Preparation of highly oil absorptive resin poly (butyl methacrylate-styrene) and its oil absorption performance

The highly oil absorptive resin was prepared by suspension polymerization of using butyl methacrylate (BMA) and styrene (St) as the monomer, divinylbenzene (DVB) as the crosslinking agent, azodiisobutyronitrile (AIBN) as the initiator, polyvinyl alcohol (PVA) as the dispersing agent and water as the dispersed phase in this paper. Effects of mass ratio of monomers, crosslinking agent dosage and initiator dosage on resin properties were investigated by the orthogonal test. The results show that the oil absorption capacity of the synthesized resin is as high as 14.12 g·g^-1 when the mass ratio between BMA and St is 5:5, the mass fraction of the crosslinking agent, initiator and dispersant are 0.5%, 2% and 2% of the total monomer, respectively. Meanwhile, through the adsorption kinetics study, it was found that the above resin has the maximum oil absorption rate. In addition, the TG and reusability of oil absorption experiments show that the resin can be used repeatedly many times, the oil absorption amount of the fifth reused times can reach 93% oil absorption amount of the first time.