期刊
JOURNAL OF SURFACTANTS AND DETERGENTS
卷 15, 期 3, 页码 339-344出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11743-011-1306-z
关键词
Organosilicon quaternary salt; Surface tension; Antibacterial activity; Phase behavior diagram
资金
- Chinese Ministry of Education [208073]
- Shandong Province Natural Science Foundation of China [Y2008B35]
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 gamma-chloropropylmethyldimethoxysilane (CPMDMS). The products were characterized by H-1 NMR, C-13 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.
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