Poly(butylene terephthalate) poly(ethylene terephthalate) mixtures formed by ball milling

Mixtures of poly(butylene terephthalate) (PBT) and poly(ethylene terephthalate) (PET) polymers were formed using ball milling technique and characterized by means of differential scanning calorimetry (DSC) and X-ray diffraction (XRD). PET with different degrees of crystallinity was used in the solid-state mechanical milling process. Results suggest that PBT greatly influences the crystallization of amorphized PET by milling.