Effects of EVA-g-MAH on Mechanical Properties and Morphological Structure of TPU/PVC Blends

Gao Shuang Huang; Song Bai Lin; Qing Hai Zhang; Da Gang Li; Yun Long Li; Zhi Jie Geng

doi:10.4028/www.scientific.net/AMR.602-604.656

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 602-604Effects of EVA-g-MAH on Mechanical Properties and...

Effects of EVA-g-MAH on Mechanical Properties and Morphological Structure of TPU/PVC Blends

Abstract:

The effects of ethylene vinyl acetate grafting maleic anhydride (EVA-g-MAH )as a compatilizer on the mechanical properties, compatibility and morphological structure of thermoplastic Polyurethane and poly(vinyl chloride) blends were studied. The blends were prepared and characterized by mechanics properties test, scanning electron microscopy(SEM,)dynamic mechanical properties (DMA) and thermogravimetry(TG) . Mechanical properties indicate that the hardness, tensile strength, breaking elongation of the blends are greatly improved by EVA-g-MAH, when the critical EVA-g-MAH content at about 4 wt%.SEM micrographs reveal that EVA-g-MAH could bring down the diameter of dispersed , change brittle fracture into ductile fracture, and promote adhesion of phase interface. The glass transition temperature change by DMA proves that the addition of the EVA-g-MAH improved the compatibilization of blends. And the results of TG experiment show that EVA-g-MAH greatly improve the thermal stability of the blends.