Effect of plasticization of poly(vinyl cinnamate) on liquid crystal orientation stability

Hyundae Hah, Shi Joon Sung, Ki Yun Cho, Won Sun Kim, Yong Cheol Jeong, Jung Ki Park

Research output: Contribution to journalConference articlepeer-review

Abstract

A cinnamate group is a well-known compound group used in the dimerization reaction by ultraviolet irradiation, and cinnamate polymers are studied as photoalignment materials. In this study, the radical reaction of cinnamate side groups attached to a flexible polymer backbone is considered feasible using thermal energy. To induce the thermal reaction of cinnamate side groups, we modified the flexibility of poly(vinyl cinnamate) by introducing a plasticizer into the polymers and investigated the thermal reaction behavior of cinnamate side groups. The plasticization of poly(vinyl cinnamate) makes the induction of the thermal reaction of cinnamate side groups easier than that of unmodified poly(vinyl cinnamate). The thermal reaction of cinnamate side groups is closely related to the enhancement of the thermal stability of the liquid crystal orientation of polymer films with polarized UV irradiation.

Original languageEnglish
Pages (from-to)860-863
Number of pages4
JournalDigest of Technical Papers - SID International Symposium
Volume37
Issue number2
DOIs
StatePublished - 2006
Event44th International Symposium, Seminar, and Exhibition, SID 2006 - San Francisco, CA, United States
Duration: 4 Jun 20069 Jun 2006

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