Department of Applied Chemistry, Chemical Engineering, and Biochemical Engineering, Graduate School of Science and Engineering, Yamagata University.
Daito Kasei Kogyo Co., Ltd.
J Oleo Sci. 2022 Aug 4;71(8):1159-1168. doi: 10.5650/jos.ess22083. Epub 2022 Jul 6.
Frictional properties are one of the most important physical factors in the design of cosmetic dispersions in which solid particles are dispersed in a liquid. The effects of ingredients and formulations on frictional properties have been previously reported. In this study, the frictional properties of 33 cosmetic dispersions were evaluated using a sinusoidal motion friction evaluation system when applied on an artificial skin. A detailed analysis of the velocity dependence of the friction coefficient demonstrated that all cosmetic dispersions exhibited stable pattern and the friction behavior did not change during the round trip. We analyzed friction-based parameters by principal component analysis and demonstrated that the principal components Z and Z include the static friction coefficient μ , kinetic friction coefficient μ , delay time δ, and viscosity coefficient C, and that these factors are involved in characterizing friction dynamics. The cluster analysis on Z and Z suggested that these dispersions can be classified in three groups with respect to friction dynamics. These results can help understand the characteristics of cosmetics and control their function and utility.
摩擦性能是化妆品分散体设计中最重要的物理因素之一，其中固体颗粒分散在液体中。以前已经报道了成分和配方对摩擦性能的影响。在这项研究中，使用正弦运动摩擦评估系统评估了 33 种化妆品分散体在人造皮肤上的摩擦性能。对摩擦系数的速度依赖性的详细分析表明，所有化妆品分散体均表现出稳定的模式，并且在往返过程中摩擦行为不会改变。我们通过主成分分析对基于摩擦的参数进行了分析，并证明了主成分 Z 和 Z 包括静摩擦系数 μ 、动摩擦系数 μ 、延迟时间 δ 和粘性系数 C，这些因素涉及到摩擦动力学的特征。Z 和 Z 的聚类分析表明，这些分散体可以根据摩擦动力学分为三组。这些结果有助于理解化妆品的特性，并控制其功能和用途。
