Chem. J. Chinese Universities ›› 2004, Vol. 25 ›› Issue (10): 1945.

• Articles • Previous Articles     Next Articles

Rapid Living Free-Radical Polymerization of Methyl Acrylate Under 60Co γ-ray Irradiation in the Presence of Benzyl 1H-Imidazole-1-Carbodithioate

HUA Dao-Ben, BAI Ru-Ke, LU Wei-Qi, PAN Cai-Yuan   

  1. Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
  • Received:2003-07-29 Online:2004-10-24 Published:2004-10-24

Abstract: The free radical polymerization of vinyl monomers under 60Coγ-ray irradiation(52.5 Gy/min) in the presence of benzyl 1H-imidazole-1-carbodithioate(BICDT) was studied. The polymers were characterized by GPC and 1H NMR. The results show that the molecular weight increases linearly with the increase of the monomer conversion, the molecular weight distribution(MWD) is narrow and a linear relationship between ln([M]0/[M]) and polymerization time exists. All of these evidences indicate that the polymerization of MA is a living free radical polymerization. It is worthy to be noticed that the polymerization of methyl acrylate(MA) is quite fast, molecular weight(M w) is as large as 39 600 g/mol at 68% conversion with Mw/ Mn=1.08 within 68 min.

Key words: Benzyl 1H-imidazole-1-carbodithioate, Rapid living free radical polymerization, γ-ray irradiation

CLC Number: 

TrendMD: