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Molecules. 2016 Dec 30;22(1). pii: E43. doi: 10.3390/molecules22010043.

Effect of a Polymercaptan Material on the Electro-Optical Properties of Polymer-Dispersed Liquid Crystal Films.

Sun Y1, Zhang C2,3,4, Zhou L5, Fang H6, Huang J7, Ma H8, Zhang Y9, Yang J10, Zhang LY11,12, Song P13, Gao Y14,15, Xiao J16, Li F17, Li K18.

Author information

1
Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China. syj_anshan@sina.com.
2
Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China. zhangcuihong@pku.edu.cn.
3
Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing 100871, China. zhangcuihong@pku.edu.cn.
4
Department of Applied Statistics and Science, Xijing University, Xi'an 710123, Shaanxi Province, China. zhangcuihong@pku.edu.cn.
5
Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China. luoqiudehudie@163.com.
6
Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China. Fanghua0229@126.com.
7
Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China. jianhua_ustb@163.com.
8
Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China. mahaipeng6666@163.com.
9
Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China. 5896326123@163.com.
10
Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China. g20158323@xs.ustb.edu.cn.
11
Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China. zhanglanying@pku.edu.cn.
12
Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing 100871, China. zhanglanying@pku.edu.cn.
13
Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China. songping1985@163.com.
14
Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China. gaoyanzi@pku.edu.cn.
15
Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing 100871, China. gaoyanzi@pku.edu.cn.
16
Department of Applied Mechanics, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China. jiujiu@sas.ustb.edu.cn.
17
College of Medical Laboratory, Dalian Medical University, Dalian 116044, Liaoning Province, China. lifasheng@dmu.edu.cn.
18
Department of Applied Statistics and Science, Xijing University, Xi'an 710123, Shaanxi Province, China. likexuan@xijing.edu.cn.

Abstract

Polymer-dispersed liquid crystal (PDLC) films were prepared by the ultraviolet-light-induced polymerization of photopolymerizable monomers in nematic liquid crystal/chiral dopant/thiol-acrylate reaction monomer composites. The effects of the chiral dopant and crosslinking agents on the electro-optical properties of the PDLC films were systematically investigate. While added the chiral dopant S811 into the PDLC films, the initial off-state transmittance of the films was decreased. It was found that the weight ratio among acrylate monomers, thiol monomer PETMP and the polymercaptan Capcure 3-800 showed great influence on the properties of the fabricated PDLC films because of the existence of competition between thiol-acrylate reaction and acrylate monomer polymerization reaction. While adding polymercaptans curing agent Capcure 3-800 with appropriate concentration into the PDLC system, lower driven voltage and higher contrast ratio were achieved. This made the polymer network and electro-optical properties of the PDLC films easily tunable by the introduction of the thiol monomers.

KEYWORDS:

electro-optical properties; morphology; photopolymerization; polymer-dispersed liquid crystal

PMID:
28042836
PMCID:
PMC6155868
DOI:
10.3390/molecules22010043
[Indexed for MEDLINE]
Free PMC Article

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