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You searched on: Author: jack douglas

Displaying records 181 to 190 of 227 records.
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181. Influence of Generation Number on the Dewetting of Hypergraft Poly(2-Ethyl-2-Oxazoline) Films
Published: 1/1/2000
Authors: K A Barnes, Jack F Douglas, D W. Liu, B B Bauer, Eric J. Amis, Alamgir Karim

182. Lattice Model of Living Polymerization. II: Interplay Between Polymerization and Phase Stability
Published: 1/1/2000
Authors: J Dudowicz, Karl Freed, Jack F Douglas
Abstract: Representative spinodal curves and polymerization lines for the equilibrium polymerization of linear polymers in a solvent have been calculated using aFlory-Huggins type mean-field theory. The calculations are primarily restricted to systems that pol ...

183. Polymer-Surface Interactions in Nanofilled Polymers
Published: 1/1/2000
Authors: Alamgir Karim, Jack F Douglas
Abstract: An understanding of the influence of polymer-surface interactions on the interfacial properties of nanoparticle fillers in polymer matrices is critical for applications of nanoparticle filled polymer materials. The infuence of nanoparticle-surace in ...

184. Preparation and Characterization of Polymer/Dendrimer Blends - Final Report, MAR, 2000
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6506
Published: 1/1/2000
Authors: Eric J. Amis, Barry J. Bauer, Alamgir Karim, Jack F Douglas, A Topp, F I Groehn, T J. Prosa, B D Viers, D W. Liu, K A Barnes, C L. Jackson, G Nisato

185. Suppression of Dewetting in Nanoparticle-Filled Polymer Films
Published: 1/1/2000
Authors: K A Barnes, Alamgir Karim, Jack F Douglas, A Nakatani, H Gruell, Eric J. Amis

186. Dynamic Entropy as a Measure of Caging and Persisent Particle Motion in Supercooled Liquids
Published: 11/1/1999
Authors: P Allegrini, Jack F Douglas, S C Glotzer
Abstract: The length-scale dependence of the dynamic entropy is studied in a molecular dynamics simulation of a binary Lennard-Jones liquid above the mode-coupling critical temperature T^dc^. A number of methods exist for estimating the entropy of dynamical s ...

187. Filler-Induced Composition Waves in Phase-Separating Polymer Blends
Published: 11/1/1999
Authors: B P Lee, Jack F Douglas, S C Glotzer
Abstract: The influence of a dilute concentration of filler particles on polymer blend phase separation is investigated computationally using a generalization of the Cahn-Hilliard-Cook (CHC) theory to include model filler particles (spheres, fibers, platelets) ...

188. Lattice Model of Living Polymerization I. Basic Thermodynamic Properties
Published: 10/1/1999
Authors: J Dudowicz, Karl Freed, Jack F Douglas
Abstract: A Flory-Huggins type model of living polymerization is formulated, incorporating chain stiffness, variable initiator concentration and polymer-polymer interactions. Basic equilibrium properties [average chain length L, average fraction of associated ...

189. Transient Target Patterns in Phase Separating Filled Polymer Blends
Published: 9/1/1999
Authors: Alamgir Karim, Jack F Douglas, G Nisato, D W. Liu, Eric J. Amis
Abstract: Recent simulations have indicated that the presence of filler particles in a phase separating blend can induce the development of composition waves having the symmetry of the filler particles. We investigate these predictions through atomic force mi ...

190. Thermal and Mass Diffusion in a Semidilute Good Solvent-Polymer Solution
Published: 8/1/1999
Authors: K J Zhang, M E Briggs, R W Gammon, J V Sengers, Jack F Douglas
Abstract: The Soret coefficient S^dT^ and collective (mass) diffusion coefficient D^dc^ of polystyrene dissolved in the good solvent toluene is measured over a range of concentrations and molecular weights using an optical beam deflection method. Our measurem ...

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