摘要
This paper concerns about the compatibility and morphology of the PBT/PET blended fi-bers.According to the theories of solution thermodynamics,the compatibility of this system hasbeen discussed by using the calculated results e.g.ΔH<sub>m</sub>,Δδandψ<sub>ab</sub>,which were presented by priorinvestigators.The theoretical predictions show that this system may behave as a compatibilitypair.Meanwhile,the compatibility of the crystalline PBT/PET blend system has been studiedwith the help of DSC,WAXD,DDV and SEM.These experiments have further proved that theamorphous region is miscible and the crystal region is not co-crystal.The morphology of thesystem basically belongs to the“interlocked”network.PBT component plays the important rolein increasing the crystallizability and crystallinity of the PBT/PET blend system.In the range ofthe smaller blending proportion,the crystal structure mainly characterizes the crystal configura-tion of the most component and the blending effects is more satisfactory.
This paper concerns about the compatibility and morphology of the PBT/PET blended fi- bers.According to the theories of solution thermodynamics,the compatibility of this system has been discussed by using the calculated results e.g.ΔH_m,Δδandψ_(ab),which were presented by prior investigators.The theoretical predictions show that this system may behave as a compatibility pair.Meanwhile,the compatibility of the crystalline PBT/PET blend system has been studied with the help of DSC,WAXD,DDV and SEM.These experiments have further proved that the amorphous region is miscible and the crystal region is not co-crystal.The morphology of the system basically belongs to the“interlocked”network.PBT component plays the important role in increasing the crystallizability and crystallinity of the PBT/PET blend system.In the range of the smaller blending proportion,the crystal structure mainly characterizes the crystal configura- tion of the most component and the blending effects is more satisfactory.
