title: Effect of a Polymercaptan Material on the Electro-Optical Properties of Polymer-Dispersed Liquid Crystal Films.
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.
authors.affiliation: 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.
authors.forename: Yujian
authors.initials: Y
authors.lastname: Sun
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China. zhangcuihong@pku.edu.cn.|Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing 100871, China. zhangcuihong@pku.edu.cn.|Department of Applied Statistics and Science, Xijing University, Xi'an 710123, Shaanxi Province, China. zhangcuihong@pku.edu.cn.
authors.forename: Cuihong
authors.initials: C
authors.lastname: Zhang
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China. luoqiudehudie@163.com.
authors.forename: Le
authors.initials: L
authors.lastname: Zhou
authors.affiliation: Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China. Fanghua0229@126.com.
authors.forename: Hua
authors.initials: H
authors.lastname: Fang
authors.affiliation: 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.
authors.forename: Jianhua
authors.initials: J
authors.lastname: Huang
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China. mahaipeng6666@163.com.
authors.forename: Haipeng
authors.initials: H
authors.lastname: Ma
authors.affiliation: Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China. 5896326123@163.com.
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: 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.
authors.forename: Jie
authors.initials: J
authors.lastname: Yang
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China. zhanglanying@pku.edu.cn.|Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing 100871, China. zhanglanying@pku.edu.cn.
authors.forename: Lan-Ying
authors.initials: LY
authors.lastname: Zhang
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China. songping1985@163.com.
authors.forename: Ping
authors.initials: P
authors.lastname: Song
authors.affiliation: Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China. gaoyanzi@pku.edu.cn.|Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing 100871, China. gaoyanzi@pku.edu.cn.
authors.forename: Yanzi
authors.initials: Y
authors.lastname: Gao
authors.affiliation: Department of Applied Mechanics, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China. jiujiu@sas.ustb.edu.cn.
authors.forename: Jiumei
authors.initials: J
authors.lastname: Xiao
authors.affiliation: College of Medical Laboratory, Dalian Medical University, Dalian 116044, Liaoning Province, China. lifasheng@dmu.edu.cn.
authors.forename: Fasheng
authors.initials: F
authors.lastname: Li
authors.affiliation: Department of Applied Statistics and Science, Xijing University, Xi'an 710123, Shaanxi Province, China. likexuan@xijing.edu.cn.
authors.forename: Kexuan
authors.initials: K
authors.lastname: Li
mesh_terms: D000179:Acrylates / Q000737:chemistry*; D050866:Liquid Crystals / Q000737:chemistry*; D055095:Optics and Photonics; D055668:Photochemical Processes; D058105:Polymerization; D011108:Polymers / Q000737:chemistry*; D013438:Sulfhydryl Compounds / Q000737:chemistry*; D014466:Ultraviolet Rays
chemical_list: D000179:Acrylates; D011108:Polymers; D013438:Sulfhydryl Compounds; C036658:acrylic acid
keywords: electro-optical properties; morphology; photopolymerization; polymer-dispersed liquid crystal