Effect of polystyrene on poly(ethylene terephthalate) crystallization

摘要: Blends of poly(ethylene terephthalate) (PET) and polystyrene (PS) with PS content ranging from 0% to 60% by weight, were compounded in a laboratory internal mixer, followed quenching into iced water, resulting substantially amorphous compounds. Blend morphology was analyzed scanning electron microscopy (SEM). Standard differential calorimetry (DSC) used study the cold crystallization melting behavior PET PET/PS blends. SEM micrographs show two-phase structure made up spherical particles dispersed matrix. DSC scans showed that is affected heating rate addition even small amounts PS. In particular, significantly reduced incorporation 1% PS, attributed anti-nucleating effect on PET. The amount crystallized characteristics (temperature, rate) are not either or rate.