The relationship between the polymer molecular weight and the electro-optical properties was investigated for the polymer/liquid crystal (LC) composite film prepared by a solvent-induced phase separation method. Poly(methyl methacrylate) (PMMA) and poly(diisopropyl fumarate) (Pdi-iPF) with significantly different weight-average molecular weight (Mw) were used as the matrix for the Polymer/LC composite film. It is confirmed from morphological observation by scanning electron microscope (SEM) that the size of LC channel or domain was strongly dependent on Mw of PMMA and Pdi-ipF. With increasing Mw in PMMA/LC composite film, the switching hysteresis was decreased due to a decrease of the compatibility at the polymer-LC interface. The hysteresis in (Pdi-iPF/LC) composite film was not detected for electro-optical switching and this result is not changed with Mw of Pdi-iPF.
|Number of pages||7|
|Journal||Journal of Industrial and Engineering Chemistry|
|Publication status||Published - 1998|
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)