Preparation of polystyrene with long chain branches via free radical polymerization

Autor:	A. M. Paul, S. V. McKinley, A. T. Hu, L. H. Tung
Rok vydání:	1981
Předmět:	Kinetic chain length Living free-radical polymerization chemistry.chemical_compound chemistry Polymer chemistry Radical polymerization Living polymerization Suspension polymerization Chain transfer Polystyrene Styrene
Zdroj:	Journal of Polymer Science: Polymer Chemistry Edition. 19:2027-2039
ISSN:	1542-9369 0360-6376
DOI:	10.1002/pol.1981.170190815
Popis:	Polystyrene with random long chain branches has been difficult to prepare. A new approach using small amounts of chain-transferring monomers to copolymerize with styrene free radically was examined in this work. Of the several comonomers examined, vinylbenzylthiol yielded polystyrene with branched structure. But because of the high chain trnsfer constant, the branches occurred mainly in the low-molecular-weight end of the distribution. As a side interest, vinylbenzylthiol was found to be an effective agent for the broadening of molecular weight distribution.
Databáze:	OpenAIRE
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