烷基聚氧乙烯醚磺基甜菜碱的构效关系研究

doi:10.13218/j.cnki.csdc.2017.03.001

日用化学工业 ›› 2017, Vol. 47 ›› Issue (3): 121-125.doi: 10.13218/j.cnki.csdc.2017.03.001

• 基础研究 • 下一篇

烷基聚氧乙烯醚磺基甜菜碱的构效关系研究

陈晖, 侯丽雅, 刘雪锋

江南大学化工与材料工程学院,江苏无锡 214122

收稿日期:2016-12-07 发布日期:2019-03-19
通讯作者: 刘雪锋,教授,博士,硕士生导师,电话:13382889669,E-mail:xfliu@jiangnan.edu.cn。
作者简介:陈晖(1990-),女,江苏泰兴人,硕士,助理实验师,电话:15006180372,E-mail:chenhui1445@126.com。
基金资助:
国家自然科学基金资助项目(21673103);江苏省高校青蓝工程资助项目

Relationship between structure and physicochemical properties of polyoxyethylene sulfobetaines surfactants

CHEN Hui, HOU Li-ya, LIU Xue-feng

School of Chemical & Material Engineering,Jiangnan University,Wuxi,Jiangsu 214122,China

Received:2016-12-07 Published:2019-03-19

摘要/Abstract

摘要： 为了研究非-两性离子混合型表面活性剂的构效关系,以乙氧基(EO)长度n分别为1,2,3和4的N,N-二甲基-N-十二烷基聚氧乙烯醚磺基甜菜碱(C₁₂EO_nSBe)为研究对象,利用滴体积法、时间分辨荧光法等获得C₁₂EO_nSBe的临界胶束浓度(cmc)、胶束聚集数(N_m)等性质参数。实验结果表明:与分子结构相近的传统十二烷基磺基甜菜碱(C₁₂SBe)相比,C₁₂EO_nSBe的cmc更低;随着n增大,C₁₂EO_nSBe的cmc降低,饱和吸附量(Γ_m)增大,分子占据面积(A_min)减小,临界胶束聚集数(N_m,c)减小。

关键词: 混合型表面活性剂, 烷基聚氧乙烯醚磺基甜菜碱, 构效关系

Abstract: In order to find the structure-performance relationship of nonionic-zwitterionic hybrid surfactants,N,N-dimethyl-N-dodecyl polyoxyethylene (n) sulfobetaines (C₁₂EO_nSBe) with separate polyoxyethylene length (n=1-4) were taken as studying object.Data for critical micelle concentration (cmc) and number of micellar aggregates (N_m) were obtained by drop-volume method and time-resolved fluorescence method.Results showed that,as comparing with the conventional N,N-dimethyl-N-dodecyl sulfobetaine (C₁₂SBe),cmc of C₁₂EO_nSBe (n=1-4) is lower.Following the increase of n,cmc of C₁₂EO_nSBe (n=1-4) declines;saturated adsorption (Γ_m) increases;the minimum molecular cross-sectional area (A_min) deceases;and the critical micellar aggregation number (N_m,c) decreases as well.

Key words: hybrid surfactant, N,N-dimethyl-N-dodecyl polyoxyethylene (n) sulfobetaines, the structure-performance relationship

中图分类号:

TQ423

陈晖, 侯丽雅, 刘雪锋. 烷基聚氧乙烯醚磺基甜菜碱的构效关系研究[J]. 日用化学工业, 2017, 47(3): 121-125.

CHEN Hui, HOU Li-ya, LIU Xue-feng. Relationship between structure and physicochemical properties of polyoxyethylene sulfobetaines surfactants[J]. China Surfactant Detergent & Cosmetics, 2017, 47(3): 121-125.

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烷基聚氧乙烯醚磺基甜菜碱的构效关系研究

Relationship between structure and physicochemical properties of polyoxyethylene sulfobetaines surfactants

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