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You searched on: Author: jack douglas

Displaying records 171 to 180 of 224 records.
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171. The Dynamics of Confined Polycarbonate Chains Probed with Incoherent Neutron Scattering
Published: 1/1/2001
Authors: Christopher L Soles, Jack F Douglas, Robert M. Dimeo
Abstract: The mean-square atomic displacement of thin (1015 to 75 ) polycarbonate films supported on Si wafers is measured using incoherent elastic neutron scattering. The value of is determined by fitting the scattering intensity data to the D ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851907

172. Determination of the Dielectric Constant of Nanoparticles. I. Dielectric Measurements of Buckminsterfullerene Solutions
Published: 11/1/2000
Authors: Chad R Snyder, Jack F Douglas
Abstract: The static dielectric constant {epsilon} of buckminsterfullerene C^d60^ particles is determined in cis-decalin, toluene, and 1,2-dichlorobenzene using continuum models for spherical and sherical shell inclusions. The value for {epsilon} for isolated ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851739

173. Modification of the Phase Stability of Polymer Blends by Fillers
Published: 11/1/2000
Authors: Alamgir Karim, D W. Liu, Jack F Douglas, A Nakatani, Eric J. Amis
Abstract: We investigate the influence of surface modified filler particles on the phase stability of a model blend of polystyrene (PS) and polybutadiene (PB). The upper critical solution cloud point curve of PS/PB is destabilized (upward shift of critical te ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851736

174. Atomic Force Microscopy Studies of Phase Ordering in Polymer Blends and Clay-Filled Systems
Published: 8/1/2000
Authors: V Ferreiro, Jack F Douglas, Alamgir Karim, G Coulon
Abstract: Many industrial applications require a control of the morphology of thin polymer films. The morphology of thin polymer films depends on many factors : method of formation, tendency of film components to mix or dewet, the crystallization of film comp ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851730

175. Lattice Model of Living Polymerization. III. Evidence for Particle Clustering From Phase Separation Properties and Rounding of the Dynamical Clustering Transition
Published: 7/1/2000
Authors: J Dudowicz, Karl Freed, Jack F Douglas
Abstract: Equilibrium polymerization is studied here as a prototype for clustering transitions that commonly occur in systems of interacting particles at equilibrium. These transitions are often difficult to locate because of transition rounding associated wit ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=852807

176. Preparation and Characterization of Polymer/Dendrimer Blends: Final Report, March 2000
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6506
Published: 3/1/2000
Authors: Eric J. Amis, Barry J. Bauer, A Topp, F Groehn, T J. Prosa, B D Viers, Da-Wei Liu, K A Barnes, C L. Jackson, G Nisato, Alamgir Karim, Jack F Douglas
Abstract: This report is a summary of the results of measurement and characterization on dendritically branched polymers that was done under Army Research Office Grant contract 35109-CH. This summary encompasses 3 previous NISTIR's for consecutive 12 month per ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851721

177. Determination of the Dielectric Constant of Nanoparticles. 1. Dielectric Measurements of Buckminsterfullerene Solutions
Published: 1/1/2000
Authors: Chad R Snyder, Jack F Douglas
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853669

178. 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
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853643

179. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851625

180. 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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851662



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