Grafting of Methyl Acrylate onto Carbon Black Surface Initiated by Potassium Diperiodatocuprate (III

Hydroxymethylated carbon black (HCB) was graft-copolymerized with methyl acrylate in an alkali solution, using potassium diperiodatocuprate (III) (DPC) as an initiator. The dependence of grafting parameters on temperature, time, monomer and initiator concentrations, and the volume ratio of water/dioxane were investigated. It was found that the grafting parameters were relatively higher than those by other methods, indicating that DPC-CB-OH redox pair was an efficient initiator for this grafting. The proof of grafting was obtained from infrared spectra. It was confirmed by transmission electron and scanning electron microscopies, and ultraviolet visible spectrophotometery techniques that the graft HCB has much better effect on dispersability and consistancy of copolymer than the carbon black (CB). At the same time we blended the graft HCB with PVC and improved its impact strength.