Influence of macroinitiator’s glass transition temperature on the response times of polymer dispersed liquid crystals |
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Authors: | Wenjie Yang Tian Lan Senlin Xia Lipeng Ma |
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Institution: | State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu, People’s Republic of China |
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Abstract: | Glass transition temperature (Tg), an important parameter of polymer, was reported to have great influence on the electro-optical properties of polymer dispersed liquid crystals (PDLCs). In this study, macroinitiators with different Tg were synthesised by reversible addition fragmentation chain transfer polymerisation, and used to prepare PDLCs with different Tg block chains. The effect of different Tg of the block chains on response times was investigated. It was found that rise time decreased and decay time increased with the decrease of the block chain’s Tg. We proposed a possible mechanism by which Tg of the block chains influence response times. |
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Keywords: | polymer dispersed liquid crystals glass transition temperature response times macroinitiators |
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