HOMOGENEOUS NUCLEATION TEMPERATURES FOR CONCENTRATED POLYSTRYENE/BENZENE SOLUTIONS.

Robert Krafft Prud'homme, Walter J. Gregory, Ronald P. Andres

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Scopus citations

Abstract

Homogeneous nucleation temperatures for polystyrene/benzene solutions up to 60 wt% polymer have been measured. For polymer molecular weights from 17,500 to 100,000, homogeneous nucleation temperatures increase with increasing concentration from 226 degree C for pure benzene to 260 degree C for 60 wt% polymer. The experimental results have been compared to the predictions of homogeneous nucleation theory. It is concluded that for these solutions polymers affect the nucleation process principally through their effect on surface tension and solvent vapor pressure. For polystyrene solutions of molecular weight 600,000 or greater, a significant reduction in nucleation temperature was found. This phenomena appears to be caused by phase-separated domains in these high molecular weight solutions.

Original languageEnglish (US)
Title of host publicationJournal of Polymer Science, Polymer Symposia
EditorsRobert L. Miller, Raymond F. Boyer, James K. Rieke
PublisherJohn Wiley & Sons
Pages263-275
Number of pages13
Edition72
ISBN (Print)0471011983
StatePublished - Dec 1 1985

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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