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Search Publications by: Alamgir Karim (Assoc)

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Displaying 101 - 125 of 200

Combinatorial Mapping of Polymer Blends Phase Behavior

January 1, 2003
Author(s)
Alamgir Karim, A Sehgal, Eric J. Amis, J C. Meredith
Methodologies for phase behavior characterization allow for discovery of new models for structure-processing-property relationships in polymer blends. Several recent developments were presented in the combinatorial characterization of polymers blends phase

Combinatorial Mapping of Surface Energy Effects on Diblock Copolymer Thin Film Ordering

January 1, 2003
Author(s)
A P. Smith, A Sehgal, Jack F. Douglas, Alamgir Karim, Eric J. Amis
Combinatorial gradient techniques are used to map the thin film morphology dependence of symmetric diblock copolymers as a function of film thickness and substrate surface energy. An inversion from symmetric to asymmetric lamellar morphology is observed as

Influence of Layered-Silicates on the Phase Separated Morphology of PS

January 1, 2003
Author(s)
K Yurekli, Alamgir Karim, Eric J. Amis, R Krishnamoorti
The influence of added nanometer thick layered-silicates on the phase-separated morphology of a near critical blend of PS and PVME was examined. Thin films of the blend with 0.8 vol % of the nanoscale particles were examined by atomic force microscopy as a

Co-Extrusion of Biocompatible Polymers for Scaffolds With Co-Continuous Morphology

April 1, 2002
Author(s)
N. R. Washburn, Carl Simon Jr., Alessandro Tona, H M. Elgendy, Alamgir Karim, Eric J. Amis
A methodology for the preparation of porous scaffolds for tissue engineering using co-extrusion is presented. Poly(espilon-caprolactone) is blended with poly(ethylene oxide) in a twin-screw extruder to form a two-phase material with micron-sized domains

Combinatorial Methods for Investigations in Polymer Materials Science

April 1, 2002
Author(s)
J C. Meredith, A P. Smith, A J. Crosby, Eric J. Amis, Alamgir Karim
Combinatorial methods of drug discovery in pharmaceuticals research are well known and more recent applications have led to the discovery and synthesis of new inorganic materials, catalysts, and organic polymers. Polymeric coatings play an important role