Chemical and Biomolecular Engineering Faculty Research

Title

Phase-morphology Map of Polymer-blend Thin Films Confined to Narrow Strips

Document Type

Article

Publication Date

8-27-2001

Abstract

Upon lateral confinement, a critical polymer-blend film at 200 degreesC has been directed to form tube, capsule, confined domain, and multiple domain configurations. A phase-morphology map is produced by varying the confinement width (W) and film thickness (h(0)), and interpreted using a single pore model. Using the known correlation length, capsule length, and W, the boundary, in terms of W/h(0), between configurations is predicted and found to be in good agreement with experiment. This morphology map has potential applications for microencapsulating drugs and self-assembled conducting wires.

Publication Title

Physical Review Letters

Volume

87

Issue

9

Last Page

98302