Miscibility and complexation behavior of poly(cyanomethyl methacrylate) and poly(2-cyanoethyl methacrylate) with tertiary amide polymers

Abstract

The complexation behavior and miscibility of poly(cyanomethyl methacrylate) (PCYMMA) and poly(2-cyanoethyl methacrylate) (PCYEMA) with various tertiary amide polymers was studied. Among the findings, PCYMMA and PCYEMA formed interpolymer complexes with poly(N-methyl-N-vinylacetamide) (PMVAc) or poly(N-vinyl-2-pyrrolidone) (PVP) in tetrahydrofuran (THF) solutions. PCYMMA also formed complexes with poly(N,N-dimethylacrylamide) (PDMA) in THF solutions. However, PCYEMA did not form complexes with PDMA in THF solutions, but the THF-cast blends were miscible over the entire composition range. Fourier-transform infrared spectroscopy provided further evidence on the miscibility behavior through changes in the amide carbonyl absorption bands of each tertiary amide polymer in the blends as well as in the cyano absorption band of PCYEMA.