Spherical-to-wormlike micelle transition in a pseudogemini surfactant system with two types of effective pH-responsive groups

被引：47

作者：

Lu, Hongsheng ^{[1
,2
,3
]}

Shi, Qianping ^{[1
]}

Wang, Baogang ^{[1
,3
]}

Huang, Zhiyu ^{[1
,2
,3
]}

机构：

[1] Southwest Petr Univ, Coll Chem & Chem Engn, Chengdu 610500, Peoples R China

[2] Minist Educ, Engn Res Ctr Oilfield Chem, Chengdu 610500, Peoples R China

[3] Oil & Gas Field Appl Chem Key Lab Sichuan Prov, Chengdu 610500, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2016年 / 494卷

关键词：

Micelle transition; Pseudoge mini surfactant; pH-responsive; Viscoelastic solution; FLUIDS; DYNAMICS; VESICLES; RHEOLOGY; DESIGN; ROUTE; PHASE;

D O I：

10.1016/j.colsurfa.2016.01.014

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel pseudogemini surfactant system, which has two types of pH-responsive groups in the connection of the alkyl chain and the spacer, has been developed and investigated by adjusting pH. These two types of pH-responsive groups both worked for the micelle transition because they had different ionization degrees and electrostatic attraction forces with the aid of pH variation. The system could be promptly switched between low viscosity fluid and high viscoelastic solution. Besides, the pH-responsive ability was studied by the steady and dynamic rheological measurements, which is effective after several cycles of pH adjusting with the almost invariable magnitude level of viscosity. The transition between spherical micelle and wormlike micelle for the surfactant system at different pH values could be further confirmed by dynamic light scattering and cryogenic transmission electron microscopy characterization. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：74 / 80

页数：7

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