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Liquid Crystals Volume 44, 2017 - Issue 7
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Effects of functionality of thiol monomer on electro-optical properties of polymer-dispersed liquid crystal films

Yujian SunDepartment of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, People’s Republic of China;Anshan Normal University, Anshan, Liaoning Province, People’s Republic of ChinaView further author information
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Cuihong ZhangDepartment of Materials Science and Engineering, College of Engineering, Peking University, Beijing, People’s Republic of ChinaView further author information
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Hui CaoDepartment 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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Jiumei XiaoDepartment of Applied Mechanics, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, People’s Republic of ChinaCorrespondence[email protected]
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Hangjun DingDepartment of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, People’s Republic of ChinaCorrespondence[email protected]
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Fasheng LiCollege of Medical Laboratory, Dalian Medical University, Dalian, Liaoning Province, People’s Republic of ChinaView further author information
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Haifeng YuDepartment of Materials Science and Engineering, College of Engineering, Peking University, Beijing, People’s Republic of ChinaCorrespondence[email protected]
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Zhou YangDepartment 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
&
Huai YangDepartment of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, People’s Republic of China;Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, People’s Republic of China;Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing, People’s Republic of ChinaCorrespondence[email protected]
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Pages 1086-1092 | Received 10 Jul 2016, Accepted 14 Nov 2016, Published online: 25 Nov 2016
 
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ABSTRACT

In this paper, polymer-dispersed liquid crystal (PDLC) films which based on the acrylate and the thiol monomers were first prepared by ultraviolet-initiated polymerisation. The electro-optical properties and morphologies of the PDLC films were systematically investigated. The functionality of thiol monomers and their feed ratio showed great influence on the properties of the fabricated PDLC films because of the existence of competition between thiol–acrylate reaction and acrylate monomer polymerisation reaction. This made the polymer network and electro-optical properties of the PDLC films easily tunable by the introduction of the thiol monomers. When added four-functional thiol monomer PETMP with appropriate concentration into the PDLC system, lower driven voltage and higher contrast ratio were achieved.

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Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the Major Project of Beijing Science and Technology Program [Grant No.: Z141100003814011], the National Natural Science Foundation of China (NSFC) [Grant Nos.: 51272026, 51273022 and 51372029, 51333001].

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