UV and Fluorescence Characterization of Styrene and Methyl MethacrylatePolymerization

摘要

Polymerization of styrene and methyl methacrylate (MMA) were studied by UV andfluorescence spectroscopic techniques. Using a sharp decrease in the extinction coefficient at 250 nm and the fluorescence quantum yield at 308 nm of styrene following polymerization, styrene conversion in solution polymerization by UV and fluorescence measurements were found to correlate well with IR results monitoring the disappearance of vinyl groups, at three different temperatures (65, 70, and 75 deg C). The activation energy of about 6 kcal/mol was obtained. Using the decrease in UV absorbance of MMA during polymerization, solution polymerization of MMA was studied and compared with IR results. jg p2.