羧甲基纤维素系列高分子表面活性剂在溶液中分子形态的研究

STUDIES ON MOLECULAR MORPHOLOGY OF CARBOXY METHYL CELLULOSE BASED POLYMER SURFACTANTS IN SOLUTION

通过激光光散射和粘度法研究了羧甲基纤维素（ＣＭＣ）与烷基醇聚氧乙烯醚丙烯酸酯（ＡＲ１２ＥＯｎ）的超声共聚物在溶液中的分子形态。结果表明，随活性大单体支链增长，共聚物分子尺寸增大；水溶液中的胶束粒子随共聚物的疏水性增强而增大，ＣＭＣ－ＡＲ１２ＥＯ３体系胶束聚集数最大；共聚物分子与胶束均呈棒状结构。共聚物水溶液的粘度主要取决于分子量和胶束缔合数，盐水溶液中的粘度异常行为与共聚物中引入的大单体活性及形成的胶束结构有关。

The macromolecular morphology of copolymers prepared by ultrasonic copolymerization of CMC with alkyl poly(etheroxy) acrylate in water, aqueous solution of NaCl and water alcohol solution were studied by laser light scattering and viscosity measurements. The results show that the molecular size of copolymers increases with the increase of the length of macromonomer segment. The stronger the hydrophobic of the copolymer, the bigger the size of micellar particles in its aqueous solution. The macromolecules and micelles in solution are rod like, the abnormal behavior of viscosity in NaCl aqueous solution is related to the activity of macromonomer and micellar structure of the copolymer in solution.