Research On Preparation Of Porous Materials And Oil Absorption Performance

In recent years, oily sewage emission and the oil spill has become increasingly serious. Oil is difficult to be degraded, which causes a great inconvenience to the ecological environment and human beings. At the same time, oil problem also lead to the ecological environment getting more and more worse, the damage of oil pollution is also various. The method of clean the oily sewage emission has attracted the Scientific research personnel’s attention. Since the 1960s, researchers had started to research high oil absorption resins. Due to the unique crosslining structure and the performance of affinity for oil, a growing number of researchers focus on this material.In this article, we use the method of preparation of porous materials via concentrated emulsion templating. A kind of porous Styrene-acrylateco-polymer was successfully prepared by an concentrated emulsion templating method with using styrene and acrylate as a monomer, dvinylbenzene(DVB) as a crosslinking agent, SP80 as emulsifier, water as the dispersed phase, potassium sulfate as the stabilizer and a small amount of initiator in dispersed phase.1、The effect of the dispersed phase volume fraction, content of crosslinking agent, emulsifier volume fraction to the stability of concentrated emulsion was discussed. The result of the synthesis experiment showed the best reaction condition was 90% dispersed phase volume fraction,2.24% emulsifier concentration, which enabled the system to have the best stability and the porous materials had uniform hole number and bubble size.2、he effect of the raw material ingredient to the stability of concentrated emulsion system and the effect of the kind of copolymerization monomers and ratio of monomers on oil absorbency was obtained. The experimental results show that the length of acrylate with the alkyl side chain exert a great impact on stability of the system and the ability of oil absorbency. Long chain is advantageous to the porous material properties of oil absorption, but it also has a certain influence on the stability of system. When the ratio of monomer was 2:1, the system of copolymer styrene/Octadecyl methacrylate was stable, and the copolymer has the best oil absorption, which the oil absorption rates reached 2110%.3、The effect of content of crosslinking agent to the porous material and the stability of concentrated emulsion system was discussed. Surface morphology, the aperture and so on, was characterized respectively. Influence of crosslinking agent on the oil absorption rate of the resin was investigated. It was shown that in the system of copolymer styrene/ Methyl methacrylate the influence of the Content of crosslinking agent on the stability of the system was small. When the content of the DVB was 12%, the absorption rate of porous material reached the highest 2300%. In the system of copolymer styrene/Butyl methacrylate, when the content of the DVB was 15%, the absorption rate of copolymer the highest 2500%. In the system of copolymer styrene/lauryl methacrylate, when the content of the DVB was 14%, the absorption rate of copolymer the highest 2200%. In the system of copolymer styrene/Octadecyl methacrylate, when the content of the DVB was 15%, the absorption rate of copolymer the highest 2000%.4、The effect of Terpolymer to the porous material and the stability of concentrated emulsion system and to the oil absorption rate was discussed, and the ter-copolymer porous materials were characterized respectively. It showed that the higher relative contents of long chain had, the worse the stability of the system was. At the same time, oil absorption properties of terpolymer was lower than those of binary copolymer. Oil absorption rate of Terpolymer St/methyl methacrylate/Octadecyl methacrylate was up to 1824%.