摘要
通过黏度法和动态光散射法研究了疏水改性聚丙烯酸(HMPA)在仲辛基酚聚氧乙烯醚(TX10)/NaBr水溶液中的缔合行为和微观形态。由Huggins方程确定了HMPA在溶液中的特性黏数[η]和Huggins常数KH。在NaBr水溶液中,体系存在尺寸较小的分子线团以及相对较大的缔合聚集体。TX10参与HMPA的疏水缔合,使其微观形态发生变化。结果表明,在引入非离子表面活性剂的盐水溶液中,HMPA经历了解缔合-重新缔合的过程。
Viscosity and dynamic light scattering measurements have been carried out on hydrophobieally modified poly（acrylic acid） （HMPA） solution in the presence of different concentration of surfactant ethoxylate nonylphenol （TX10） with the addition of NaBr. By Huggins equation, the intrinsic viscosity [ η] and Huggins constant KH were evaluated at different conditions. In HMPA solution with NaBr, the hydrodynamic radius （Rh） distribution consists of two regions： coiled macromolecules, and hydrophobic associating aggregations. HMPA is shown to interact with the surfactant TX10 in solution. Salt and surfactant induced factors lead to the different association behavior in dilute and semi-dilute HMPA solution.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2009年第8期50-53,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(60572183)
关键词
疏水改性聚丙烯酸
疏水缔合
特性黏数
盐
表面活性剂
hydrophobically modified poly（acrylic acid）
association
intrinsic viscosity
salt
nonionic surfactant
