Phase-morphology Map of Polymer-blend Thin Films Confined to Narrow Strips
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.
Physical Review Letters
Newby, Bi-min Zhang and Composto, R. J., "Phase-morphology Map of Polymer-blend Thin Films Confined to Narrow Strips" (2001). Chemical and Biomolecular Engineering Faculty Research. 25.