Study on the properties of NR-g-(GMA-co-St) prepared by multi-monomers melt grafting

NR-g-(GMA-co-St) was prepared by melt grafting using glycidyl methacrylate(GMA) as grafting monomer,styrene(St) as grafting co-monomer,dicumyl peroxide(DCP) as radical initiator in single-screw extruder.The effects of the content of GMA,St and DCP and the grafting temperature on the grafting degree of NR and the mechanical properties of NR-g-(GMA-co-St) were studied.The results showed that,the grafting degree was the highest and NR-g-(GMA-co-St) had the best mechanical properties when the GMA/St/DCP was 8/4/0.3 and the grafting temperature was 160 ℃.The addition of St using as co-monomer significantly accelerated GMA grafting onto NR,furthermore,could effectively control the decomposition of NR.NR-g-(GMA-co-St) of FTIR proved that GMA grafted onto the NR molecular chain.