Free-radical bulk polymerization of styrene with a new trifunctional cyclic peroxide initiator
| Autor: | Zhi-Ming Huang, Guorong Shan, Zhixue Weng, Jian-Yi Wu, Wei-Chen Sheng |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
chemistry.chemical_classification
Polymers and Plastics Bulk polymerization Chemistry Dispersity Radical polymerization General Chemistry Polymer Surfaces Coatings and Films Gel permeation chromatography chemistry.chemical_compound Polymerization Polymer chemistry Materials Chemistry Molar mass distribution Polystyrene |
| Zdroj: | Journal of Applied Polymer Science. 94:1035-1042 |
| ISSN: | 1097-4628 0021-8995 |
| DOI: | 10.1002/app.20937 |
| Popis: | The bulk free-radical polymerization of styrene in the presence of a new cyclic trifunctional initiator, 3,6,9-triethyl-3,6,9-trimethyl-1,4,7-triperoxonane, was studied. Full-conversion-range experiments were carried out to assess the effects of the temperature and initiator concentration on the polymerization kinetics, molecular weight, and polydispersity. Gel permeation chromatography was used to measure the molecular weight and the molecular weight distribution of polystyrene. When this multifunctional initiator was used for styrene polymerization at higher temperatures, it was possible to produce polymers with higher molecular weights and narrower molecular weight polydispersity at a higher rate. This showed that the molecular weight and polydispersity were influenced by the initiator concentration and the polymerization temperature in an unusual manner. Moreover, polystyrene, obtained with trifunctional peroxide, had OO bonds in the molecular chains and was investigated with differential scanning calorimetry and gel permeation chromatography. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 1035–1042, 2004 |
| Databáze: | OpenAIRE |
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