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Photopolymerization of styrene,p-chlorostyrene, methyl methacrylate, and butyl methacrylate with polymethylphenylsilane as photoinitiator
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1996
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Resonance StabilizationSilyl RadicalsEngineeringResponsive PolymersSynthetic PhotochemistryOrganic ChemistryChemistryPolymersChemical EngineeringMacromolecular EngineeringMethyl MethacrylatePolymer ProcessingPhotopolymer NetworkPolymer ChemistryPhotochemistryPhotochemical PolymerizationPolymer SciencePolymer CharacterizationPolymerization KineticsPolymer Reaction
The rates of photochemical polymerization of styrene (St), p-chlorostyrene (Cl-St), methyl methacrylate (MMA), and butyl methacrylate (BMA) with polymethylphenylsilane (PMPS) as an initiator were measured. Polymethylphenylsilane is photodegrated to form silyl radicals that may initiate polymerization of vinyl monomers. Rate constants kp and kt have been determined for these systems. A good correlation (log P = α + βμ) of the resonance stabilization (P) of the chain radicals and the dipole moment (μ) of the monomers is observed for these polymerization systems. This equation may be used to estimate the resonance stabilization (P) of a monomer and the polymerization rate constant (kp). © 1996 John Wiley & Sons, Inc.