Preliminary results on UV and high temperature exposure effects on the electro-optical properties of cellulose derivatives based PDLC type cells

P. L. Almeida, M. T. Cidade, M. H. Godinho, António C. Ribeiro, J. L. Figueirinhas

Research output: Contribution to journalConference article

Abstract

In this work we have studied, by light transmission, the effects of either UV or high temperature exposure on the electro-optical properties of cellulose derivatives based PDLC type cells prepared from hydroxypropylcellulose (HPC) and HPC cross-linked with 1,4 - diisocyanatobutane (BDI) (7,0 % w/w). The time evolution of the electro-optical properties of different cells, some under UV exposure, and others under high temperature (65°C), was recorded for times up to 7 days. Two sets of cells were analysed, one with electric field off during exposure, the other with electric field on. The results obtained show that no significant changes of the electro-optical properties of the cells occurred under the studied conditions, meaning that these systems are very stable and so good candidates for industrial applications.

Original languageEnglish
Pages (from-to)61-68
Number of pages8
JournalMolecular Crystals and Liquid Crystals Science and Technology, Section A: Molecular Crystals and Liquid Crystals
Volume351
DOIs
Publication statusPublished - 2000
Event5th European Conference on Liquid Crystals (ECLC 99) - Crete, Greece
Duration: 25 Apr 199930 Apr 1999

Keywords

  • Electro - optical properties
  • PDLCs
  • Solid films of cellulose derivatives

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