Production of polydivinylbiphenyl particles by precipitation polymerization in supercritical carbon dioxide
| Autor: | Syuji Fujii, Hideto Minami, Hiroshi Maenaka, Masayoshi Okubo |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Supercritical carbon dioxide
Polymers and Plastics Bulk polymerization Chemistry Radical polymerization technology industry and agriculture macromolecular substances Colloid and Surface Chemistry Polymerization Chemical engineering Specific surface area Particle-size distribution Polymer chemistry Materials Chemistry Precipitation polymerization Particle Physical and Theoretical Chemistry |
| Zdroj: | Colloid & Polymer Science. 280:1084-1090 |
| ISSN: | 1435-1536 0303-402X |
| DOI: | 10.1007/s00396-002-0735-7 |
| Popis: | Polydivinylbiphenyl particles were produced by precipitation polymerization of divinylbiphenyl without any stabilizer in supercritical carbon dioxide as polymerization medium at ca. 30 MPa for 24 h at 65 °C at different initiator concentrations (0.5–58.1 mmol l–1). The conversions in all polymerization systems were relatively high. An increase in initiator concentration led to increases in the degree of coagulation and in the amount of low-molecular-weight byproducts and to a decrease in the amount of vinyl groups in the particle. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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