THE EFFECT OF SURFACTANT HEADGROUP CHARGE ON POLYMER MICELLE INTERACTION
THE EFFECT OF SURFACTANT HEADGROUP CHARGE ON POLYMER MICELLE INTERACTION
复制标题
表面活性剂头基电荷对聚合物胶束相互作用的影响
DOI：
10.1016/0021-9797(89)90234-8
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
J. Engberts
中科院分区：
文献类型：
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作者：
J. Brackman;J. Engberts
研究了十二烷基磷酸钠与聚环氧乙烷（PEO，mol wt 10，000和20，000）、聚环氧丙烷（PPO，mol wt 1000）和聚乙烯基甲基醚（PVME，mol wt 27，000）形成的胶束之间的相互作用随表面活性剂结构电荷（Z_0 = 1.0-2.0）的变化。为此，CMC值已在不存在和存在聚合物的情况下采用基于监测胶束化后pH变化的方法测量。结果进行了讨论，在比较类似的数据为钠辛基磷酸盐（Z 0 = 1.0），钠癸基硫酸盐（SDeS），钠十二烷基硫酸盐（SDS），和十六烷基三甲基溴化铵（CTAB）与相同的聚合物的相互作用。虽然SDeS胶束与PEO 10 k相互作用，但正癸基磷酸钠胶束与该聚合物的相互作用可以忽略不计。正癸基磷酸胶束与PEO 20 k以及PPO和PVME相互作用，但随着Z 0从1.0增加到2.0，相互作用减小。我们得出结论，疏水相互作用和水化壳层重叠效应是聚合物胶束络合过程中的重要因素。
The interaction between micelles formed from sodiumn-decylphosphate and poly(ethylene oxide) (PEO, mol wt 10,000 and 20,000), poly(propylene oxide) (PPO, mol wt 1000), and poly(vinyl methylether) (PVME, mol wt 27,000) has been studied as a function of the structural charge (Z0= 1.0–2.0) of the surfactant. To this end, CMC values have been measured in the absence and presence of polymer employing a method based on monitoring the change in pH upon micellization. The results are discussed in comparison with similar data for the interaction of sodiumn-octylphosphate (Z0= 1.0), sodiumn-decylsulfate (SDeS), sodiumn-dodecylsulfate (SDS), and cetyltrimethylammonium bromide (CTAB) with the same polymers. Whereas SDeS micelles interact with PEO 10k, the interaction of sodiumn-decylphosphate micelles with this polymer is negligible.n-Decylphosphate micelles do interact with PEO 20k as well as with PPO and PVME, but the interaction decreases upon increasing Z0from 1.0 to 2.0. We conclude that hydrophobic interactions and hydration shell overlap effects are important factors in the polymer-micelle complexation process.