Polymer 71 (2015) 93e101

Yuxuan Zhang ^{a, b,} Yong He ^{a, b,} Jinliang Yang ^{a, b, c,} Xueqin Zhang ^{a, b,} Roberta Bongiovanni ^{d, **,} Jun Nie ^{a, b, *}

A fluorinated photoinitiator, namely perfluorooctanoyl acid 2- [4-(2-hydroxy-2-methyl-propionyl)-phenoxy]-ethyl ester (F-2959) was synthesized and characterized. To increase the polymerization rate, fluorine groups were connected to the benzene ring rather than the hydroxyalkyl. Real time FTIR ****ysis was taken to study the ability of F-2959 to overcome oxygen inhibition. UVevis absorption spectroscopy, XPS, SEM, and multi-channel thermo detector were used to prove the migration of F-2959 in the formulations. During photopolymerization, the oxygen inhibition could be obviously decreased as the large amount of photoinitiator at the surface could consume oxygen in the air atmosphere. The fluorine compounds gathering on the surface also reduced the surface energy. By using this strategy, the film surface develops a wrinkled pattern with a low surface energy. And the wrinkled pattern may prove very useful in photopolymerization.