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Switchable Pickering Emulsions Stabilized by Silica Nanoparticles Hydrophobized In Situ with a Switchable Surfactant

Authors

  • Dr. Jianzhong Jiang,

    1. The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122 (P.R. China)
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  • Yue Zhu,

    1. The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122 (P.R. China)
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  • Prof. Zhenggang Cui,

    Corresponding author
    1. The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122 (P.R. China)
    • Zhenggang Cui, The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122 (P.R. China)

      Bernard P. Binks, Surfactant and Colloid Group, Department of Chemistry, University of Hull, Hull HU6 7RX (United Kingdom)

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  • Prof. Bernard P. Binks

    Corresponding author
    1. Surfactant and Colloid Group, Department of Chemistry, University of Hull, Hull HU6 7RX (United Kingdom)
    • Zhenggang Cui, The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122 (P.R. China)

      Bernard P. Binks, Surfactant and Colloid Group, Department of Chemistry, University of Hull, Hull HU6 7RX (United Kingdom)

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  • This work was financially supported by the National Natural Science Foundation of China (NSFC; 20901032).

Abstract

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Back and forth: The CO2/N2 trigger of a switchable surfactant (neutral amidine/cationic amidinium) was transferred to mineral nanoparticles through in situ hydrophobization in water. Switchable oil-in-water Pickering emulsions that entail a CO2/N2 trigger were obtained by using negatively charged silica nanoparticles and a trace amount of the switchable surfactant as the stabilizer.

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