Abstract
The effect of the casting solvents on the morphology and properties of styrene-butadiene-styrene (SBS) triblock copolymer membranes has been investigated. The SBS membranes were prepared by both dry and wet processes. The stress relaxation of the membranes prepared by the dry process was studied. It was found that the stress relaxation of the membrane prepared from tetrahydrofuran (THF) proceeded faster than that of the membrane prepared from the mixed solvent of THF and heptane. This phenomenon could be ascribed to the different membrane morphologies created by the two solvent systems. Three different SBS membrane structures were obtained from three different casting solvents. The results were interpreted based on the miscibility between the solvent and the nonsolvent.
| Original language | English |
|---|---|
| Pages (from-to) | 425-430 |
| Number of pages | 6 |
| Journal | Polymer Engineering and Science |
| Volume | 36 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1996 |