Kinetics and mechanism of polymerization of methyl methacrylate initiated by stibonium ylide |
| |
| Authors: | A K Srivastava and Ajey Kumar Chaurasia |
| |
| Institution: | (1) Department of Chemistry, H B Technological Institute, 208002 Kanpur, India |
| |
| Abstract: | Homopolymerization of methyl methacrylate (MMA) was carried out in the presence of triphenylstibonium 1,2,3,4-tetraphenyl-cyclopentadienylide
as an initiator in dioxane at 65°C±0·l°C. The system follows non-ideal radical kinetics (R
p
∝ M]1·4 I]0·44
@#@) due to primary radical termination as well as degradative chain-transfer reaction. The overall activation energy and average
value ofk
2
p
/k
t
were 64 kJmol−1 and 0.173 × 10−3 1 mol−1 s−1 respectively |
| |
| Keywords: | Triphenylstiboniumylide methyl methacrylate non-ideal radical kinetics mechanism |
| 本文献已被 SpringerLink 等数据库收录！ |
