阳离子表面活性剂CTAB/PVA相互作用机理研究  

Study on the interaction mechanism of surfactant CTAB/g with PVA complex in aqueous solution

作　　者：裘灵光[1] 张士润[1] 刘卉[1] 谢安建[1] 沈玉华[1] 

机构地区：[1]安徽大学化学化工学院,安徽合肥230039

出　　处：《安徽大学学报（自然科学版）》2004年第4期51-55,共5页Journal of Anhui University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(20031010);安徽省高等学校青年教师科研基金资助项目(01080309)

摘　　要：通过混合溶液的粘度行为,考察了水溶性中性聚合物聚乙烯醇(PVA)与阳离子表面活性剂十六烷基三甲基溴化铵(CTAB)之间的相互作用模型;解释了二者相互作用机理,修正并验证了离子型表面活性剂/中性聚合物相互作用模型,认为表面活性剂/聚合物混合溶液的粘度行为除了与聚合物和表面活性剂的浓度有关以外,还与表面活性剂胶束的电离程度有关,并提出了粘度与表面活性剂浓度、聚合物浓度以及表面活性剂胶束电离度之间的相关公式,所提出的模型与实验数据能够很好的相符。Interactions between a cationic surfactant, cetyltrimethyl ammonium bromide (CTAB) and a water-soluble polymer polyvinyl alcohol (PVA) were investigated by means of viscosity and electric conductance. It was found that PVA displayed a special viscosity behavior in aqueous solution containing the surfactant CTAB because of the molecular interaction of the polymer and the surfactant, and the special viscosity depends on ionization of the surfactant, as well as polymer concentration and surfactant concentration. The surfactant micelle/polymer model was revised to develop a new conception to describe the dependence of the solution viscosity on the (ionization0 of surfactant micelle, and the new equation proved to be in good agreement with the (experimental0 data.

关 键 词：阳离子表面活性剂 CTAB/PVA 相互作用机理 聚合物 聚乙烯醇 粘度 十六烷基三甲基溴化铵 

分 类 号：TQ423.12[化学工程]