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Preparation and characterization of ultra‐low molecular weight poly(vinyl alcohol) graft copolymer
Author(s) -
Guo MinJie,
Xia JianJun,
Fan Zhi,
Zhao Zhuo,
Mi HuaiFeng
Publication year - 2009
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.30453
Subject(s) - copolymer , grafting , thermogravimetric analysis , polymer chemistry , monomer , vinyl alcohol , thermal stability , materials science , fourier transform infrared spectroscopy , acrylamide , chemistry , chemical engineering , polymer , organic chemistry , composite material , engineering
Graft reaction of acrylamide (AM) and 4‐vinyl pyridine (4‐VP) onto ultra‐low molecular weight poly(vinyl alcohol) by ceric (IV) ion initiation had been systematically investigated; and the graft conditions were optimized by studying the effect of monomer/initiator concentration, solvents composition, reaction time and temperature. At optimized conditions, the maximum grafting efficiency and grafting ratio was ∼ 50% and 51%, respectively with the presence of AM, whereas they decreased to 19% and 23%, respectively, without the presence of AM. Thermogravimetric analysis showed that as‐resulted graft copolymer had a lower thermal stability than homopolymer PVA. FTIR and 1 H‐NMR confirmed chemical structure of as‐synthesized graft copolymer. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009