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Fluorinated Hyperbranched Polymers as Additives in Cationic Photopolymerization

✍ Scribed by Marco Sangermano; Giulio Malucelli; Roberta Bongiovanni; Lorenzo Vescovo; Aldo Priola; Richard R. Thomas; Yongsin Kim; Charles M. Kausch

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
116 KB
Volume
289
Category
Article
ISSN
1438-7492

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✦ Synopsis

Abstract

Summary: Different fluorinated hyperbranched polymers (HBP) were synthesized starting from fluorinated oxetanes and employed as additives in cationic photopolymerization of epoxy monomers. As previously observed for other hydroxyl containing HBP, they interact with the polymeric carbocation through a chain transfer mechanism inducing an increase in the final epoxy conversion. High gel content values (>96%) for the photocured films confirm that the HBP additive is tightly crosslinked to the polymeric network. In the presence of this fluorine‐containing HBP it is possible to influence the bulk properties, as well as, the surface properties. The fluorinated HBP tends to migrate to the surface inducing an increase of hydrophobicity.

The hyperbranched polymer used in this work.

magnified imageThe hyperbranched polymer used in this work.

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