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Synthesis and Properties of Organosilicon Quaternary Salts Surfactants

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Journal of Surfactants and Detergents

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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Acknowledgments

The authors are grateful to the Shandong Provincial Key Laboratory of Fine Chemicals in China. This project was supported by the Key Grant Project of Chinese Ministry of Education (Nr. 208073) and Shandong Province Natural Science Foundation of China (Nr. Y2008B35).

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Authors and Affiliations

  1. Shandong Provincial Key Laboratory of Fine Chemicals, Shandong Institute of Light Industry, Jinan, 250353, People’s Republic of China

    Junying Li & Tianduo Li

  2. School of Chemical Engineering, Shandong Institute of Light Industry, Jinan, 250353, People’s Republic of China

    Junying Li, Qingsi Zhang & Wenyu Zhang

  3. School of Food and Bioengineering, Shandong Institute of Light Industry, Jinan, 250353, People’s Republic of China

    Yan Wang

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  1. Junying Li
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  2. Qingsi Zhang
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  3. Yan Wang
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  4. Wenyu Zhang
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  5. Tianduo Li
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Correspondence to Tianduo Li.

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Li, J., Zhang, Q., Wang, Y. et al. Synthesis and Properties of Organosilicon Quaternary Salts Surfactants. J Surfact Deterg 15, 339–344 (2012). https://doi.org/10.1007/s11743-011-1306-z

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  • DOI: https://doi.org/10.1007/s11743-011-1306-z

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