SYNTHESIS AND PROPERTIES OF METHACRYLONITRILE-EPDM-2-VINYLNAPHTHALENEGRAFT TERPOLYMER

The graft terpolymer of methacrylonitrile (MAN) and 2-vinylnaphthalene (2-VN) onto ethylene-propylene-diene terpolymer (EPDM) was synthesize d in toluene using benzoyl peroxide (BPO) as an initiator. The effects of EPDM content, mole ratio of 2-VN to MAN, reaction time, reaction t emperature, and initiator concentration on the graft copolymerization were examined. The synthesized graft terpolymer was identified by IR a nd H-1-NMR spectroscopies. The light resistance, thermal stability, mo lecular weight, and tensile properties of the graft terpolymer were in vestigated by Fade-o-meter, thermogravimetric analysis, gel permeation chromatography (GPC), and a universal tensile machine (UTM). It was f ound that the light resistance and heat resistance as well as-the tens ile strength of the graft terpolymer are considerably better than thos e of the acrylonitrile-butadiene-styrene(ABS) terpolymer. (C) 1995 Joh n Wiley & Sons, Inc.