Surfactant-Mediated Crystallization-Driven Self-Assembly of Crystalline/Ionic Complexed Block Copolymers in Aqueous Solution

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• 作者：Zaizai TongRunke Zhang ; Pianpian Ma ; Haian Xu ; Hua Chen ; Yanming Li ; Weijiang Yu ; Wangqian Zhuo ; Guohua Jiang
• 刊名：Langmuir
• 出版年：2017
• 出版时间：January 10, 2017
• 年：2017
• 卷：33
• 期：1
• 页码：176-183
• 全文大小：594K
• ISSN：1520-5827

文摘

A series of crystalline/ionic complexed block copolymers (BCPs) with various compositions have been prepared by sequential reactions. The BCPs with different hydrophilic fractions can self-assemble into various morphologies, such as spindlelike, rodlike, and spherical micelles with different crystallinity of the core. Bis(2-ethylhexyl) sulfosuccinate sodium salt (AOT) is added as a surfactant to induce the morphological transition of BCPs in aqueous media. The introduced AOT can be tightly bound to the cationic units, and a water-insoluble unit in the corona forms, leading to a reduced tethering density. Consequently, morphological variety changing from rods to platelets to fibril to dendrite-like micelles can be observed.