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首页> 外文期刊>Journal of Applied Polymer Science >Behavior of aqueous solutions of poly(ethylene oxide-b-propylene oxide) copolymers containing a hydrotropic agent
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Behavior of aqueous solutions of poly(ethylene oxide-b-propylene oxide) copolymers containing a hydrotropic agent

机译：含有水溶助剂的聚环氧乙烷-b-环氧丙烷共聚物的水溶液行为

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摘要

The effect of the hydrotropic agent, sodium p -toluenesulfonate (NaPTS), was evaluated on the micelle formation process and on phase behavior of aqueous solutions containing poly(ethylene oxide-b-propylene oxide) (PEO-PPO) copolymers. We have studied monofunctional diblock copolymers coupled with hydrocarbons groups (R-PEO-PPO-OH and R-PPO-PEO-OH, where R length is linear C-4 and C12-14) The critical micelle concentration (CMC) and critical micelle temperature (CMT) values of the aqueous copolymers solutions were obtained from both surface tension versus concentration plots and the dye solubilization method. The influence of the hydrocarbons groups length and PPO segment position in the structure of the copolymers were also analyzed. The same measures were obtained for the aqueous solutions of hydrotropic agent which, in turn, also presented molecular aggregation. The presence of the hydrotropic agent in the aqueous copolymers solutions altered the surface tension of these solutions and the occupied molecular area per copolymer molecule at air-water interface and CMC and CMT values of the copolymers. On the other hand, the aggregation points and the surface tension of the NaPTS solutions were dependent on the copolymer structure and composition. (C) 1998 John Wiley & Sons, Inc. [References: 19]
机译：评价了水溶助剂对甲苯磺酸钠（NaPTS）对胶束形成过程和含聚环氧乙烷-b-环氧丙烷（PEO-PPO）共聚物的水溶液的相行为的影响。我们已经研究了与烃基偶联的单官能二嵌段共聚物（R-PEO-PPO-OH和R-PPO-PEO-OH，其中R长度为线性C-4和C12-14）临界胶束浓度（CMC）和临界胶束从表面张力对浓度的曲线图和染料增溶方法获得共聚物水溶液的温度（CMT）值。还分析了烃基长度和PPO链段位置对共聚物结构的影响。对于水溶助长剂的水溶液获得了相同的措施，其又呈现出分子聚集。水性共聚物溶液中水溶助剂的存在改变了这些溶液的表面张力以及空气-水界面处每个共聚物分子的占据分子面积以及共聚物的CMC和CMT值。另一方面，NaPTS溶液的聚集点和表面张力取决于共聚物的结构和组成。 （C）1998 John Wiley＆Sons，Inc. [参考：19]

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