MIXED MICELLES OF DODECYLTRIMETHYLAMMONIUM BROMIDE AND DIDODECYLDIMETHYLAMMONIUM BROMIDE

被引：50

作者：

LUSVARDI, KM ^{[1
]}

FULL, AP ^{[1
]}

KALER, EW ^{[1
]}

机构：

[1] UNIV DELAWARE,CTR MOLEC & ENGN THERMODYNAM,DEPT CHEM ENGN,NEWARK,DE 19716

来源：

LANGMUIR | 1995年 / 11卷 / 02期

关键词：

D O I：

10.1021/la00002a021

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Mixed micelles of dodecyltrimethylammonium bromide (DTAB) and didodecyldimethylammonium bromide (DDAB) are investigated with small-angle neutron scattering (SANS). The roughly spherical DTAB micelle elongates, and the fraction of condensed bromide ions increases, as the DDAB-DTAB mixing ratio increases at a constant total surfactant concentration. The aggregate composition matches that predicted by an ideal mixing model. SANS contrast variation experiments using partially deuterated DTAB (DdTAB) confirm the modeling parameters determined from fully hydrogenated surfactant samples and provide consistent structural information about the interfacial region.

引用

页码：487 / 492

页数：6

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