An improvement of microfluidic-assisted internal gelation in the preparation of millimeter-sized ceramic microspheres

Xu, Rui1; Zhao, Shijiao2; Song, Jing1; Deng, Changsheng1; Hao, Shaochang1; Zhao, Xingyu1; Li, Jianjun1; Li, Ziqiang1; Liu, Bing1; Ma, Jingtao1

2022-04-01

10.1111/jace.18437

JOURNAL OF THE AMERICAN CERAMIC SOCIETY   影响因子和分区

0002-7820

1551-2916

The microspheres prepared by the microfluidic-assisted internal gelation process are still challenging to reach the millimeter size due to the large gravity. The gravity would affect the sphericity and size uniformity of microspheres. The improved microfluidic-assisted internal gelation process is designed and optimized to produce large-sized monodisperse ceramic microspheres with good sphericity. The movement mechanism of millimeter-sized sol droplets and gel microspheres in the microchannel is summarized and the state of the dispersed phase entering the measuring cylinder is controlled. The friction between the gel microspheres and the tubing wall is reduced as much as possible, and ZrO2 ceramic microspheres of 500 +/- 5 mu m with good sphericity are prepared with the broth at room temperature. The mechanism of sol droplets entering the oil surface is explored to demonstrate the superiority of the improved microfluidic-assisted internal gelation process. The improved microfluidic-assisted internal gelation process could be directly extended to preparing other millimeter-sized monodisperse ceramic microspheres.

ceramic microspheres internal gelation process microfluidic millimeter-sized monodisperse

SCI ; EI

英语

其他

National Natural Science Foundation of China[52073157] ; National ST Major Project[ZX06901] ; Tsinghua University[2017HYYXKJS1]

Materials Science

Materials Science, Ceramics

WOS:000782527900001

WILEY

20221611972362

Drops ; Gelation ; Microspheres ; Sols ; Zirconia

Microfluidics:632.5.1 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2

MATERIALS SCIENCE

Web of Science

1.Tsinghua Univ, Inst Nucl & New Energy Technol, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
2.Southern Univ Sci & Technol, Coll Engn, Shenzhen, Peoples R China

Xu, Rui,Zhao, Shijiao,Song, Jing,et al. An improvement of microfluidic-assisted internal gelation in the preparation of millimeter-sized ceramic microspheres[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2022,105:5045-5057.

Xu, Rui.,Zhao, Shijiao.,Song, Jing.,Deng, Changsheng.,Hao, Shaochang.,...&Ma, Jingtao.(2022).An improvement of microfluidic-assisted internal gelation in the preparation of millimeter-sized ceramic microspheres.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,105,5045-5057.

Xu, Rui,et al."An improvement of microfluidic-assisted internal gelation in the preparation of millimeter-sized ceramic microspheres".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 105(2022):5045-5057.