Preparation and oil-absorptivity of crosslinked polymers containing stearylmethacrylate, 4-t-butylstyrene, and divinylbenzene

The crosslinked polymers, poly(stearylmethacrylate-co-divinylbenzene) [CP(S MA-co-DVB)] and poly(t-butylstyrene-co-divinylbenzene) [CP(tBS-co-DVB)], an d CP(SMA-co-DVB)/PtBS IPNs, were prepared by the polymerization of correspo nding monomer pairs in the presence of BPO. The structures and thermal prop erties of CP(SMA-co-DVB), CP(tBS-co-DVB), and the IPN were determined by FT -IR, DSC, and TGA. The oil-absorptivities of CP(SMA-co-DVB) and CP(SMA-co-DVB)/PtBS IPN decrea sed with increasing concentrations of DVB and tBS: respectively. The highes t oil-absorptivities of CP(SMA-co-DVB) and the IPN(PtBS : 25%) were 615 % a nd 330 %, respectively. The toluene absorptivity of the synthesized polymer s decreased in following order : CP(tBS-co-DVB) > CP(SMA-co-DVB) > IPN(PtBS : 25 %), IPN(PtBS : 50 %) > IPN(PtBS : 75 %) at immersion above 60 min.