Preparation and Characterization of Poly (vinylbenzyl chloride)-b-poly (lactide) Copolymers via Nitroxide-Mediated Controlled Radical and Ring-Opening Polymerization

Autor:	Shao Hua Shen, Qiu Guao Xiao, Qingquan Liu, Ying Xiang Duan
Rok vydání:	2012
Předmět:	chemistry.chemical_compound Nitroxide mediated radical polymerization Living free-radical polymerization Lactide Materials science Polymerization chemistry Polymer chemistry Radical polymerization General Engineering Copolymer Living polymerization Ring-opening polymerization
Zdroj:	Advanced Materials Research. :295-298
ISSN:	1662-8985
DOI:	10.4028/www.scientific.net/amr.554-556.295
Popis:	Hydroxyl-terminated poly(vinylbenzyl chloride) (PVBCOH) were synthesized using nitroxide-mediated controlled radical polymerization. Then, PVBCOH was used as a macro-initiator for ring-opening polymerization of lactide (LA) in the presence of stannous octanoate (Sn(Oct)2) as a catalyst. The structures, molecular weights and polydispersity index (PDI) of PVBCOH and PVBC-b-PLA were characterized by 1H-NMR, and GPC, respectively. The results indicated that PDI of PVBCOH and PVBC-b-PLA was 1.63 and 1.27, respectively. Moreover, the molecular weight and PDI of PVBCOH and PVBC-b-PLA could be well tuned by changing monomer-to-initiator ratio.
Databáze:	OpenAIRE
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