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Topic Area: Polymers

Displaying records 521 to 530 of 537 records.
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521. Small-Angle Neutron Scattering of Solutions of Arborescent Graft Polystyrenes
Topic: Polymers
Published: 1/1/1999
Authors: S M Choi, R M Briber, Barry J. Bauer, A Topp, M Gauthier, L Tichagwa
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853689

522. Spin-on-Glass Thin Films Prepared From a Novel Polysilsesquioxane by Thermal and Ultraviolet-Irradiation Methods
Topic: Polymers
Published: 1/1/1999
Authors: Q Pan, G B Gonzalez, R J Composto, William E Wallace III, B Arkles, L K Figge, D H Berry
Abstract: The pyrolytic and photolytic conversion of a new polymer precursor, namely -chloroethyl-silsesquioxane (BCESSQ), to an ormosil film is presented. At 350 C the film thickness rapidly decays to 55% of its original thickness within 60 min. A range of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851493

523. Statistical Analysis of NIST Interlaboratory Comparison of Polystyrene Molecular Mass Distribution Obtained by MALDI TOF MS
Topic: Polymers
Published: 1/1/1999
Authors: S Wetzel, Charles Martin Guttman, Kathleen M. Flynn
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853725

524. Stress Relaxation of Poly(Ethylene Naphthalate): Isothermal, Isochronal, and Isostructural Responses
Topic: Polymers
Published: 1/1/1999
Authors: M L Cerrada, G B. McKenna
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853688

525. Study of Aggregates of Fullerene-Based Ionomers in Aqueous Solutions Using Small Angle Neutron and X-ray Scattering
Topic: Polymers
Published: 1/1/1999
Authors: U Jeng, T L Lin, C S Tsao, C H Lee, T Canteenwala, L Y Wang, L Y Chiang, Charles C. Dr. Han
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853701

526. The Effects of Steady Shear on the Order and Orientation of a Diblock Copolymer Melt using In-Situ Small-Angle Neutron Scattering
Topic: Polymers
Published: 1/1/1999
Authors: K A Barnes, F A Morrison, A Nakatani, J W Mays
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853684

527. Evolution of Microstructure in the Liquid and Crystal Directions in a Quenched Block Copolymer Melt and Its Implication on Phase Transition Mechanisms
Topic: Polymers
Published: 11/1/1998
Authors: N P Balsara, B A Garetz, M C Newstein, Barry J. Bauer, T J. Prosa
Abstract: Evolution of the disorder-to-order transition within a block copolymer is studied by the thermal quenching of samples from the melt to an ordered state. The ordered state consists of cylinders arranged on a hexagonal lattice and has liquid crystallin ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851467

528. Molecular Structure of Silsesquioxanes Determined by Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry
Topic: Polymers
Published: 11/1/1998
Authors: William E Wallace III, Charles Martin Guttman, Joseph M Antonucci
Abstract: Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry was used to deduce the three-dimensional structure of a complex silsesquioxane polymer. Four distinct levels of structure were observed in the mass spectrum. The overall ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851481

529. Limitations on Distinguishing Between Representations of Relaxation Data Over Narrow Frequency Ranges
Topic: Polymers
Published: 10/1/1998
Authors: Chad R Snyder, F I. Mopsik
Abstract: In this article, we examine the ability to distinguish between relaxation functions with data over limited range of frequency. It is demonstrated that over these limited frequency ranges under a variety of conditions, the Cole-Cole equation can be us ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851384

530. Interface Adhesion of E-Glass Fibers in Model Polyisocyanurate Networks
Topic: Polymers
Published: 9/23/1998
Authors: Walter G McDonough, Gale Antrus Holmes, R C Peterson
Abstract: Recent work examining the nature of the failure process of glass/epoxy specimens in the single fiber fragmentation test showed that the matrix exhibited pronounced non-linear viscoelastic behavior during the test, and that the interfacial shear stren ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851475



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