糖苷改性三硅氧烷表面活性剂及保湿性能  

Glycoside-based Trisiloxane Surfactant and Its Moisturization

作　　者：韩富[1] 陈艳红[1] 周雅文[1] 徐宝财[1] 

机构地区：[1]北京工商大学食品学院北京市食品风味化学重点实验室食品添加剂与配料北京工程研究中心,北京100048

出　　处：《精细化工》2012年第4期318-321,共4页Fine Chemicals

基　　金：国家自然科学基金(20976003,21176004);北京市教委科研计划项目(KM201010011003)~~

摘　　要：根据表面活性剂结构与性能的关系,将有机硅表面活性剂具有低表面张力的高"效能"与糖基表面活性剂的可生物降解性结合起来,合成了糖苷改性三硅氧烷表面活性剂,通过测定表面张力、临界聚集浓度、聚集体大小和保湿性研究了糖苷改性三硅氧烷表面活性剂的表面活性和在化妆品中的保湿性能。结果表明,糖苷改性三硅氧烷表面活性剂可以显著地降低水的表面张力至约20 mN/m,临界聚集浓度约为1×10-4mol/L,在水溶液中形成的聚集体平均水合半径约为250 nm。在化妆品配方中加入质量分数3%的糖苷改性三硅氧烷表面活性剂,使用2 h后水分含量为33.36%,水合率为31.97%,水分散失为11.21 g/(h.m2),水分散失率为-11.54%,具有明显的补水、锁水效果,且有持续的补水、锁水能力,是一种优良的化妆品保湿剂。Glycoside-based trisiloxane surfactant,which incorporates both the lower surface tension quality of trisiloxanes and the better biological degradability of carbohydrate-based surfactants,was synthesized based on the theory of the relationship between surfactant structure and its property.The surface activity and moisturization properties of the surfactant in cosmetics were studied by determining the surface tension,critical aggregation concentration,aggregation size and moisturization.The results show that the glycoside-based trisiloxane surfactant reduced the surface tension of water to approximately 20 mN/m.The critical aggregation concentration was at a level of 1×10-4 mol/L.The average hydrodynamic radius of the surfactant aggregate in aqueous solution was about 250 nm.The skin moisture content of 33.36%,hydration rate of 31.97%,skin moisture loss of 11.21 g/（h·m2）,moisture loss rate of-11.54% were obtained using cosmetics with the glycoside-based trisiloxane in 2 h when the content of glycoside-based trisiloxane surfactant was 3% in the cosmetics.Excellent moisturizing effect of glycoside-based trisiloxane surfactant can supply hydration and hold water for the skin,subjecting the skin to a long-lasting moisturization and delicate condition.

关 键 词：糖苷 三硅氧烷 化妆品 保湿 表面活性剂 

分 类 号：TQ423[化学工程]