Effects of Alkyl-Chain length on the Self-Assembly of Copolymers of Acrylic Acid and Alkyl Acrylate in Aqueous Media

Ikuko Toki; Miyuki Miyake; Yoshifumi YamagataYotaro Morishima

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Effects of Alkyl-Chain length on the Self-Assembly of Copolymers of Acrylic Acid and Alkyl Acrylate in Aqueous Media

机译：烷基链长度对丙烯酸和烷基丙烯酸酯共聚物在水性介质中自组装的影响

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Effects of the alkyl chain length on the association properties of copolymers of acrylic acid (AA) and ethyl (EA), n-butyl (BA) or dodecyl acrylate (DA) were investigated by static light scattering (SLA), rheometry, and foam stability measurements. Apparent weightaveragte molecular weights (Mws) of the copolymers with longer alkyl chains in a phosphate buffer solution of pH 6.8 (BPS) were higher than those having shorter alkyl chains. Aqueous solutions of AA/DA copolymer exhibited gel-like behavior at polymer concentrations higher than 10 wt whereas solutions of AA/EA and AA/BA copolymers behaved as a Newtonian fluid even at high concentration. These observations indicate that the AA/DA copolymer into an aqueous solution of sodium dodecyl sulfate (SDS), the foam stability of the solution was drastically improved. A conclusion from this work is that the dodecyl groups is long enough for the AA/alkuyl acrylate copolymers to undergo significant self-associations as well as associations with surfactants.

机译：通过静态光散射（SLA）、流变测定法和泡沫稳定性测量，研究了烷基链长对丙烯酸（AA）和乙基（EA）、正丁基（BA）或十二烷基丙烯酸酯（DA）共聚物缔合性能的影响。在pH值为6.8（BPS）的磷酸盐缓冲溶液中，烷基链较长的共聚物的表观重量平均分子量（Mws）高于烷基链较短的共聚物。AA/DA共聚物的水溶液在聚合物浓度高于10 wt%时表现出凝胶状行为，而AA/EA和AA/BA共聚物的溶液即使在高浓度下也表现为牛顿流体。这些观察结果表明，将AA/DA共聚物放入十二烷基硫酸钠（SDS）的水溶液中，溶液的泡沫稳定性大大提高。这项工作得出的结论是，十二烷基足够长，使AA/丙烯酸碱基共聚物发生显著的自缔合以及与表面活性剂的结合。

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来源
《高分子论文集》 |2001年第6期|292-298|共7页
作者
Ikuko Toki; Miyuki Miyake; Yoshifumi YamagataYotaro Morishima;
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作者单位

Material Science research Center, Lion Corporation (Hirai, Edogawa-ku, Tokyo 132-0035, Japan);

Department of Mcromolecular Science, graduate School of Science, Osaka Univerity (Toyonaka, Osaka 560-0043, Japan);

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收录信息美国《科学引文索引》(SCI);
原文格式 PDF
正文语种日语
中图分类高分子化学（高聚物）;高分子化合物工业（高聚物工业）;有机化学;
关键词
Hydropobically Midified Polyelectrolytes; Self-Association; Network Structure; Light Scattering; Rheometry; Gel Behavior; Dynamic Surface Tension; Foam Stability;

机译：疏水性中型聚电解质;自我关联;网络结构;光散射;流变测量;凝胶行为;动态表面张力;泡沫稳定性;

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Effects of Alkyl-Chain length on the Self-Assembly of Copolymers of Acrylic Acid and Alkyl Acrylate in Aqueous Media

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