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Liquid Crystals Volume 37, 2010 - Issue 3
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Original Articles

Effects of the chain length of crosslinking agents on the electro-optical properties of polymer-dispersed liquid crystal films

Miki Kashima Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
,
Hui Cao Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
,
Huijing Liu Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
,
Qingyong Meng Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
,
Ding Wang Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
,
Fasheng Li Department of Chemistry, Dalian Medical University, Liaoning, 116027, China
&
Huai Yang Department of Chemistry, Dalian Medical University, Liaoning, 116027, ChinaCorrespondence[email protected]
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Pages 339-343 | Received 19 Nov 2009, Accepted 17 Dec 2009, Published online: 04 Mar 2010
 
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Abstract

Polymer-dispersed liquid crystal (PDLC) films were prepared by photochemical polymerisation from an ultraviolet-curable monomer/crosslinking agent/initiator/liquid crystal (LC) mixture. The influences of the chain length of crosslinking agents on the PDLC system have been studied. The microstructures of the PDLC films were strongly influenced by the chain length of the crosslinker, which in turn influences the electro-optic properties of PDLC films. It is proved that adjusting the chain length of the crosslinking agents and the LC content can produce PDLC films that have good electro-optic properties with a lower LC content.

Acknowledgements

This research was financially supported by the National Natural Science foundation (Grant No. 20674005 and 50973010), the Key Program for Panel Display of the 863 Program of China (Grant No. 2008AA03A318) and the National Key Technology Program (Grant No. 2007BAE31B00).

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