Journal of Applied Polymer Science, Vol.54, No.6, 763-770, 1994
Synthesis and Properties of Methyl Methacrylate-EPDM-Styrene Graft Terpolymer
The graft copolymerizations of methyl methacrylate (MMA) and styrene (St) onto ethylene-propylene-diene terpolymer (EPDM) were carried out with benzoyl peroxide (BPO) as an initiator in toluene. The effects of EPDM concentration, mol ratio of St to MMA, reaction time, reaction temperature, and initiator concentration on the graft copolymerizations were examined. The synthesized MMA-EPDM-St graft terpolymers (MES) were identified by IR and H-1-NMR spectra. The number-average molecular weight (M(n)) was 110,000. The thermal stability, tensile strength, light resistance, and weatherability of MES were considerably better than those of the acrylonitrile-butadiene-St (ABS) copolymer.
Keywords:COPOLYMER