[J. POLYM. SCI. PART A-POLYM. CHEM.] Reverse atom transfer radical solution polymerization of methyl methacrylate under pulsed microwave irradiation
writer：CHENG, ZP; ZHU, XL; CHEN, GJ; et al.
keywords：pulsed microwave irradiation, reverse atom transfer radical polymerization, living polymerization, methyl methacrylate, tetramethylethylenediamine, homogeneous, radical polymerization, atom transfer radical polymerization (ATRP), radiation
source：期刊
specific source：JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 40: 3823-3834, 2002
Issue time：2002年
The reverse atom transfer radical polymerization (RATRP) of methyl methacrylate (MMA) was successfully carried out under pulsed microwave irradiation (PMI) at 69 °C with N,N-dimethylformamide as a solvent and with azobisisobutyronitrile (AIBN)/CuBr2/tetramethylethylenediamine as an initiation system. PMI resulted in a significant increase in the polymerization rate of RATRP. A 10.5% conversion for a polymer with a number-average molecular weight of 34,500 and a polydispersity index of 1.23 was obtained under PMI with a mean power of 4.5 W in only 52 min, but 103 min was needed under a conventional heating process (CH) to reach a 8.3% conversion under identical conditions. At different [MMA]0/[AIBN]0 molar ratios, the apparent rate constant of polymerization under PMI was 1.5-2.3 times larger than that under CH.