Fluorescence technique for studying the sol-gel transition in the free-radical crosslinking copolymerization of methyl methacrylate and ethylene glycol dimethacrylate

Özet

The steady-state fluorescence technique was used to study the free-radical crosslinking copolymerization [1] of methyl methacrylate and ethylene glycol dimethacrylate in the absence and presence of toluene at 74° C. A sol-gel phase transition was observed and monitored by an excited aromatic molecule during the gelation of the above system. Bond percolation theory was employed to qualify the results [2,3]. The critical exponent and gel point were found to be 0.45 and 0.36 both in bulk and solution polymerization [4].