疏水缔合聚丙烯酰胺与阳离子双子表面活性剂的相互作用  

Interactions between Hydrophobically Modified Polyacrylamide and Cationic Gemini Surfactant

作　　者：董宏伟[1] 孙玉海[1] 陈志[1] 陈权生[1] 冯玉军[1] 魏德卿[1] 

机构地区：[1]中国科学院成都有机化学研究所

出　　处：《合成化学》2007年第2期165-168,共4页Chinese Journal of Synthetic Chemistry

基　　金：山东大学"胶体与界面化学教育部国家重点实验室"开放基金资助项目(200601)

摘　　要：通过表面张力法和电导率法分别考察了阳离子双子表面活性剂(12-2-12)与非离子疏水缔合聚丙烯酰胺(HMPAM)和普通聚丙烯酰胺(PAM),传统表面活性剂十二烷基三甲基溴化铵(DTAB)与HMPAM和PAM之间的相互作用。结果表明,12-2-12+HMPAM复合体系与12-2-12水溶液体系相比,在w(聚合物含量)<CMC(临界胶团浓度)时,复合体系的表面张力(γ)具有升高的趋势,且γ随着w的增大升高的趋势越明显;在w>CMC时,复合体系的电导率(κ)具有下降的趋势,且κ随着w的增大下降的趋势越明显,说明12-2-12与HMPAM之间存在相互作用。Interactions between a cationic gemini surfactant, 1,2-ethane bis （ dimethyldodecylammonium bromide） （ designated as 12-2-12） with hydrophobically modified polyacrylamide （HMPAM） and nonionic polyacrylamide（PAM）, were investigated by means of surface tension and conductivity. It was found that, compared with pure surfactant solution, when w （ content of polymer） 〈 CMC （ con- centration of critical lump scrap）, the surface tension of complex system＂ 12-2-12 ＋ HMPAM＂ has an elevatory trend which increases with w increasing when w 〉 CMC, the electrical conductivity of the mixed system ＂12-2-12 ＋ HMPAM＂ has an degressive trend which decreases with w increasing. This favors that the mixed system of 12-2-12 ＋ HMPAM has a stronger interaction.

关 键 词：疏水缔合聚丙烯酰胺 阳离子双子表面活性剂 相互作用 表面张力 电导率 

分 类 号：O631[理学—高分子化学]