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The effect of molecular weight and temperature on phase separation in the ternary system polystyrene/polybutadiene/tetralin

โœ Scribed by Dennis G. Welygan; Charles M. Burns

Publisher
John Wiley and Sons
Year
1974
Tongue
English
Weight
347 KB
Volume
18
Category
Article
ISSN
0021-8995

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โœฆ Synopsis

The phase diagram and cloud point surface for the ternary system polystyrene/polybutadiene/tetralin were determined a t 29", 87", and 143ยฐC. Polystyrenes and polybutadienes of narrow molecular weight distribution were used to study the effect of molecular weight on the cloud point concentration. The phase diagram obtained was bimodal. This unusual shape was more pronounced a t higher molecular weights. A model describing the molecular weight dependence of the cloud point concentration was tested and found to hold over a wide composition and temperature range.

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