Microstructural Characterization Of Polymers By Positron Lifetime Spectroscopy PDF Download
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Author | : Jag J. Singh |
Publisher | : |
Total Pages | : 6 |
Release | : 1996 |
Genre | : |
ISBN | : |
Download Microstructural Characterization of Polymers by Positron Lifetime Spectroscopy Book in PDF, ePub and Kindle
Author | : Jag J. Singh |
Publisher | : |
Total Pages | : 12 |
Release | : 1993 |
Genre | : Coatings |
ISBN | : |
Download Positron Lifetime Spectroscopy for Investigation of Thin Polymer Coatings Book in PDF, ePub and Kindle
Author | : National Aeronautics and Space Adm Nasa |
Publisher | : Independently Published |
Total Pages | : 38 |
Release | : 2019 |
Genre | : Science |
ISBN | : 9781792859113 |
Download Microstructural Characterization of Semi-Interpenetrating Polymer Networks by Positron Lifetime Spectroscopy Book in PDF, ePub and Kindle
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...
Author | : Jag J. Singh |
Publisher | : |
Total Pages | : 24 |
Release | : 1996 |
Genre | : Polyimides |
ISBN | : |
Download Microstructural Characterization of Semi-Interpenetrating Polymer Networks by Positron Lifetime Spectroscopy Book in PDF, ePub and Kindle
Author | : Qin Deng |
Publisher | : |
Total Pages | : 320 |
Release | : 1993 |
Genre | : Polymers |
ISBN | : |
Download Characterization of Free-volume Properties in Polymers by Positron Annihilation Spectroscopy Book in PDF, ePub and Kindle
Author | : Wiley |
Publisher | : John Wiley & Sons |
Total Pages | : 987 |
Release | : 2008-02-08 |
Genre | : Technology & Engineering |
ISBN | : 0470233001 |
Download Characterization and Analysis of Polymers Book in PDF, ePub and Kindle
Based on Wiley's renowned Encyclopedia of Polymer Science and Technology, this book provides coverage of key methods of characterization of the physical and chemical properties of polymers, including atomic force microscopy, chromatographic methods, laser light scattering, nuclear magnetic resonance, and thermal analysis, among others. Written by prominent scholars from around the world, this reference presents over twenty-five self -contained articles on the most used analytical techniques currently practiced in polymer science.
Author | : |
Publisher | : |
Total Pages | : 180 |
Release | : 1997 |
Genre | : Aeronautics |
ISBN | : |
Download NASA Technical Memorandum Book in PDF, ePub and Kindle
Author | : Dan Campbell |
Publisher | : CRC Press |
Total Pages | : 492 |
Release | : 2017-12-21 |
Genre | : Technology & Engineering |
ISBN | : 1482268361 |
Download Polymer Characterization Book in PDF, ePub and Kindle
Discerning the properties of polymers and polymer-based materials requires a good understanding of characterization. This revised and updated text provides a comprehensive survey of characterization methods within its simple, concise chapters. Polymer Characterization: Physical Techniques, provides an overview of a wide variety of characterization methods, which makes it an excellent textbook and reference. It starts with a description of basic polymer science, providing a solid foundation from which to understand the key physical characterization techniques. The authors explain physical principles without heavy theory and give special emphasis to the application of the techniques to polymers, with plenty of illustrations. Topics covered include molecular weight determination, molecular and structural characterization by spectroscopic techniques, morphology and structural characterization by microscopy and diffraction, and thermal analysis. This edition contains a new chapter on surface analysis as well as some revised problems and solutions. The concise treatment of each topic offers even those with little prior knowledge of the subject an accessible source to relevant, simple descriptions in a well-organized format.
Author | : Ronghai Wang |
Publisher | : |
Total Pages | : 210 |
Release | : 1992 |
Genre | : |
ISBN | : |
Download Positron Lifetime Spectroscopy on Selected Polymers Book in PDF, ePub and Kindle
Author | : United States. National Aeronautics and Space Administration |
Publisher | : |
Total Pages | : 492 |
Release | : 1990 |
Genre | : Aeronautics |
ISBN | : |
Download NASA Technical Paper Book in PDF, ePub and Kindle