Preparation And Properties Of High Oil-absorbing Resin

Oil spill on the Sea and oily sewage emission have been causing more and moreserious environmental pollution. To prepare clean and highly efficient cleanupmaterials has attracted extensive interests. Highly oil-absorbing resins have beenwidely studied and applied for their excellent properties such as lower densitycompared to water, good absorption selectivity of oil over water, fast oil-absorptionrate, high oil-absorption capacity and holding oil efficiency, and convenient shippingand storage etc.At present high oil absorption resins of polyacrylate copolymers have widelybeen studied, but relatively, few homopolymers was reported. So in this thesis,acrylate oil absorption resin is selected as a study subject and three kinds ofhomopolymer acrylate of high oil absorption resins have been prepared by using aradical-initiated composite emulsion polymerization procedure.1. A kind of highly oil-absorbing resin based on long-chain alkyl acrylate wassuccessfully prepared by an emulsion polymerization method using laurylmethacrylate as a monomer, N，N’－methylene bisacrylamide as a crosslinking agent,OP-10and sodium dodecyl benzene sulfonate as composite emulsifier. Surfacemorphology, thermal stability and chemical composition of the prepared resin werecharacterized respectively by scanning electron microscopy (SEM), thermal gravityanalysis (TG) and infrared spectroscopy (IR). Experimental conditions influencingoil-absorbing power of the resin and oil-absorption dynamic were discussed. Themaximum oil absorption rates of the high oil-absorption resin with good thermalresistance respectively reach43.6g/g and37.1g/g for diesel oil and kerosene andholding oil efficiency exceeded95%.2. A kind of high oil-absorbing resin base short-chain alkyl acrylate wassuccessfully prepared by an emulsion polymerization procedure using butylmethacrylate as a monomer, N，N’－methylene bisacrylamide as a crosslinking agent,OP-10and sodium dodecyl benzene sulfonate as composite emulsifier, ethyl acetateas the porogen. Surface morphology, thermal stability and chemical composition ofthe prepared resin was characterized respectively by scanning electron microscopy(SEM), differential scanning calorimetry (TG/DSC) and infraredspectroscopy (IR). Influences of the amount of porogen and the drying time on theoil absorption rate of the resin and resin regenerative properties were investigated. Itwas shown that when the amount of the porogen was50%of the monomer and thedrying time was about four days, the resin had a highest oil absorption rate. Andafter many swelling/deswelling circles, oil absorption rate maintained stable.3. CNT-ploy (butyl methacrylate) composite resin was prepared by aradical-initiated emulsion polymerization method. Surface morphology,microstructure, thermal stability and chemical composition of the prepared resinwere characterized respectively by scanning electron microscopy (SEM),transmission electron microscope (TEM), differential scanning calorimetry(TG/DSC) and infrared spectroscopy (IR). Effects of the amount of carbonnanotubes, the drying time on the oil absorption rate were discussed, regenerativeproperties and Gel fraction of the resin were studied as well. Addition of carbonnanotubes was helpful to improving oil absorption rate of the resin and strengtheningthe stability of the three-dimensional network structure of the resin. Withswelling/deswelling cycle number increasing, the oil absorption rate of the resinslowly increased, at last reached a stable value. What’s more, the resin kept betterrigidity and was very easy to be treated after absorbing oil.