静电溶解能预测表面活性剂的皮肤刺激潜力吗?
Sundas Khan Farooq1, Manori Jayasinghe2
1College of Engineering and Applied Science, University of Cincinnati, Cincinnati, Ohio 45221, United States.
The journal of physical chemistry. B
|September 30, 2025
概括
了解表面活性剂的刺激潜力是关键. 硫酸氨 (SLES) 表面活性剂中较长的乙氧酸盐链通过改变水相互作用来减少皮肤刺激,正如分子动力学模拟所显示的那样.
科学领域:
- 物理化学 物理化学
- 计算生物物理学的计算生物物理学
- 材料科学 材料科学 材料科学
背景情况:
- 表面活性剂被广泛使用,但可能会引起皮肤刺激.
- 了解这种刺激的分子基础对于开发更安全的产品至关重要.
- 溶解热力学在表面活性剂与生物相互作用中起着关键作用.
研究的目的:
- 为了研究不同乙氧酸盐链长度的硫酸乙烯硫酸盐 (SLES) 表面活性剂的溶解热力学.
- 为了确定表面活性剂结构,溶解性质和皮肤刺激潜力之间的关系.
- 为了确定分子描述器来设计更温和的表面活性剂.
主要方法:
- 使用了全原子自由能扰动分子动力学 (FEP/MD) 模拟.
- 计算了溶解自由能量,并将其分为范德瓦尔斯 (vdW) 和静电贡献.
- 进行了温度依赖的分析来评估溶解.
主要成果:
- 范德瓦尔斯相互作用变得不那么有利,随着疏水隔离器长度的增加.
- 静电贡献主导溶解,并且随着更长的乙氧化变得更加有利.
- 静电溶解呈现出一种杂热效应,与减少皮肤刺激和关键菌度 (CMC) 相相关.
结论:
- 静电溶解是表面活性剂诱导的皮肤刺激的预测描述.
- 表面活性剂的分子设计可以由这些热力学见解来指导.
- 这些发现支持单体透理论,并为开发用于个人护理和制药应用的较温和表面活性剂提供了框架.
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