摘要
研究了十二烷基硫酸钠(简称SDS)与正丁醇不同配比时的文题内容。结果表明:只有当SDS与正丁醇配比在一定范围内才形成微乳状液;当SDS含量较低时,存在由正胶束经过双连续结构到逆胶束的大片微乳状液区;当SDS含量较高时,正胶束和逆胶束微乳状液之间被液晶相所分割。测定了分相区的部分系线,结果表明:富水相的SDS含量值高于富油相的SDS含量。
Phase diagrams of water-SDS-n-butanol-toluene system with various surfactant (SDS) to cosurfactant (n-butanol) ratios are presented. The diagrams indicate that microemulsions can only be formed with a certain Combination of SDS and n-bulanol. A stretch of microemulsion domain changing continuously from direct micelles to bicontinuous structures and to reverse micelles exists when the surfactant to cosurfactant ratio is comparatively low, while the direct micelle area is separated from the reverse micelle area by a mesomorphic medium when the surfactant to cosurfactant ratio is comparatively high. Part of the tie lines in the phase separation region is also presented. The SDS content of the water-rich phase is generally higher than that of the oil-rich phase.
基金
国家自然科学基金(2880260)
国家教委基金(32670194)
关键词
微乳状液
水
SDS
正丁醇
甲苯
相图
phase diagrams
surfactants
water
n-butanol
toluene
microemulsion
