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Studies of reactions with polymers. III. Syntheses and properties of poly(vinyl alcohol) graft terpolymers
Author(s) -
Chiang WenYen,
Hu ChunMin
Publication year - 1988
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.1988.070360618
Subject(s) - maleic anhydride , copolymer , polymer chemistry , methyl methacrylate , vinyl alcohol , materials science , azobisisobutyronitrile , chemistry , maleimide , polymer , organic chemistry
A condensation‐coupling reaction through esterification is performed between the hydroxy groups of poly(vinyl alcohol) (PVA) and the anhydride groups of methyl methacrylate (MMA)‐co‐maleic anhydride (MA) copolymer to produce the PVA‐ g ‐MMA/MA graft terpolymer. The MMA‐co‐MA copolymer was obtained by copolymerization of MA and MMA in dimethyl sulfoxide by using azobisisobutyronitrile as initiator. The structure of reaction products was confirmed by infrared analysis, and the dependence of composition, viscosity, and yield of the graft terpolymer on the MA content in MMA‐co‐MA as well as the concentration of the reactants fed were investigated. Mechanical properties, water content, and gel content of the membranes of terpolymers were measured over a wide range of compositions. PVA‐ g ‐MMA/ N ‐ethylol maleimide was also synthesized by reacting the residual anhydride groups on PVA‐ g ‐MMA/MA with ethanol amine, this reaction proceeds through the PVA‐ g ‐MMA/ N ‐ethylol maleamic acid intermediate.