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Synthesis and Properties of Organosilicon Quaternary Salts Surfactants
Author(s) -
Li Junying,
Zhang Qingsi,
Wang Yan,
Zhang Wenyu,
Li Tianduo
Publication year - 2012
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/s11743-011-1306-z
Subject(s) - organosilicon , chemistry , benzyl chloride , ammonium , trimethylamine , organic chemistry , ammonium chloride , salt (chemistry) , chloride , nuclear chemistry , catalysis
Diethyl‐benzyl‐[3‐methyldimethoxyl)]silpropyl ammonium chloride (DEBSAC) was synthesized from N , N ‐diethyl‐aminopropyl‐methyldimethoxysilane (DEAPMDES) and benzyl chloride. Diethyl‐2,3‐epoxypropyl‐[3‐methyldimethoxyl)] silpropyl ammonium chloride (DEEPSAC) was synthesized from DEAPMDES and epoxy chloropropane. Trimethyl‐[3‐methyldimethoxyl)] silpropyl ammonium chloride (TMSAC) was synthesized from trimethylamine and γ‐chloropropylmethyldimethoxysilane (CPMDMS). The products were characterized by 1 H NMR, 13 C NMR, and IR. The surface tension measurements showed that the organosilicon quaternary salts exhibit a lower surface tension and a lower critical micelle concentration (CMC) than the hydrocarbon counterparts. The plate count method experiments illustrated that DEEPSAC has a better degree of antibacterial activity against Escherichia coli than DEBSAC. The solubilizing effects of the organosilicon quaternary salts on organosilicone were studied by pseudo‐ternary phase diagrams of synthesized products/cosurfactant( n ‐butanol)/water/octamethylcyclotetrasiloxane. The solubilizing activities decreased in the order of TMSAC > DEBSAC > DEEPSAC.