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Displaying records 531 to 540 of 554 records.
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531. 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 ...

532. 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 ...

533. 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 ...

534. 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 ...

535. 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 ...

536. 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 ...

537. 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 ...

538. Transmission In Irradiated Hydroxyethyl Methacrylate Copolymer At Elevated Temperatures
Topic: Polymers
Published: 1/1/2002
Authors: K P Lu, S K Lee, Charles C. Dr. Han

539. Tri-Alpha-Napthyl Benzene as a Crystalline or Glassy Matrix for Matrix-Assisted Laser Desorption/Ionization: A Model System for the Study of Effects of Dispersion of Polymer Samples at a Molecular Level
Topic: Polymers
Published: 1/1/2002
Authors: Barry J. Bauer, Kathleen M. Flynn, Da-Wei Liu, William R. Blair
Abstract: Tri-a-napthyl benzene (TaNB) is used as a matrix in matrix-assisted laser desorption/ionization (MALDI) spectroscopy. Electrosprayed TaNB is crystalline and has a melting point of 180 2 C. After heating above the melting point, TaNB becomes amorp ...

540. Tri-a-naphthylbenzene as a Crystalline or Glassy Matrix for Matrix-Assisted Laser Desorption/Ionization: A Model System for the Study of Effects of Dispersion of Polymer Samples at a Molecular Level
Topic: Polymers
Published: 1/1/2002
Authors: Barry J. Bauer, Charles Martin Guttman, D W. Liu, William R. Blair

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