Preparation and property of sandwich polymethacrylate based composite oil absorber

Sandwich polymethacrylate based composite oil absorber was prepared by suspension polymerization and semi-interpenetrating networks(semi-IPN) using hydroxyethyl methacrylate(HEMA) as crosslinker,and the correlation of its oil absorption rate,oil retaining rate,gel fraction and polymer-solvent interaction parameter was investigated.The structure and thermal properties of the composite oil absorber were characterized by using attenuated total reflection Fourier transform infrared spectroscopy and dynamic mechanical thermal analyzer.The results showed that there was physical cross-linking structure in the oil absorber.As the mass fraction of HEMA increases,more perfect semi-IPN crosslinking structure was formed.With appropriate amount of HEMA,the oil absorber has excellent oil-absorptive performance with maximum oil absorbency to toluene and trichloroethylene up to 7.5 g/g and 8.0 g/g respectively.