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基于糖的非离子表面活性剂的类似虫的微粒形成,具有多分支甲基链

Shan Wang¹, Shiho Yada², Tomokazu Yoshimura¹

¹Department of Chemistry, Faculty of Science, Nara Women's University, Kitauoyanishi-machi, Nara 630-8506, Japan.

Langmuir : the ACS journal of surfaces and colloids

|December 11, 2024

概括

糖表面活性剂上的分支甲基促进了独特的聚合,在比线性链表面活性剂更低的度下形成棒状和状菌根. 这种结构差异会影响菌的形成和包装密度.

科学领域:

超分子化学超分子化学
体科学体科学体科学
材料科学材料科学材料科学

背景情况:

基于糖的非离子表面活性剂的聚合行为对于各种应用至关重要.
了解基链结构如何影响表面活性剂聚合是一个研究不足的领域.

研究的目的:

研究以糖为基础的表面活性剂与分支甲基链的聚合特性.
为了比较3,7,11-trimethyldodecyl maltoside (bC15Mal) 与线性 dodecyl-β-d-maltoside (C12Mal) 的聚合行为.

主要方法:

淋病学测量淋病学测量
小角度X射线散射 (SAXS) 技术
分析水溶液的分析方法

主要成果:

bC15Mal有效地降低了表面张力,在10 mmol dm−3时形成棒状,在50 mmol dm−3时转变为虫状,然后在700 mmol dm−3.3时形成凝溶液.
增加bC15Mal度降低了类似虫的小胞长度和网状网状大小,表明密集包装.
在广泛的度范围 (50700 mmol dm−3) 上,C12Mal形成了圆形小粒,随着度的增加,尺寸变小.

结论:

在链上的3,7和11位引入甲基组导致了独特的聚合行为.
与线性对应物相比,分支表面活性剂在明显较低的度下形成更高阶的聚合物结构.

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