Rapid preparation of hierarchically porous ceramic microspheres based on UV-curing-assisted molding
Rapid preparation of hierarchically porous ceramic microspheres based on UV-curing-assisted molding
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DOI：
10.1016/j.jeurceramsoc.2021.09.033
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发表时间：
2021-09
影响因子：
5.7
通讯作者：
Jianwei Liang;Wei Liu;Yang Gao;Zeng Baobao;Fu Chong;Meipeng Huang;Xudong Luo;Haidong Wu
中科院分区：
文献类型：
--
作者：
Jianwei Liang;Wei Liu;Yang Gao;Zeng Baobao;Fu Chong;Meipeng Huang;Xudong Luo;Haidong Wu
陶瓷微球已经引起了人们的广泛关注，但如何在短时间内制备出孔隙率高、球形性好、大小或形状可控的分层多孔陶瓷微球仍然是一个挑战。为此，我们开发了一种适应性强的方法，可以在短时间内制备出具有高孔隙率和良好形状的分级多孔陶瓷微球。采用紫外光固化辅助成型法和Pickering乳液法相结合的方法制备了层状多孔陶瓷微球。在紫外灯(395 nm，50W)的照射下，Pickering乳液可以在10 S内固化。用扫描电子显微镜(SEM)对三种不同形状的微球的微观结构进行了表征。所制备的微球具有较高的球形度，孔的连通性高达54%，孔隙率高达73.4%±3.0%，而密度在∼为1.02g/cm~3时较低。
Ceramic microspheres have attracted significant attention, while the preparation of hierarchically porous ceramic microspheres with high porosity, good sphericity, and controllable size or shape in a short time remains a challenge. Herein, we developed a highly adaptable methodology for the preparation hierarchically porous ceramic microspheres with high porosity and favorable shape in a short time. The UV-curing assisted molding method combined with the Pickering emulsion method was utilized to prepare hierarchically porous ceramic microspheres. Under the irradiation of a UV-curing lamp (395 nm, 50 W), the Pickering emulsion can be cured within as short as 10 s. The microstructures of the three microspheres with different shapes were characterized by scanning electron microscopes (SEM). The as-prepared microspheres had a high sphericity, the interconnectivity of pores was as high as 54 %, and its porosity was as high as 73.4 % ± 3.0 %, while the density was quite low at ∼ 1.02 g/cm3.