Preparation of cylinder-like polystyrene-silica composite particles
| Autor: | Hao Sun, Hua Zou, Shuxia Zhai, Yiqian Wang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Dispersion polymerization
Work (thermodynamics) Materials science Morphology (linguistics) Polymers and Plastics Organic Chemistry Composite number 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Styrene chemistry.chemical_compound chemistry Materials Chemistry Cylinder Polystyrene Composite material 0210 nano-technology |
| Zdroj: | Polymer. 211:123094 |
| ISSN: | 0032-3861 |
| DOI: | 10.1016/j.polymer.2020.123094 |
| Popis: | 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 ~73%) of cylindrical particles to be achieved. This method is expected to expand the morphology library of polymer-silica composite particles. |
| Databáze: | OpenAIRE |
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