POLYMERIZATION OF MICELLES UNDER IRRADIATION WITH UV-LIGHT

被引：9

作者：

ARAI, K

机构：

[1] Faculty of Engineering, Gunma University, Kiryu, Gunma

来源：

MAKROMOLEKULARE CHEMIE-MACROMOLECULAR SYMPOSIA | 1990年 / 31卷

关键词：

D O I：

10.1002/masy.19900310118

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Micelle formation behavior of sodium salts of fatty acids containing double bond at the chain end, sodium 10‐undecenoate (Na‐10‐U) and sodium 8‐nonenoate (Na‐8‐N), was examined with measurement of electric conductivity of their aqueous solutions, and the plot of the electric conductivity against the concentration for each fatty acid was found to show two break points; at 0,044 and 0,12mol/1 for Na‐10‐U and at 0,16 and 0,44 mol/1 for Na‐8‐N. The similar behaviors of the aqueous solutions were also found with the measurements of the maximum amount of solubilized benzene into the aqueous solution and of the solution viscosity, and the concentrations corresponding to the break points were assumed to be first and second critical micelle concentrations (CMC's), respectively. Polymerization of the sodium salts under irradiation with UV light was investigated. For each fatty acid, the amount of the obtained polymer was very small at very low concentrations of the fatty acid, but it increased rapidly with increasing concentration of the monomer at concentrations higher than the first CMC and then mildly at the concentrations higher than the second CMC. Number‐average degrees of polymerization of the polymers obtained were measured with a gel permeation chromatography technique and found to be up to 13 for Na‐10‐U and 8,5 for Na‐8‐N. Copyright © 1990 Hüthig & Wepf Verlag

引用

页码：227 / 236

页数：10

共 16 条

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