LaRC(TM)-IA polyimides were prepared in weight percent ratios ranging from 100:0 to 0:100. Positron lifetime measurements were made in these samples to correlate their free volume features with physical and mechanical properties. As expected, positronium atoms are not formed in these samples. The second lifetime component has been used to infer the positron trap dimensions. The 'free volume' goes through a minimum at a ratio of about 50:50, and this suggests that S-IPN samples are not merely solid solutions of the two polymers. These data and related structural properties of the S-IPN samples are discussed. Singh, Jag J. and Pater, Ruth H. and Eftekhari, Abe NASA-TP-3617, NAS 1.60:3617, L-17576 RTOP 505-63-50-01...

Microstructural Characterization of Semi-Interpenetrating Polymer Networks by Positron Lifetime Spectroscopy

Author : Jag J. Singh
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Microstructural Characterization of Semi-Interpenetrating Polymer Networks by Positron Lifetime Spectroscopy by : Jag J. Singh

Download or read book Microstructural Characterization of Semi-Interpenetrating Polymer Networks by Positron Lifetime Spectroscopy written by Jag J. Singh and published by . This book was released on 1996 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Microstructural Characterization of Polymers by Positron Lifetime Spectroscopy

Author : Jag J. Singh
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (99 download)

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Book Synopsis Microstructural Characterization of Polymers by Positron Lifetime Spectroscopy by : Jag J. Singh

Download or read book Microstructural Characterization of Polymers by Positron Lifetime Spectroscopy written by Jag J. Singh and published by . This book was released on 1996 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Positron Lifetime Spectroscopy for Investigation of Thin Polymer Coatings

Author : Jag J. Singh
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Positron Lifetime Spectroscopy for Investigation of Thin Polymer Coatings by : Jag J. Singh

Download or read book Positron Lifetime Spectroscopy for Investigation of Thin Polymer Coatings written by Jag J. Singh and published by . This book was released on 1993 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

NASA Technical Memorandum

Author :
Publisher :
ISBN 13 :
Total Pages : 180 pages
Book Rating : 4.F/5 ( download)

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Download or read book NASA Technical Memorandum written by and published by . This book was released on 1997 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

NASA Langley Scientific and Technical Information Output: 1998

Author :
Publisher :
ISBN 13 :
Total Pages : 166 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis NASA Langley Scientific and Technical Information Output: 1998 by :

Download or read book NASA Langley Scientific and Technical Information Output: 1998 written by and published by . This book was released on 1999 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

NASA Langley Scientific and Technical Information Output: 1996

Author :
Publisher :
ISBN 13 :
Total Pages : 180 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis NASA Langley Scientific and Technical Information Output: 1996 by :

Download or read book NASA Langley Scientific and Technical Information Output: 1996 written by and published by . This book was released on 1997 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Chemical Abstracts

Author :
Publisher :
ISBN 13 :
Total Pages : 2018 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Chemical Abstracts by :

Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2018 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Research and Technology Highlights 1995

Author :
Publisher :
ISBN 13 :
Total Pages : 154 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Research and Technology Highlights 1995 by :

Download or read book Research and Technology Highlights 1995 written by and published by . This book was released on 1996 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Characterization of Thermotropic Liquid Crystalline Polymer Blends by Positron Annihilation Lifetime Spectroscopy

Author : Naslund Robert Alec
Publisher :
ISBN 13 :
Total Pages : 324 pages
Book Rating : 4.:/5 (258 download)

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Book Synopsis Characterization of Thermotropic Liquid Crystalline Polymer Blends by Positron Annihilation Lifetime Spectroscopy by : Naslund Robert Alec

Download or read book Characterization of Thermotropic Liquid Crystalline Polymer Blends by Positron Annihilation Lifetime Spectroscopy written by Naslund Robert Alec and published by . This book was released on 1992 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Characterization of Interpenetrating Polymer Networks

Author : Cheryl Mary Robson
Publisher :
ISBN 13 :
Total Pages : 42 pages
Book Rating : 4.:/5 (199 download)

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Book Synopsis Characterization of Interpenetrating Polymer Networks by : Cheryl Mary Robson

Download or read book Characterization of Interpenetrating Polymer Networks written by Cheryl Mary Robson and published by . This book was released on 1989 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Unsaturated Polyester Resins

Author : Sabu Thomas
Publisher : Elsevier
ISBN 13 : 0128163038
Total Pages : 656 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Unsaturated Polyester Resins by : Sabu Thomas

Download or read book Unsaturated Polyester Resins written by Sabu Thomas and published by Elsevier. This book was released on 2019-07-11 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unsaturated Polyester Resins: Fundamentals, Design, Fabrication, and Applications explains the preparation, techniques and applications relating to the use of unsaturated polyester resin systems for blends, interpenetrating polymer networks (IPNs), gels, composites and nanocomposites, enabling readers to understand and utilize the improved material properties that UPRs facilitate. Chapters cover unsaturated polyester resins and their interaction at the macro, micro and nano levels, in-depth studies on the properties and analysis of UPR based materials, and the applications of UPR based composites, blends, IPNs and gels across a range of advanced commercial and industrial fields. This is a highly detailed source of information on unsaturated polyester resins, supporting academics, researchers and postgraduate students working with UPRs, polyesters, polymeric or composite materials, polymer chemistry, polymer physics, and materials science, as well as scientists, R&D professionals and engineers in industry. Covers the use of unsaturated polyester resin systems for blends, IPNs, gels, composites and nanocomposites Presents cutting-edge techniques for the analysis and improvement of properties of advanced UPR-based materials Unlocks the potential of unsaturated polyester resins in high-performance materials for a range of advanced applications

Engineered Materials Abstracts

Author :
Publisher :
ISBN 13 :
Total Pages : 658 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Engineered Materials Abstracts by :

Download or read book Engineered Materials Abstracts written by and published by . This book was released on 1995-04 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Characterization of Polymer Blends

Author : Sabu Thomas
Publisher : John Wiley & Sons
ISBN 13 : 3527331530
Total Pages : 972 pages
Book Rating : 4.5/5 (273 download)

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Book Synopsis Characterization of Polymer Blends by : Sabu Thomas

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.

Advanced Polymers Abstracts

Author :
Publisher :
ISBN 13 :
Total Pages : 736 pages
Book Rating : 4.3/5 (91 download)

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Download or read book Advanced Polymers Abstracts written by and published by . This book was released on 1996 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Spectroscopy of Polymer Nanocomposites

Author : Sabu Thomas
Publisher : William Andrew
ISBN 13 : 0323413919
Total Pages : 500 pages
Book Rating : 4.3/5 (234 download)

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Book Synopsis Spectroscopy of Polymer Nanocomposites by : Sabu Thomas

Download or read book Spectroscopy of Polymer Nanocomposites written by Sabu Thomas and published by William Andrew. This book was released on 2016-02-16 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spectroscopy of Polymer Nanocomposites covers all aspects of the spectroscopic characterization of polymer nanocomposites. More than 25 spectroscopy characterization techniques – almost all used in materials science – are treated in the book, with discussion of their potentialities and limitations. By comparing the techniques with each other and presenting the techniques together with their specific application areas, the book provides scientists and engineers the information needed for solving specific problems and choosing the right technique for analyzing the material structure. From this, the dispersion structure of fillers, property relations and filler-polymer interactions can be determined, and, ultimately, the right materials can be chosen for the right applications. Besides the techniques and structure-property relations, aspects covered include: phase segregation of filler particles, filler agglomeration and deagglomeration, filler dispersion, filler-polymer interactions, surfaces and interfaces. The book also examines recent developments, as well as unresolved issues and new challenges, in the characterization of surfaces and interfaces in polymer nanocomposites. This handpicked selection of topics, and the combined expertise of contributors from industry, academia, government and private research organizations across the globe, make this survey an outstanding reference source for anyone involved in the field of polymer nanocomposites in academia or industry. Provides comprehensive coverage of spectroscopy techniques for analyzing polymer nanocomposites Enables researchers and engineers to choose the right technique and make better materials decisions in research and a range of industries Presents the fundamentals, information on structure-property relations, and all other aspects relevant for understanding spectroscopic analyses of nanoreinforced polymers and their applications

Active Protective Coatings

Author : Anthony E. Hughes
Publisher : Springer
ISBN 13 : 9401775400
Total Pages : 429 pages
Book Rating : 4.4/5 (17 download)

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Book Synopsis Active Protective Coatings by : Anthony E. Hughes

Download or read book Active Protective Coatings written by Anthony E. Hughes and published by Springer. This book was released on 2016-03-01 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers a broad range of materials science that has been brought to bear on providing solutions to the challenges of developing self-healing and protective coatings for a range of metals. The book has a strong emphasis on characterisation techniques, particularly new techniques that are beginning to be used in the coatings area. It features many contributions written by experts from various industrial sectors which examine the needs of the sectors and the state of the art. The development of self-healing and protective coatings has been an expanding field in recent years and applies a lot of new knowledge gained from other fields as well as other areas of materials science to the development of coatings. It has borrowed from fields such as the food and pharmaceutical industries who have used, polymer techniques, sol-gel science and colloidosome technology for a range encapsulation techniques. It has also borrowed from fields like hydrogen storage such as from the development of hierarchical and other materials based on organic templating as “nanocontainers” for the delivery of inhibitors. In materials science, recent developments in high throughput and other characterisation techniques, such as those available from synchrotrons, are being increasing used for novel characterisation – one only needs to look at the application of these techniques in self healing polymers to gauge wealth of new information that has been gained from these techniques. This work is largely driven by the need to replace environmental pollutants and hazardous chemicals that represent risk to humans such as chromate inhibitors which are still used in some applications.