疏水缔合聚丙烯酰胺与双子表面活性剂的相互作用

引用本文: 陈洪, 李二晓, 叶仲斌, 韩利娟, 罗平亚. 疏水缔合聚丙烯酰胺与双子表面活性剂的相互作用[J]. 物理化学学报, 2011, 27(03): 671-676. doi: 10.3866/PKU.WHXB20110306 shu

Citation: CHEN Hong, LI Er-Xiao, YE Zhong-Bin, HAN Li-Juan, LUO Ping-Ya. Interaction of Hydrophobically Associating Polyacrylamide with Gemini Surfactant[J]. Acta Physico-Chimica Sinica, 2011, 27(03): 671-676. doi: 10.3866/PKU.WHXB20110306 shu

疏水缔合聚丙烯酰胺与双子表面活性剂的相互作用

基金项目:
四川省青年基金(08ZQ026-001)资助项目 (08ZQ026-001)

摘要:

制备了一种脂肪酸酯双磺酸盐型双子表面活性剂, 利用粘度法、界面张力法和原子力显微镜研究了疏水缔合聚丙烯酰胺与双子表面活性剂在溶液中的相互作用. 实验结果表明: 疏水缔合聚丙烯酰胺在溶液中能够通过自组装形成疏水微区并发展成网络结构, 疏水微区与表面活性剂在溶液中能形成混合胶束; 当一定量的表面活性剂加入时, 对疏水缔合聚丙烯酰胺的自组装起促进作用, 而过多双子表面活性剂的加入又会对聚合物分子的自组装起抑制作用, 从而显著影响疏水缔合聚丙烯酰胺的溶液性质, 随着表面活性剂浓度的增加, 聚合物溶液粘度先增加、再降低; 同时, 疏水缔合聚丙烯酰胺对双子表面活性剂的界面性能也有较大影响, 聚合物的加入使双子表面活性剂降低油/水界面张力的能力下降, 油/水界面张力达到平衡所需时间延长.

关键词:

English

Interaction of Hydrophobically Associating Polyacrylamide with Gemini Surfactant

1.
1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, P. R. China;
2. School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
Received Date: 27 October 2010
Available Online: 03 March 2011
Fund Project:
四川省青年基金(08ZQ026-001)资助项目

Abstract:

A fatty acid disulfonate anionic gemini surfactant was prepared and the structure of the surfactant was characterized by ¹H-NMR. Hydrophobically associating polyacrylamide was prepared according to a procedure from literature. The interaction between the hydrophobically associating polyacrylamide (HAPAM) and the anionic gemini surfactant was studied by surface/interfacial tension, apparent viscosity, and atomic force microscopy (AFM). Experimental results show that HAPAM can form a network structure in the aqueous solution by self assembly. Mixed micelles are formed by the interaction of gemini surfactant micelles and the hydrophobic microdomain of the hydrophobically associating polyacrylamide in aqueous solution, which plays a remarkable role in the surfactant and polymer assembly. Mixed micelles can enhance the inter- or intra-molecular association between the polymer molecules and the surfactant, which increases the strength of the network formed by the hydrophobically associating polyacrylamide. The apparent viscosity of the solution increased by the addition of the gemini surfactant. When the addition of the gemini surfactant exceeded a certain amount, the association between the hydrophobic groups of the polymer decreased and the network formed by hydrophobically associating interaction was weakened by the surfactant micelles, which led to a decrease in solution viscosity. The polymer also largely influenced the interfacial properties of the gemini surfactant, especially the dynamical interfacial tension. A high polymer concentration led to an increase in the time required to reach equilibrium.

Key words:

Gemini surfactant
/ Hydrophobically associating polyacrylamide
/ Interfacial tension
/ Viscosity
/ Atomic force microscopy

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沈阳化工大学材料科学与工程学院沈阳 110142

疏水缔合聚丙烯酰胺与双子表面活性剂的相互作用

English

Interaction of Hydrophobically Associating Polyacrylamide with Gemini Surfactant

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

疏水缔合聚丙烯酰胺与双子表面活性剂的相互作用

English

Interaction of Hydrophobically Associating Polyacrylamide with Gemini Surfactant

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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