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在散装和固体基板上对水/甘油/EO30PS系统进行显微镜分析

Makoto Uyama¹, Roland Steitz², Marcus Trapp²

¹Shiseido Co., Ltd. MIRAI Technology Institute, Yokohama, Kanagawa 220-0011, Japan.

Langmuir : the ACS journal of surfaces and colloids

|August 17, 2023

概括

干燥化品配方揭示了表面活性剂自组装的差异. 在散装中,聚氧乙烯 (30) 植物乙烯 (EO30PS) 微粒变得更加有序. 在表面上,EO30PS形成了薄双层,对于理解乳液的行为至关重要.

科学领域:

合体和表面科学科学
材料科学材料科学材料科学
化品科学化品科学

背景情况:

表面活性剂系统是化品配方的关键,当它们在皮肤上干燥时,它们会集中在皮肤上.
了解表面活性剂在干燥过程中如何自我组装对于产品性能至关重要.

研究的目的:

研究水/甘油/多氧乙烯 (30) 植物乙烯 (EO30PS) 散装与干燥过程中的固体基板上的自组结构.
为了阐明基质相互作用对表面活性剂自组装与散装行为相比的影响.

主要方法:

微角中子散射 (SANS) 用于分析散体结构.
中子反射计用于研究表面活性剂在 (Si) 表面上的吸附.

主要成果:

大体而言,增加的水损失导致密集的圆形聚氧乙烯 (30) 植物乙烯 (EO30PS) 微粒的排序较高,结构变化最小.
在Si表面上,EO30PS形成了双层,高度 (20%重量) 显示平均两层 (双层).
吸附的EO30PS层很薄,有倾斜的分子,有限的溶剂和低级.

结论:

干燥显著改变了表面活性剂的自我组装,在散装和表面上观察到不同的行为.
在表面上形成薄而倾斜的双层,可以了解化品配方的结构性质.
这项研究增强了对应用化品 (如乳液) 中表面活性剂行为的理解.

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