TRICRITICAL PHENOMENA IN BIMODAL POLYMER-SOLUTIONS - 3-PHASE COEXISTENCE CURVES FOR THE SYSTEM POLYSTYRENE (1) + POLYSTYRENE (2) + METHYLCYCLOHEXANE

被引：40

作者：

SHEN, W ^{[1
]}

SMITH, GR ^{[1
]}

KNOBLER, CM ^{[1
]}

SCOTT, RL ^{[1
]}

机构：

[1] UNIV CALIF LOS ANGELES,DEPT CHEM & BIOCHEM,LOS ANGELES,CA 90024

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1990年 / 94卷 / 20期

关键词：

D O I：

10.1021/j100383a036

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Coexistence curves for the ternary system polystyrene (1) + polystyrene (2) + methylcyclohexane have been determined from measurements of refractive index. The polystyrene fraction of longer chain length was the same in all the measurements (M2 = 929 000), but the shorter chain length fractions were varied (M1 = 13 700, 23 700, 29 400, and 34 000). The coexistence curves (in terms of total mass fraction of polymer) can be fitted to the same extended (classical) theory used in previous studies of quasi-binary hydrocarbon mixtures and can be extrapolated to a tricritical point at M2/M1 = 23 (M1 = 40 000) and 36°C. © 1990 American Chemical Society.

引用

页码：7943 / 7949

页数：7

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