Synthesis and Properties of Organosilicon Quaternary Salts Surfactants |
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Authors: | Junying Li Qingsi Zhang Yan Wang Wenyu Zhang Tianduo Li |
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Affiliation: | (1) Shandong Provincial Key Laboratory of Fine Chemicals, Shandong Institute of Light Industry, Jinan, 250353, People’s Republic of China;(2) School of Chemical Engineering, Shandong Institute of Light Industry, Jinan, 250353, People’s Republic of China;(3) School of Food and Bioengineering, Shandong Institute of Light Industry, Jinan, 250353, People’s Republic of China; |
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Abstract: | 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 1H NMR, 13C 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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