Pickering emulsions, water or oil droplets stabilized solely by solid particles, are attracting increasing attention, due to the fascinating possibilities for applications in food, pharmaceuticals and preparation of hybrid materials. In this paper, we report oil-in-water (O/W) Pickering emulsions stabilized solely by polymerization-induced self-assembly (PISA) synthesized diblock copolymer spherical nanoparticles. Poly (N,N-dimethylaminoethyl methacrylate)-b-poly (benzyl methacrylate) (PDMA-b-PBzMA) diblock copolymer nanoparticles with 20 wt% solid content were prepared in ethanol via RAFT dispersion polymerization. Then PDMA-b-PBzMA nanoparticles were used as emulsifiers to prepare O/W Pickering emulsions by homogenization. The regulation of droplet size of the O/W Pickering emulsion was systemically investigated by adjusting the size of emulsifiers, the concentration of emulsifiers, and the ratio of oil/water. Moreover, Pickering emulsion polymerization was successfully applied to prepare poly (laurate methacrylate) microparticles. These results provide instructive insights to choose proper nanoparticles for the preparation of Pickering emulsions and control over the size of emulsion droplets.

由于在食品，药品和混合材料制备中的引人入胜的可能性，仅由固体颗粒稳定的Pickering乳剂，水滴或油滴正受到越来越多的关注。在本文中，我们报告了仅由聚合诱导的自组装（PISA）合成的二嵌段共聚物球形纳米颗粒稳定的水包油（O / W）Pickering乳液。通过RAFT分散聚合在乙醇中制备了具有20wt％固体含量的聚（N，N-甲基丙烯酸二甲基氨基乙基酯）-b-聚（甲基丙烯酸苄酯）（PDMA- b- PBzMA）二嵌段共聚物纳米颗粒。然后PDMA- b-PBzMA纳米颗粒用作乳化剂，通过均质化制备O / W Pickering乳液。通过调节乳化剂的大小，乳化剂的浓度和油/水的比例，系统地研究了O / W Pickering乳液的液滴尺寸调节。此外，Pickering乳液聚合成功地用于制备聚（月桂酸酯甲基丙烯酸酯）微粒。这些结果为选择合适的纳米颗粒用于制备Pickering乳液和控制乳液液滴的大小提供了有益的见识。