Preparation And Properties Of Lipophilic Acrylate Polyelectrolyte Resin

In this article,an ion monomer(TTCMS)containing weakly coordinating ions was synthesized by quaternization reaction and anion exchange reaction on the basis of chlorine methyl styrene(CMS).Then the lipophilic acrylate polyelectrolyte resin was successfully copolymerized by TTCMS,butyl methacrylate(BMA)and lauryl methacrylate(LMA).The structure,morphology,thermal stability and absorption performances of polyelectrolyte resin were systemically investigated.Firstly,TTCMS was prepared by quaternization reaction and anion exchange reaction.The results of Fourier transform infrared spectroscopy(FTIR)and nuclear magnetic resonance(NMR)showed that TTCMS was prepared successfully.In the quaternization reaction,when the solvent was acetone,the mole ratio of triethylamine/CMS was 1.2:1,the reaction temperature was 50 °C and the reaction time was 6 h,the yield of quaternized product(TCMS)was highest.In the anion exchange reaction,when the solvent was acetone,the mole ratio of NaBPh4/TCMS was 1.6:1,the temperature was 25 °C and the reaction time was 8 h,the ion exchange rate was highest.Secondly,the lipophilic acrylate polyelectrolyte resin with TTCMS,BMA and LMA as monomers was successfully copolymerized by suspension polymerization.The results illustrated that the resin particles were irregular sphere with rough and porous surface.With the increase of ion monomer content,the surface of resin appeared more fold.Besides,polyelectrolyte resin showed good thermal stability with initial decomposition temperature at 300 °C.When water/oil=4.0:1,ω(dispersant)= 1.2%,ω(crosslinking agent)=0.4%,ω(ion monomer)=10%,the polyelectrolyte resin prepared under these conditions had excellent oil absorbencies.The results of oil absorbency tests showed that the polyelectrolyte resin not only had high oil absorbency to organic solvent,such as cyclohexane,tetrachloromethane,xylene and tetrahydrofuran,but also could absorb petrol,peanut oil,diesel oil and other oil products.The oil absorbency of resin to tetrachloromethane was up to 35 g/g.Besides,the resin had a fast oil-absorption rate and achieved the saturated oil absorbency within half an hour.Sustained release and reusability tests indicated that polyelectrolyte resin could prevent the volatilization of oil and be reused up to 10 times.Therefore,lipophilic acrylate polyelectrolyte resin in this study can be used as an efficient and recyclable oil-absorption material.