The Flexible PEI Composites

摘要

The present study investigates the compatibilizing effect of polyphosphazene on the blends of poly(ether imide) (PEI) and thermotropic liquid crystalline polymer (Vectra-B).FTIR study showed that there was a partial interac-tion or chemical reaction between the PEI and LCP in the presence of compatibilizer.Polyphosphazene is com-patibilized with both PEI and LCP,which was evident from DMA results.From the X-ray diffraction study,it has been observed that the crystalline structure of PEI-LCP blends was increased with the addition of compati-bilizer.The thermal study of the composites has been studied by DTA/thermo gravimetric analyses (TGA).TGA thermograms showed an increase in decomposition temperature of PEI-LCP blends in the presence of com-patibilizer.Measurement of the tensile properties showed an increase in the elongation as well as en-hanced modulus and strength.From SEM micrographs of tensile fractured surfaces,the addition of compatibi-lizer to PEI-LCP blends was found to increase the adhe-sion between the matrix and the dispersed phase.