聚醚型聚合皂的稀溶液性质研究

Dilute Solution Properties of Polyether Polysoaps of Star-Type

本文利用在聚乙二醇的端基引入憎水基团,合成了具有星型结构的聚醚型聚合皂试样,测定了在30℃下四氢呋喃中的渗透压,得到试样的数均分子量、平均接枝数与第二维利系数.从试洋在正丁醇和在水溶液中的特性粘数,求得了试样的均方根末端距,并推测试样在正丁醇稀溶液中可能存在分子间的缔合,而在水溶液中,可能主要存在分子内的缔合作用.

: The alkyl polyoxyethylene polysoaps of star-type are synthesised. The molecular weights. branch numbers,and the second Virial coefficients of the samples are determined by osmometry in THP solutios at 30℃,and the mean root-square distances of the ends are determined from the measurements of the intrin- sical viscesities of the samples in both n- butanol and aqueous solutions. Intermolecular association of the samples in n -butanol solution and innermolcular association in aqueous one may be suggested from the re- sults obtained.