引用本文:
江明, 李文俊. 聚苯乙烯-丁酮-正己烷体系稀溶液性质的研究[J]. 高分子学报,
1964, 6(5): 356-362.
Citation: KIANG MING, LI WEIN-TSIN. STUDIES OF THE DILUTE SOLUTION PROPERTIES OFPOLYSTYRENE-METHYLETHYLKETONE-HEXANE SYSTEM[J]. Acta Polymerica Sinica, 1964, 6(5): 356-362.
Citation: KIANG MING, LI WEIN-TSIN. STUDIES OF THE DILUTE SOLUTION PROPERTIES OFPOLYSTYRENE-METHYLETHYLKETONE-HEXANE SYSTEM[J]. Acta Polymerica Sinica, 1964, 6(5): 356-362.
聚苯乙烯-丁酮-正己烷体系稀溶液性质的研究
摘要:
测定了五个聚苯乙烯级分(Mη3.2×105—2.7×106)在丁酮-正己烷体系中的特性粘数,发现高分子量级分的特性粘数-组成曲綫在γ=0.13处出现极大值。简要叙述了自制光电式散射光度计的结构。聚苯乙烯级分在上述混合溶剂体系内光散射测定的结果表明,A2也在γ=0.13处出现极大。应用溶度参数解释了上述结果。本工作所得聚苯乙烯溶度参数实验值为8.8。 根据在θ-溶剂中A2=0及Mark-Houwink方程参数α=1/2的条件,从粘度及光散射所测得的聚苯乙烯-丁酮-正己烷体系(30℃)的θ溶剂组成是一致的,γθ=0.45。
English
STUDIES OF THE DILUTE SOLUTION PROPERTIES OFPOLYSTYRENE-METHYLETHYLKETONE-HEXANE SYSTEM
Abstract:
The intrinsic viscosities of five polystyrene (PS) fractions in mixed solvents of methylethyl ketone (MEK) and hexane were determined．When the intrinsic viscosities are plotted against the solvent compositions，there appears a maximum at the volume fraction of hexane γ=0.13． The light scattaring measurements of a PS fraction in seven mixed solvents of varied compositions show that the values of the second virial coefficient A，also pass through a maximum at γ=0.13． The above results are inter-preted by means of solubility parameters，that of PS lies between those of MEK and hexane．From our experimental results．a solubility parameter of 8.8 for PS is suggested．The θ-composition of PS-MEK-hexane at 30.0℃ was determined both from light scattering and viscosicy measurements；the results obtained are in agreement with each other and γθ=0.45．
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