Radiation-induced and RAFT-mediated grafting of poly(hydroxyethyl methacrylate) (PHEMA) from cellulose surfaces

KODAMA Y., BARSBAY M., GUVEN O.

RADIATION PHYSICS AND CHEMISTRY, vol.94, pp.98-104, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 94
  • Publication Date: 2014
  • Doi Number: 10.1016/j.radphyschem.2013.07.016
  • Journal Name: RADIATION PHYSICS AND CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.98-104
  • Keywords: RAFT mediated grafting, 2-Hydroxyethyl methacrylate (HEMA), Cellulose, gamma-Irradiation, LIVING RADICAL POLYMERIZATION, FRAGMENTATION CHAIN TRANSFER, GAMMA-IRRADIATION, MEMBRANES, UPDATE
  • Hacettepe University Affiliated: Yes

Abstract

This paper presents the results of RAFT mediated free-radical graft copolymerization of 2-hydroxyethyl methacrylate (HEMA) onto cellulose fibers in a "grafting-from" approach under gamma-irradiation. The effects of absorbed dose and monomer concentration on the graft ratios were investigated at different monomer (HEMA) to RAFT agent (cumyl dithiobenzoate, CDB) ratios. Cellulose-g-PHEMA copolymers with various graft ratios up to 92% (w/w) have been synthesized. The synthesized copolymers were characterized by ATR-FTIR spectroscopy, X-ray photoelectron spectroscopy, elemental analysis and scanning electron microscopy. The results of various techniques confirmed the existence of PHEMA in the copolymer composition. (C) 2013 Elsevier Ltd. All rights reserved.