Melt grafting copolymerization of glycidyl methacrylate onto acrylonitrile-butadiene-styrene (ABS) terpolymer

摘要

The grafting copolymerization of glycidyl methacrylate (GMA) onto acrylonitrile-butadiene-styrene (ABS) terpolymer was carried out using the melt grafting process. Infrared (IR) spectra,~(1)H nuclear magnetic resonance spectra, and elemental analysis results confirmed that GMA was successfully grafted onto the ABS backbone. The grafting occurred at the butadiene region of ABS, and a reaction mechanism has been proposed. The influencing factors of the reaction, such as GMA concentration, the initiator content, and the presence of GMA carrier and comonomer on the grafting copolymerization, were also studied. Results indicated that the preparation of ABS-g-GMA can be carried out by melt extrusion in the presence of a GMA carrier, and a high grafting degree can be obtained when the grafting process is carried out in the presence of styrene.