期刊
POLYMER
卷 211, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2020.123094
关键词
Cylinder-like; Polystyrene-silica; Composite particles
资金
- National Natural Science Foundation of China [51973117]
- Program of Young Eastern Scholar from Shanghai Institutions of Higher Learning [QD2015014]
- University of Shanghai for Science and Technology
The cylinder-like shape is one of the most common shapes in geometry and polymer-silica composite particles have been one of the most commonly reported organic-inorganic composite particles, while cylinder-like polymer-silica composite particles are seldom reported in literature. In this work, we report a facile method to prepare cylinder-like polystyrene-silica (PS-SiO2) composite particles by judicious combination of PVP-involved dispersion polymerization and magnetic stirring. First, spherical PS-SiO2 composite particles were synthesized by dispersion polymerization of styrene in an ethanol/water mixture. Second, cylinder-like PS-SiO2 composite particles were prepared by stirring the spherical PS-SiO2 particles in a water medium in the presence of PVP. The effects of PVP molecular weight, PVP concentration, stirring rate, stirring time and stirring temperature on the morphology of the composite particles were investigated. Optimization of the stirring conditions allowed relatively high percentage (up to similar to 73%) of cylindrical particles to be achieved. This method is expected to expand the morphology library of polymer-silica composite particles.
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