用电导法研究聚丙烯酰胺与十二烷基磺酸钠的相互作用  

A STUDY OF THE INTERACTION BETWEEN POLYACRYLAMIDE AND SODIUM DODECYL SULFONATE ON THE BASIS OF SOLUTION CONDUCTIVITY DATA

作　　者：曾利容[1] 吴秀章[1] 毛宏志[1] 徐桂英[1] 

机构地区：[1]山东大学化学学院胶体与界面化学研究所

出　　处：《油田化学》1991年第2期175-178,共4页Oilfield Chemistry

摘　　要：本文采用电导法研究聚丙烯酰胺(PAM)与十二烷基磺酸钠(SDS)的相互作用。发现在NaCl溶液中,PAM与SDS形成络合物;而在纯水中却观察不到络合物的形成。不论在纯水中或在NaCl溶液中,当形成SDS的正常胶束后,PAM的存在可使胶束的解离度降低。由此推论:PAM与SDS的相互作用可能有两种机理,一种是在NaCl溶液中,当SDS浓度较小时,SDS分子以疏水作用结合在PAM链上,形成络合物;一种是当SDS形成正常胶束后,PAM吸附于胶束“表面”,导致胶束解离度降低。The interaction between polyacrylamide (PAM) and sodium dodecyl sulfonate (SDS) had been studied on the basis of solution conductivity measurements. It had been found that the conductivity-concentration plot gave only onc inflection point for SDS-PAM-H_2O systems but two for SDS-PAM-brine systems. The dissociation degree of SDS micelle determined from the conductivity data, both in pure water and in aqueous NaC1 solution (0. 01tool/1), decreased with increasing PAM content. These phenomena observed were interpretated by complexation between PAM and SDS. In aqueous NaC1 solution, SDS molecules interacted with PAM chains hydrophobically when SDS concentration was small. Both in pure water and in aqueous NaC1 solution, PAM molecules could be adsorbed on the 'surface', i. e. the Stern's layer, of SDS micelle through static electric interaction when normal micelle were formed.

关 键 词：电导法 聚丙烯酰胺 十二烷基磺酸钠 化学驱油 胶束 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程] TE39