Graft copolymers of MMA (methyl methacrylate) with NRL (natural rubber latex) referred to as NR-g-PMMA have been prepared using CHP (cumene hydroperoxide)/TEPA (tetraetbylenepentamine) redox initiator. 1H NMR ...Graft copolymers of MMA (methyl methacrylate) with NRL (natural rubber latex) referred to as NR-g-PMMA have been prepared using CHP (cumene hydroperoxide)/TEPA (tetraetbylenepentamine) redox initiator. 1H NMR (proton nuclear magnetic resonance) and FTIR (Fourier transform infrared) analysis have confirmed the occurrence of graft copolymerisations of MMA onto NR that containing 30% and 50% of MMA monomer. The influence of coagulating agents such as formic acid, sulfuric acid and boiling water on the coagulation of NR-g-PMMA latices were investigated. These types of coagulating agent formed compact coagulum and the effect of NR-g-PMMA compounds on cure characteristics, physical properties and appearances were reported.展开更多
文摘Graft copolymers of MMA (methyl methacrylate) with NRL (natural rubber latex) referred to as NR-g-PMMA have been prepared using CHP (cumene hydroperoxide)/TEPA (tetraetbylenepentamine) redox initiator. 1H NMR (proton nuclear magnetic resonance) and FTIR (Fourier transform infrared) analysis have confirmed the occurrence of graft copolymerisations of MMA onto NR that containing 30% and 50% of MMA monomer. The influence of coagulating agents such as formic acid, sulfuric acid and boiling water on the coagulation of NR-g-PMMA latices were investigated. These types of coagulating agent formed compact coagulum and the effect of NR-g-PMMA compounds on cure characteristics, physical properties and appearances were reported.