THERMODYNAMIC PROPERTIES OF MODERATELY CONCENTRATED-SOLUTIONS OF LINEAR-POLYMERS
THERMODYNAMIC PROPERTIES OF MODERATELY CONCENTRATED-SOLUTIONS OF LINEAR-POLYMERS
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DOI：
10.1021/ma50004a042
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发表时间：
1981-01-01
期刊：
影响因子：
5.5
通讯作者：
NAGASAWA, M
中科院分区：
文献类型：
--
作者：
NODA, I;KATO, N;NAGASAWA, M
本文研究了分子量分布较窄、分子量范围较宽的聚α-甲基苯乙烯（α-methylstyrenes，α-methylstyrenes）在中等浓度区的线性聚合物溶液的光散射、蒸气压和渗透压。其中M是分子量，C是聚合物浓度，被发现是线圈重叠程度的通用函数，其由聚合物浓度C与临界浓度C* 的比率定义。在中等浓度的溶液中，当C大于C* 时，/CRT与（C/C*）1· 32®成正比，与des Cloizeaux的标度理论很好地一致。
The osmoticpressure, light scattering, and vapor pressure of linear polymer solutions in the moderately concentrated region were studied for poly (a-methylstyrenes) having sharp molecular weight distributions andcovering a wide range of molecular weight. Thereduced osmotic pressure icMf CRT, where M is the molecular weight and C is the polymer concentration, was found to be a universal function of the degree of coil overlapping, which is defined by the ratio of polymer concentration C to a critical concentration C*. In moderately concentrated solution, where C is larger than C*,/CRT is proportional to (C/C*) 1· 32®, in good agreement with the scaling theory of des Cloizeaux.