Study On Polymerization Of Styrene And Methyl Methacrylate By Copper (Ⅰ) Chloride/ethylenediamine/benzyl Chloride

In this paper, it explored using ethylenediamine as copper ( I ) chloride s ligand which is cheaper than bipyridine and studied the polymerization or copolymerization of styrene and methyl methacrylate initiated by copper(I) chloride /ethylenediamine/benzyl chloride. The studied contents mainly include the following aspects:1. At 110, the polymerization of styrene can get to 90% conversion for 6 hours and obtain polymer with high molecule weight (Mn=2. 3X105) and narrow polydispersity (MWD<1.6). Polymerization rate equation is Rp = kp ?[M] ?[Y]1/2 , and apparent activation energy of polymerization reaction is 50. 13kJ/mol. The effects of polymeration temperature and ratio of monomer with initiation system were also studied.2. It was suggested that the polymerization have relatively more efficiency when the ratio of copper(I) chloride/ ethylenediamine/ benzyl chloride is 1:2:1.3. The polymerization of methyl methacrylate also obtain polymer with high molecule weigh and narrow polydispersity. While using acetonitrile as solvent, the polymerization can get to higher conversion in same reaction time, and polymer have more narrow polydispersity.4. The copolymerization of styrene and methyl methacrylate can obtain polymer with high molecule weight and narrow polydispersity which is lower than 1. 8.