Abstract This study focused on the investigation in the influencing factors of the Granick’s method for Janus particle synthesis, in which selective modification of colloidosome made from a Pickering emulsion-based process was the essential strategy. Homogenizer with high shearing forces was introduced to make stable emulsion. With increased stirring speed of the homogenizer, the sizes of the colloidosomes decrease. And the stirring time of the homogenizer and the paraffin melting point have also been proved to have influence on the size distribution of colloidosomes as well as on the assembly morphology of the silica particles on the surface of the wax sphere. 160 s of the working time and the melting point of 53−57 °C were tested respectively to be the optimal condition for making the ideal colloidosomes. By using the optimized experimental conditions, silica particles with diameters of 200, 400, and 600 nm all had success in making fine colloidosomes. The Janus character were characterized by demonstrating the abilities of interfacial assembly and anisotropic structural growth of the resultant products from the optimized procedure. The research provides the conclusions of optimal experimental conditions as references for achieving scalable synthesis of Janus particles with satisfactory quality. This research could serve as a guidance to effective implementation of Granick’s method of Janus particle synthesis.

中文翻译：

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基于乳液法的Janus粒子合成实验操作研究

摘要 本研究重点研究了Granick 法合成Janus 粒子的影响因素，其中选择性修饰Pickering 乳液法制备的胶体是基本策略。引入具有高剪切力的均质器以制成稳定的乳液。随着均质机搅拌速度的增加，胶体的尺寸减小。并且均质器的搅拌时间和石蜡熔点也被证明对胶体的尺寸分布以及二氧化硅颗粒在蜡球表面的组装形态有影响。分别测试了 160 s 的工作时间和 53-57°C 的熔点，这是制备理想胶体的最佳条件。通过优化实验条件，粒径为200、400、600 nm的二氧化硅颗粒均成功制备出精细胶体。Janus 特性的特点是展示了优化程序所得产品的界面组装能力和各向异性结构增长。该研究提供了最佳实验条件的结论，为实现质量令人满意的Janus粒子的规模化合成提供了参考。该研究可为有效实施格拉尼克的 Janus 粒子合成方法提供指导。Janus 特性的特点是展示了优化程序所得产品的界面组装能力和各向异性结构增长。该研究提供了最佳实验条件的结论，为实现质量令人满意的Janus粒子的规模化合成提供了参考。该研究可为有效实施格拉尼克的 Janus 粒子合成方法提供指导。Janus 特性的特点是展示了优化程序所得产品的界面组装能力和各向异性结构增长。该研究提供了最佳实验条件的结论，为实现质量令人满意的Janus粒子的规模化合成提供了参考。该研究可为有效实施格拉尼克的 Janus 粒子合成方法提供指导。