肺表面活性物质
化学
表面张力
相(物质)
润湿
质量分数
烷基
化学工程
层状结构
三元数制
三元运算
色谱法
有机化学
热力学
物理
工程类
生物化学
程序设计语言
计算机科学
结晶学
作者
Zhiguo Han,Xiuquan Yang,Yong Liu,Jiajia Wang,Yuyang Gao
标识
DOI:10.1007/s11743-015-1679-5
摘要
Abstract Mixed surfactant systems, used in many formulations, have aroused great attention and interest from researchers and industry due to the possibility of synergism. Alkyl polyglycoside (APG) and didecyldimethylammonium chloride (DDAC) mixtures combine the excellent properties of pure surfactants and play an important role in the development of multi‐functional washing products. To study the synergism between APG and DDAC, the physicochemical properties of different mixed systems have been investigated. The critical micelle concentration (CMC) is about 180 mg·L −1 and the surface tension at the CMC is about 26.0 mN·m −1 at a mass fraction of 40 % DDAC (ω DDAC 40 %). The values are significantly lower than pure surfactants. The foaming property shows the best performance at ω DDAC 20 %. When the mass fraction of DDAC is 80 %, the mixture exhibits better wetting and emulsifying properties. Synergism was observed in surface tension, foaming and emulsifying properties, while the wetting ability and detergency exhibited no such effects. Phase behavior of the APG/DDAC/water ternary system has also been carried out by polarized optical microscope. The phase diagram is characterized by a micellar phase, a region where lamellar and micellar phases coexist and a lamellar phase.
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