氨基酸型表面活性剂烷基二羧酸钠的结构对表面活性、自聚集行为及润湿性能的影响

doi:10.7517/j.issn.1674-0475.2018.03.010

影像科学与光化学 ›› 2018, Vol. 36 ›› Issue (3): 291-297.DOI: 10.7517/j.issn.1674-0475.2018.03.010

• 论文 • 上一篇

氨基酸型表面活性剂烷基二羧酸钠的结构对表面活性、自聚集行为及润湿性能的影响

卢香¹, 郝春玲², 姜小明¹

1. 贵州大学化学与化工学院, 贵州贵阳 550025;
2. 贵州大学农学院, 贵州贵阳 550025

收稿日期:2017-12-02 修回日期:2018-03-22 出版日期:2018-05-15 发布日期:2018-05-15
通讯作者: 姜小明
基金资助:
贵州省科学技术基金项目（[2013]2097；[2013]2244）、贵州省工业攻关项目（黔科合GY字[2010]3014）和贵州省教育厅自然科学研究项目（黔教科2011-022）

The Effect of the Structures of Dicarboxylic Amino Acid-based Surfactants on the Surface and Wetting Properties and Aggregation Behavior

LU Xiang¹, HAO Chunling², JIANG Xiaoming¹

1. Department of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, P. R. China;
2. College of Agriculture, Guizhou University, Guiyang 550025, Guizhou, P. R. China

Received:2017-12-02 Revised:2018-03-22 Online:2018-05-15 Published:2018-05-15

摘要/Abstract

摘要： 本文合成了3个氨基酸型表面活性剂：十二烷基甘氨酸钠（C12GlyNa）、十二烷基氨基丙二酸钠（C12MalNa2）和十二烷基谷氨酸钠（C12GluNa2），用表面张力法、荧光探针法及接触角测量，研究了它们的分子结构对表面活性、自聚集行为以及对方解石润湿性能的影响。结果表明，当增加一个羧基后，氨基酸型表面活性剂的临界胶团浓度（cmc）和最低表面张力（γ_cmc）增大，饱和吸附量（Г_max）和胶团聚集数减小，降低表面张力的效率（pC₂₀）降低，但在方解石表面的接触角变化较小。与C12MalNa2相比，在两个羧基之间增加一个亚甲基的C12GluNa2，其最低表面张力（γ_cmc）变化很小，但cmc和Г_max更小，A_min更大，在方解石表面的最大接触角增大，对方解石的润湿性能降低。

关键词: 氨基酸型表面活性剂, 表面活性, 聚集行为, 润湿性能, 荧光探针

Abstract: Three amino acid-based surfactants, C12GlyNa, C12MalNa2, C12GluNa2, were prepared and their structures were identified by ¹HNMR. Their surface properties and aggregation behavior were studied. Compared to C12GlyNa, C12MalNa2 shows higher values of cmc, γ_cmc and lower values of Г_max and pC₂₀. The surfactant, C12GluNa2, exhibits lower Г_max and higher Amin compared to C12MalNa2. The maximum contact angle of C12GluNa2 solution on the calcite surface is higher than that of C12MalNa2 solution. The methylene group between two carboxyl groups shows great influences on the surface properties and the aggregation behavior.

Key words: amino acid-based surfactant, surface properties, aggregation, wetting properties, fluorescence

卢香, 郝春玲, 姜小明. 氨基酸型表面活性剂烷基二羧酸钠的结构对表面活性、自聚集行为及润湿性能的影响[J]. 影像科学与光化学, 2018, 36(3): 291-297.

LU Xiang, HAO Chunling, JIANG Xiaoming. The Effect of the Structures of Dicarboxylic Amino Acid-based Surfactants on the Surface and Wetting Properties and Aggregation Behavior[J]. Imaging Science and Photochemistry, 2018, 36(3): 291-297.

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氨基酸型表面活性剂烷基二羧酸钠的结构对表面活性、自聚集行为及润湿性能的影响

The Effect of the Structures of Dicarboxylic Amino Acid-based Surfactants on the Surface and Wetting Properties and Aggregation Behavior

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