Toughening Mechanisms of PVC/SAN/ABS Blends

doi:10.19491/j.issn.1001-9278.2009.11.006

Abstract

Abstract: ABS grafted copolymer was prepared by grafting styrene and acrylonitrile onto PB seed latex in emulsion polymerization, with which PVC/SAN/ABS blends were prepared. Keeping constant ABS fraction, the weight ratio of SAN to PVC varied from 70.5/17.5 to 18/70. Transmission electron microscope (TEM) showed that SAN component promoted the crazing and PVC the shear yielding. Scanning electron microscope (SEM) observation of the fractured surface revealed that voids and plastic flow were enhanced with increasing PVC content. Small angle X-scattering (SAXS) showed that SAN increased the scattering intensity, which was attributed to crazing.

Key words: Poly(vinyl chloride), crazing, shear yielding, acrylonitrile-butadiene-styrene copolymer, styrene-acrylonitrile copolymer

. Toughening Mechanisms of PVC/SAN/ABS Blends[J]. China Plastics, 2009, 23(11): 30-33 .

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Toughening Mechanisms of PVC/SAN/ABS Blends

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