丙烯腈-三元乙丙橡胶-苯乙烯接枝共聚物AES的表征

Characterization of graft copolymer of styrene and acrylonitrile onto EPDM(AES)

采用苯乙烯和丙烯腈接枝三元乙丙橡胶合成丙烯腈-三元乙丙橡胶-苯乙烯接枝共聚物AES,用其和苯乙烯-丙烯腈(SAN)树脂共混得到AES树脂。对合成的AES树脂样品进行常温相对分子质量及相对分子质量分布的测定,红外光谱、热稳定性与微观结构表征,并与目标样品进行对比。得出三元乙丙橡胶已接枝上SAN支链,即三元乙丙橡胶与苯乙烯及丙烯腈发生了接枝共聚合反应;合成样品相对分子质量及相对分子质量分布数据、热稳定性数据及微观结构与目标样品接近;合成样品AES粉料和SAN树脂基本均匀混合的结论。

In this paper,the graft copolymer of styrene and acrylonitrile onto EPDM（AES） was prepared and blended with SAN resin, the synthesized AES was characterized by infrared spectrum. Relative molecular weight and its distribution, heat stability, and microcosmic structure of the AES were determined and compared with the target AES. Results showed that the graft eopolymerization of AES has happended,the properties of AES are near to that of the target AES.