Department of Applied Chemistry, Chemical Engineering, and Biochemical Engineering, Graduate School of Science and Engineering, Yamagata University.
Yonezawa Kojokan High School.
J Oleo Sci. 2023;72(4):421-428. doi: 10.5650/jos.ess22427.
Organogels are attractive formulations in cosmetics, food, and pharmaceuticals. They exhibit characteristic frictional and mechanical responses during the collapse of a mesostructure. In this study, the friction dynamics of organogels composed of five different waxes (paraffin wax, microcrystalline wax, ceresin, candelilla wax, and carnauba wax) and liquid paraffin were evaluated using a sinusoidal motion friction evaluation system. All organogels exhibited a velocity dependence of friction coefficient that increased with the acceleration of the contact probe. Depending on the ease of the crystal formation of the waxes in liquid paraffin, hydrocarbon-based waxes formed soft organogels with a low-friction coefficient, whereas ester-based, highly polar waxes formed organogels that were hard and had a high-friction coefficient.
有机凝胶在化妆品、食品和制药领域具有吸引力。它们在中间结构崩塌过程中表现出特征性的摩擦和机械响应。在这项研究中，使用正弦运动摩擦评估系统评估了由五种不同蜡（石蜡、微晶蜡、地蜡、小烛树蜡和巴西棕榈蜡）和液体石蜡组成的有机凝胶的摩擦动力学。所有有机凝胶都表现出与速度相关的摩擦系数，随着接触探针的加速度增加而增加。根据蜡在液体石蜡中结晶的难易程度，基于碳氢化合物的蜡形成低摩擦系数的软有机凝胶，而基于酯的、高极性的蜡形成硬有机凝胶，具有高摩擦系数。
