Premium
Bioengineering functional copolymers. XI. Copper(II)‐poly( N ‐vinyl‐2‐pyrrolidone‐ co ‐ N ‐isopropylacrylamide) macrocomplexes
Author(s) -
Rzayev Zakir M. O.,
Denizli B. Kirci,
Denizli Haluk
Publication year - 2008
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.26329
Subject(s) - copolymer , polymer chemistry , poly(n isopropylacrylamide) , 2 pyrrolidone , aqueous solution , materials science , copper , polyelectrolyte , chemistry , polymer , composite material , metallurgy
A series of poly( N‐ vinyl‐2‐pyrrolidone‐ co ‐ N‐ isopropylacrylamide)s, poly(VP‐ co ‐NIPA) copolymers with different compositions were prepared by radical copolymerization of VP and NIPA in N,N′ ‐dimethylformamide at 65°C using 2,2′‐azobisisobutyronitrile as initiator. Cu(II)‐copolymer macrocomplexes were prepared by complexation of the copolymers with copper sulfate in aqueous solution at 40°C. The structure and composition of the copolymers, and the formation of coordinated Cu(II)‐complexes between amide VP units and Cu 2+ ions, were studied by FTIR spectroscopy, DSC and TGA‐DTG in addition to electrical conductivity. Studies on the relationship between composition and thermal behavior showed that the values of T g and T d of the copolymers and their coordinated macrocomplexes increased with increasing VP content. The copolymers predominantly show amorphous structure while their Cu(II)‐macrocomplexes show the presence of a crystalline phase. The conductive properties of the synthesized Cu(II)‐poly(VP‐ co ‐NIPA) complexes are also discussed. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008