Compatibility of MCPET/PTT hybrid fibers

MCPET/PTT hybrid fibers were prepared by blending and melt spinning of PTT and MCPET pellets that had been made by researchers.Fourier transform infrared spectroscopy(FT-IR) was used to characterize the molecular structure of MCPET/PTT hybrid fibers,and no significant peak shift or generation of new peaks was observed on the FT-IR spectrum,indicating that no transesterification reaction and terminal group reaction occurred between MCPET and PTT.The compatibility of MCPET/PTT hybrid was studied by differential scanning calorimetry(DSC),dynamic mechanical analysis(DMA),wide angle X-ray diffraction(WAXD) and SEM.DMA and DSC results showed that MCPET has good compatibility with PTT in the amorphous region;WAXD study indicated that the crystalline region is partialty compatible;and SEM micrographs of the cross-section of fiber blends indicated that MCPET/PTT hybrid has good compatibility.