Am. Sarker et al., SYNTHESIS AND CHARACTERIZATION OF A NOVEL POLYMERIC SYSTEM BEARING A BENZOPHENONE BORATE SALT AS A NEW PHOTOINITIATOR FOR UV CURING, Macromolecules, 29(25), 1996, pp. 8047-8052
Polymeric photoinitiators bearing benzophenone triphenylbutyl berate s
alt as the side chain have been synthesized and characterized and thei
r activity measured in the photoinitiated polymerization of a bifuncti
onal monomer, diethylene glycol diacrylate. The results were compared
with a low-molecular weight model compound. At lower concentrations of
the requisite benzophenone moiety, the highest activity was observed
for the model compound, while at higher concentrations the homopolymer
was superior. For both cases, the lowest photoinitiation activity was
observed with significant induction period for copolymers with methyl
methacrylate when compared to the homopolymer. The results are discus
sed in light of the microenvironment of the initiator fragments in the
polymeric systems.