Zhang Tongtong, Jiang Hang, Hong Liangzhi, Ngai To
Faculty of Materials Science and Engineering, South China University of Technology Guangzhou 510640 P. R. China
The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education & School of Chemical and Material Engineering, Jiangnan University Wuxi 214122 P. R. China.
Chem Sci. 2022 Aug 30;13(36):10752-10758. doi: 10.1039/d2sc03783a. eCollection 2022 Sep 21.
Surface-segregated micelles (SSMs) with adaptive wettability have considerable potential for application in Pickering emulsions and bioanalytical technology. In this study, spherical SSMs were prepared polymerization-induced self-assembly co-mediated with a binary mixture of macromolecular chain transfer agents: pH-responsive poly(2-(dimethylamino) ethyl methacrylate) and hydrophobic polydimethylsiloxane. Using these SSMs as the sole emulsifier, we adjusted the pH to successfully produce both water-in-oil-in-water (W/O/W) and oil-in-water-in-oil (O/W/O) multiple emulsions through a single-step emulsification process. Moreover, we demonstrated that multiple emulsion systems with adjustable pH are suitable for the development of an efficient and recyclable interfacial catalytic system. Multiple emulsion microreactors increase the area of the oil-water interface and are therefore more efficient than the commonly used O/W and W/O emulsion systems.
具有自适应润湿性的表面隔离胶束（SSM）在皮克林乳液和生物分析技术中具有相当大的应用潜力。在本研究中，通过与大分子链转移剂的二元混合物共同介导的聚合诱导自组装制备了球形SSM：pH响应性聚（甲基丙烯酸2-（二甲基氨基）乙酯）和疏水性聚二甲基硅氧烷。使用这些SSM作为唯一的乳化剂，我们通过一步乳化过程调节pH值成功制备了水包油包水（W/O/W）和油包水包油（O/W/O）多重乳液。此外，我们证明了pH值可调的多重乳液体系适用于开发高效且可循环的界面催化体系。多重乳液微反应器增加了油水界面的面积，因此比常用的O/W和W/O乳液体系更高效。
