水溶性聚合物与十二烷基硫酸钠相互作用的^1H NMR研究  

INTERACTIONS OF WATER-SOLUBLE POLYMERS WITH SODIUM DODECYL SULFATE IN AQUEOUS SOLUTION STUDIED BY ~1H NMR

作　　者：冯杨[1] 方晓雯[1] 毛诗珍[1] 赵濉[2] 袁汉珍[1] 俞稼镛[2] 杜有如[1] 

机构地区：[1]中国科学院武汉物理与数学研究所波谱与原子分子物理国家重点实验室,湖北武汉430071 [2]中国科学院感光化学研究所,北京100101

出　　处：《波谱学杂志》2004年第1期49-55,共7页Chinese Journal of Magnetic Resonance

基　　金：The Fundamental National Key Basic Research Development Program"Fundamental study on Extensively Enhanced 0il Recovery"(Project Grant G1999022504)and NSFC(20373087)

摘　　要：用^1H NMR方法研究了分别在2g／L聚乙烯吡咯烷酮(PVP)和2g／L聚乙烯醇(PVA)存在下，一系列不同浓度的十二烷基硫酸钠(SDS)溶液．二维NOESY实验表明，SDS在浓度为2.5mmol／L时形成胶束，且PVP被增溶到胶束内部；当SDS浓度低于2.5mmol／L时，PVP与SDS之间没有明显的相互作用．自旋-自旋弛豫时间的测量结果支持这一结论．实验中没有检测到PVA与SDS之间的相互作用．Aqueous solutions of sodium dodecyl sulfate (SDS) at various concentrations in 2 g/L polyvinylpyrrolidone (PVP) and 2 g/L polyvinyl alcohol (PVA), respectively, were studied by ~1H NMR. Two-dimensional nuclear Overhauser enhancement spectroscopy (NOESY) experiments show that SDS starts to micellize at a concentration of 2.5 mmol/L, with PVP solubilized in the interior of the micelles. At SDS concentrations lower than 2.5 mmol/L, no significant interaction could be detected. Spin-spin relaxation measurements support this conclusion. The interaction between PVA and SDS was hardly detected.

关 键 词：水溶性聚合物 十二烷基硫酸钠 核磁共振 聚乙烯吡咯烷酮 聚乙烯醇 相互作用 自旋-自旋弛豫时间 

分 类 号：O641.3[理学—物理化学] O657.61[理学—化学]