PROPERTIES OF MISCIBLE BLENDS OF POLYGLUTARIMIDE WITH POLY(STYRENE-CO-MALEIC ANHYDRIDE)

In the present study, blends of styrene/maleic anhydride copolymer wit h polyglutarimide were studied using a variety of methods. The blends were found to be miscible over the entire composition range and showed positive deviations in glass transition temperature from the ideal (l inear) behaviour. Fourier transform infra-red spectra of the blends sh owed the presence of significant interactions between the two polymers . These interactions were found to be possibly of a polar nature, invo lving the carbonyls of anhydride and imide rings respectively. Althoug h the blends are miscible, synergism was not found for the mechanical properties of the prepared blends. The mechanical properties of the bl ends, however, showed additivity, as mechanical properties varied line arly with the composition. (C) 1997 Elsevier Science Ltd.