Functionalization of poly(ester-urethane) surface by radiation-induced grafting of N-isopropylacrylamide using conventional and reversible addition-fragmentation chain transfer-mediated methods

WALO M., PRZYBYTNIAK G., BARSBAY M., GUVEN O.

POLYMER INTERNATIONAL, vol.65, no.2, pp.192-199, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 65 Issue: 2
  • Publication Date: 2016
  • Doi Number: 10.1002/pi.5045
  • Journal Name: POLYMER INTERNATIONAL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.192-199
  • Keywords: radiation-induced grafting, poly(ester-urethane), N-isopropylacrylamide (NIPAAm), reversible addition-fragmentation chain transfer (RAFT) polymerization, FREE-RADICAL POLYMERIZATION, CO-60 GAMMA-IRRADIATION, RAFT POLYMERIZATION, METHACRYLATE) PHEMA, IONIZING-RADIATION, TEMPERATURE, COPOLYMERS, MEMBRANES, STYRENE, CELLULOSE
  • Hacettepe University Affiliated: Yes

Abstract

The functionalization of poly(ester-urethane) (PUR) surface was conducted using radiation-induced grafting. A thermosensitive layer constructed from N-isopropylacrylamide (NIPAAm) was introduced onto a polyurethane film and characterized using attenuated total reflection Fourier transform infrared and X-ray photoelectron spectroscopies and contact angle measurements. Size exclusion chromatography was used to analyse the PUR-graft-PNIPAAm copolymers and homopolymers formed in solution. Additionally, reversible addition-fragmentation chain transfer (RAFT) polymerization was performed in order to obtain PNIPAAm-grafted surfaces with well-defined properties. Atomic force microscopy was used to evaluate the surfaces synthesized via conventional and RAFT-mediated grafting methods. The results of various techniques confirmed the successful grafting of NIPAAm from PUR film. (C) 2015 Society of Chemical Industry