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International Journal of Polymer Science
Volume 2011, Article ID 190349, 7 pages
Research Article

Graft Copolymerization of Styrene from Poly(vinyl alcohol) via RAFT Process

Department of Chemistry, College of Science, University of Isfahan, Isfahan 81746-73441, Iran

Received 16 March 2011; Accepted 9 June 2011

Academic Editor: Jose Ramon Leiza

Copyright © 2011 Gholam Ali Koohmareh et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Polystyrene, PS, was grafted from poly(vinyl alcohol), PVA, backbone by reversible addition-fragmentation chain transfer (RAFT) polymerization. The hydroxyl groups of the PVA were converted into aromatic dithioester RAFT agent and polymerization began in the presence of this agent. The structure of compounds was confirmed by FT-IR and 1HNMR spectroscopy. The graft copolymer was characterized by thermogravimetric analysis (TGA), X-ray diffraction (XRD), and scanning electron microscopy (SEM). Grafted polystyrene chains were cleaved from the PVA backbone by acidic hydrolysis of the PVA-g-PS, and its polydispersity index, PDI, was determined by gel permeation chromatography (GPC) showing narrow molecular weight distribution.