Synthesis and photo-initiated polymerization of silicon-containing hybrid monomers
2011
A series of silicon-containing hybrid monomers which contained both vinyl ether group and allyl ether group had been
synthesized. The monomers' photo-polymerization kinetics was investigated with RTIR. Results showed that the hybrid
monomers could photo-polymerize effectively and both free radical and cationic polymerization processes were
improved. When PAG201 (a kind of cationic photo-initiator) was introduced into the monomers, the conversion of vinyl
ether double bond increased sharply. The final conversion was close to 100%, and at the 6 sec, the polymerization
achieved maximum. At the same time, the allyl ether double bond left. When 2-Isopropylthioxanthone (ITX, a kind of
free radical photo-initiator) was introduced into hybrid system containing PAG201, the final conversion of allyl ether
double bond and polymerization rate (R p ) increased obviously. It was demonstrated that the hybrid silicon-containing
monomers polymerized rapidly and completely with both of the free radical and cationic photo-initiators. The property
showed that the five monomers can be used in nanoimprint resist system or UV imaging materials.
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