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Liquid Crystals Volume 48, 2021 - Issue 15
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Article

Study on electro-optical and adhesion properties of polymer dispersed liquid crystal films from thiol-ene click reaction

Yunxiao Rena Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, People’s Republic of ChinaView further author information
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Wei Hua Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, People’s Republic of China;b Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, People’s Republic of ChinaView further author information
,
Chang Sunc Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, People's Republic of ChinaView further author information
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Junyi Huangb Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, People’s Republic of ChinaView further author information
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Junmei Huc Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, People's Republic of ChinaView further author information
,
Jiyuan Shend Department of Applied Mechanics, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, People's Republic of ChinaView further author information
,
Wanli Hec Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, People's Republic of ChinaView further author information
,
Lanying Zhangb Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, People’s Republic of ChinaView further author information
,
Xiaotao Yuane School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, People's Republic of ChinaCorrespondence[email protected]
View further author information
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Meina Yua Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, People’s Republic of ChinaCorrespondence[email protected]
View further author information
&
Huai Yanga Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, People’s Republic of China;b Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, People’s Republic of ChinaView further author information
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Pages 2188-2199 | Received 07 Apr 2021, Accepted 25 May 2021, Published online: 20 Dec 2021
 
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ABSTRACT

In this work, polymer dispersed liquid crystal (PDLC) films, with good electro-optical and adhesion properties, were obtained by phase separation induced through thiol-ene click chemistry. The effects of liquid crystal content, thiol content and thiol functionality on the electro-optical and adhesion properties of the PDLC films were systematically investigated. It is found that adding an appropriate proportion of high-molecular-weight polymer thiol, Capcure 3–800 as the curing agent can effectively decrease the saturation voltage of the PDLC films. And when the content of Capcure 3–800 is 5.5 wt.%, the PDLC films can show the optimised electro-optical performance. Moreover, the adhesion properties between the two pieces of substrates and the PDLC films are related to the density of the polymer network.

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Disclosure of potential conflicts of interest

No potential conflict of interest was reported by the author(s).

Supplementary material

Supplemental data for this article can be accessed here.

Additional information

Funding

This work was supported by the National Key R&D Program of China [Grant Nos.2020YFE0100200, 2019YFC1904702], the Joint Fund of the Ministry of Education for Equipment Pre-research [Grant No.6141A02033238], the National Natural Science Foundation of China (NSFC) [Grant No.51903004].

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