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Effect of Binary/Ternary Fatty Acids Ratio and Glycerin on the Phase Behaviors of Soap Solutions
Author(s) -
Li Fangfang,
Chen Minghua,
Zhang Wanping
Publication year - 2017
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-017-1927-y
Subject(s) - chemistry , micelle , liquid crystal , phase (matter) , fatty acid , ternary operation , differential scanning calorimetry , chromatography , hexagonal phase , fatty acid ester , myristic acid , lamellar structure , crystallography , analytical chemistry (journal) , organic chemistry , palmitic acid , thermodynamics , materials science , physics , optoelectronics , aqueous solution , computer science , programming language
Phase behaviors of liquid soaps prepared with single myristic acid, binary fatty acid mixtures and ternary fatty acid mixtures (with 30% total fatty acids) are described. The influence of glycerin on the phase behaviors of ternary soaps is discussed. Phase behaviors were characterized by combining pH, viscosity, polarization microscopy, X‐ray scattering and differential scanning calorimetry (DSC) analysis. The results showed that the kind and proportion of fatty acids played key roles in the phase behaviors of soaps. Glycerin had a significant influence on the phase behaviors of soaps. Liquid and Cub + Hex (cubic and hexagonal phase) phase were stable, while Liq + Crystal (liquid micelle and crystal phase), Liq + Lam (liquid micelle and lamellar phase), Liq + Hex + Lam (liquid micelle and hexagonal and lamellar phase) phases displayed separation regions, Glycerin was investigated to improve the stability of separation phases for two weeks, appropriate percentage of the fatty acids in soaps application.