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Topic Area: Polymers
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Displaying records 521 to 530 of 547 records.
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521. The molecular basis of mesophase ordering in a thiophene-based copolymer
Topic: Polymers
Published: 2/18/2009
Authors: Dean M DeLongchamp, Regis J Kline, Youngsuk Jung, Eric K Lin, Daniel A Fischer, David J Gundlach, Andrew Moad, Lee J Richter, Michael F. Toney, Martin Heeney, Iain McCulloch
Abstract: The carrier mobility of poly(2,5-bis(3-alkylthiophen-2-yl) thieno[3,2-b]thiophene) semiconductors can be substantially enhanced after heating through a thermotropic mesophase transition, which causes a significant improvement in thin film structural ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852781

522. Thermal Expansion Coefficients of Low-K Dielectric Films From Fourier Analysis of X-Ray Reflectivity
Topic: Polymers
Published: 1/1/2000
Authors: Charles E. Bouldin, William E Wallace III, G W Lynn, S C Roth, Wen-Li Wu
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853677

523. Thermal and Flammability Properties of a Silica-Pmma Nanocomposite
Topic: Polymers
Published: 1/1/2000
Authors: Abby W. Morgan, Joseph M Antonucci, Mark R VanLandingham, R H Harris, Takashi Kashiwagi
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853638

524. Thermally Induced Stress Relaxation and Densification of Spin-on-Glass Thin Films
Topic: Polymers
Published: 1/1/2000
Authors: C. K. Chiang, William E Wallace III, G W Lynn, D Feiler, W. Xia
Abstract: The stress-temperature relationship of silica spin-on-glass thin films on silicon wafers was studied. Upon heating the stress-temperature curves showed a dramatically increasing slope when the temperature of the film was greater than 340 C. At 45 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851605

525. Thermodynamic Interactions in Double-Network Hydrogels
Topic: Polymers
Published: 3/11/2008
Authors: Taiki Tominaga, Vijay Tirumala, Sanghun Lee, Eric K Lin, Jian P. Gong, Wen-Li Wu
Abstract: Double-network hydrogels (DN-gels) prepared from the combination of a moderately crosslinked anionic polyelectrolyte and an uncrosslinked linear polymer solution exhibit mechanical properties such as fracture toughness that are intriguingly superior ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852792

526. Thermoreversible Gels from Mixtures of a High-melting Ionic Liquid and a Polar Polymer for Self-Healing Materials
Topic: Polymers
Published: 3/27/2011
Authors: Joonsung (Joonsung) Yoon, Christopher M Stafford
Abstract: We investigate a new kind of PVOH physical gel in which the volatile water is replaced with a non-volatile ionic liquid (IL). High melting IL containing Br- anion was chosen so that the hydrogen-bond accepting Br- can enhance miscibility with PVOH wh ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907159

527. Thickness effect on the viscoelastic properties of polystyrene thin films as measured by thermal wrinkling
Topic: Polymers
Published: 12/29/2010
Authors: Edwin P Chan, Santanu S. Kundu, Qinhuang Lin, Christopher M Stafford
Abstract: The viscoelastic properties of polymer thin films can have a significant impact on the performance in many small-scale devices. In this work, we use thermal wrinkling, which is a phenomenon based on a thermally-initiated instability, to measure visco ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906587

528. Thin Film Solid State Proton NMR Measurements Using A Synthetic Mica Substrate: Polymer Blends
Topic: Polymers
Published: 8/25/2009
Authors: David Lloyd VanderHart, Vivek M Prabhu, Kristopher Lavery, Cindi L Dennis, Ashwin Rao, Eric K Lin
Abstract: We demonstrate that a synthetic fluorophlogopite mica can be used as a proton-free, diamagnetic substrate for examining solid thin-film samples using conventional solid-state proton nuclear magnetic resonance (NMR) experiments. The context of this w ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900180

529. Time-Domain Dielectric Spectroscopy Analysis of the Amorphous Phase in Semicrystalline Polycarbonate
Topic: Polymers
Published: 8/1/1999
Authors: Chad R Snyder, F I. Mopsik, H Marand, S M Sohn
Abstract: The amorphous state of bisphenol-A polycarbonate was examined by time-domain dielectric spectroscopy as a function of crystallization time over a frequency range of 1 x 10^u-4^ Hz to 1 x 10^u4^ Hz. The dielectric measurements were performed in the te ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851636

530. Total free energy governs cell morphology ‹ A possible solution to obtain intrinsic cell modulus
Topic: Polymers
Published: 9/26/2013
Authors: Martin Y Chiang, Yanzi Yangben , Nancy J Lin, Li Yang
Abstract: Cells adjust their morphology in response to physical and chemical interactions with their environment. In this report, we deem that the fundamental nature of free energies associated with cell/substrate interactions regulates adherent cell morpholog ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909671



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