Study on Synthesis of Co/Styrene and Performance of Polyketone

Study on Synthesis of Co/Styrene and Performance of Polyketone
　　Polyketone was prepared by the copolymerization of carbon monoxide (CO) and styrene (ST) has good mechanical strength and excellent performance in other areas. But its expensive price of catalyst constrained progress of the research. In this paper we studied the use of the recycling with the polymer-supported catalyst, in order to effectively lower the cost of the experiment;In order to improve the machined performance of the polyketone—STCO , the third monomer was added into copolymerization system of CO and styrene.The crosslinked polymer polyacrylonitrile (PAN) was synthesized by suspension polymerization using acrylonitrile (ANT) Ball Neodymium Magnets and divinylbenzene (DVB). Effects of conditions on the polymerization of PAN particle size and stiffness were investigated. Polyketone was prepared by the copolymerization of carbon monoxide (CO) and styrene (ST) catalyzed by PAN resin-supported palladium acetate. The resin-supported catalyst and the copolymerization product were characterized by infrared spectroscopy (IR) and Scanning Electron Microscopy (SEM). Effects of components of catalytic system and reaction time on the catalytic activity were studied. The reusability of the resin-supported catalyst was also investigated. Results indicated that the resin-supported catalyst has catalytic property and the mostest yield of polyketone was 6.2348g.The crosslinked polymer polystyrene was synthesized by suspension polymerization using styrene and divinylbenzene and the polymer-based chelating nitrogen ligands was synthesized from the polystyrene.
　　Polyketone was prepared by the copolymerization of carbon monoxide (CO) and styrene (ST) catalyzed by polymer-based chelating nitrogen ligands resin-supported palladium acetate. The resin-supported catalyst and the copolymerization product were characterized by infrared spectroscopy (IR) and Scanning Electron Microscopy (SEM). Effects of components of catalytic system and reaction time on the catalytic activity were studied. The reusability of the resin-supported catalyst was also investigated. The resin-supported catalyst has catalytic property http://www.chinamagnets.biz when it had been used in 5th time. The yield of polyketone was 8.6606g when the amount of resin was 0.5g and the palladium acetate was 22.4mg. In order to improve the machined performance of the polyketone—STCO,the third monomer—methyl methacrylate was added into copolymerization system of CO and styrene. It was catalyzed by palladium acetate and rare earth multiplex catalyst system. The effect of amount of the third monomer—methyl methacrylate on the thermodynamics performance of the production was studied primary. The polymer was characterized by NMR、IR, DSC and TG. Result showed that the yield was the linear copolymer of carbon monoxide, styrene and methyl methacrylate. The machined performance was improved effectively after importing methyl methacrylate.