Department of Biochemical Engineering, Graduate School of Science and Engineering, Yamagata University.
Department of Informatics, The University of Electro-Communications.
J Oleo Sci. 2021 Feb 1;70(2):195-202. doi: 10.5650/jos.ess20252. Epub 2021 Jan 15.
The Sara-sara feel, which means "a state in which things are not damp or sticky and feel dry," is a preferred tactile sensation when people touch human skin, hair, clothing, and cosmetics. In this study, the Sara-sara feel was evaluated for silicone powder, cellulose powder, hydrophobized sericite powder, and various mixes of these powders. It was found that the highest Sara-sara feel score was achieved by the silicone powder. A multiple regression analysis showed that the Sara-sara feel was strongly correlated with a slippery feel. The relationship between certain physical properties, e.g., particle size distribution, and the slippery feel was analyzed to demonstrate how the subjects felt the slippery feel. It was observed that as the friction coefficient µ was reduced, most subjects strongly felt the slippery feel. This coefficient slightly decreased when the composition of spherical silicone powder increased, because the contact area between spherical particles is smaller than that between plate and amorphous particles.
莎莎感是指“一种不潮湿或粘稠、感觉干燥的状态”，当人们触摸人体皮肤、头发、衣物和化妆品时，莎莎感是一种受欢迎的触觉感受。在这项研究中，评估了硅酮粉、纤维素粉、疏水云母粉以及这些粉末的各种混合物的莎莎感。结果发现，硅酮粉具有最高的莎莎感评分。多元回归分析表明，莎莎感与滑爽感密切相关。分析了某些物理性质（例如粒径分布）与滑爽感之间的关系，以证明受试者如何感受到滑爽感。观察到随着摩擦系数µ的降低，大多数受试者强烈感受到滑爽感。当球形硅酮粉的组成增加时，该系数略有降低，因为球形颗粒之间的接触面积小于板状和无定形颗粒之间的接触面积。
