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聚氧乙烯脱水山梨醇单油酸酯对聚合物网络液晶电光特性的影响
Effect of polyoxyethylene sorbitan monooleate surfactant on polymer-network liquid crystal display
- 液晶与显示 2018年33卷第5期 页码：381-388
- 作者机构：
河北工业大学 应用物理系, 天津 300401
- 作者简介：
[ "牧启辉(1989-), 男, 安徽铜陵人, 硕士研究生, 从事液晶器件方面研究。E-mail:18222902627@163.com" ]
孙玉宝, E-mail: sun_yubao@163.com
- 基金信息：国家自然科学基金(61475042);国家自然科学基金(11304074);国家自然科学基金(11274088);河北省自然科学基金(A2015202320);河北高校重点学科建设项目(GCC2014048);the National Natural Science Foundation of China(11304074);the National Natural Science Foundation of China(61475042);the National Natural Science Foundation of China(11274088);Natural Science Foundation of Hebei Province(A2015202320);Key Subject Construction Project of Hebei Province University(GCC2014048)
DOI：10.3788/YJYXS20183305.0381
中图分类号： TN141.9收稿日期：2017-11-15，
录用日期：2018-1-11，
纸质出版日期：2018-05
- 稿件说明：
移动端阅览
牧启辉, 郭玉强, 高亮, 等. 聚氧乙烯脱水山梨醇单油酸酯对聚合物网络液晶电光特性的影响[J]. 液晶与显示, 2018,33(5):381-388.
Qi-hui MU, Yu-qiang GUO, Liang GAO, et al. Effect of polyoxyethylene sorbitan monooleate surfactant on polymer-network liquid crystal display[J]. Chinese journal of liquid crystals and displays, 2018, 33(5): 381-388.
牧启辉, 郭玉强, 高亮, 等. 聚氧乙烯脱水山梨醇单油酸酯对聚合物网络液晶电光特性的影响[J]. 液晶与显示, 2018,33(5):381-388. DOI： 10.3788/YJYXS20183305.0381.
Qi-hui MU, Yu-qiang GUO, Liang GAO, et al. Effect of polyoxyethylene sorbitan monooleate surfactant on polymer-network liquid crystal display[J]. Chinese journal of liquid crystals and displays, 2018, 33(5): 381-388. DOI： 10.3788/YJYXS20183305.0381.
摘要
聚合物网络液晶一般有较大的阈值电压和饱和电压，有明显的迟滞效应，所以降低阈值电压与饱和电压，降低迟滞效应和增加对比度是研究的主要目标。表面活性剂的使用可以有效减小聚合物网络与液晶的相互作用，从而降低聚合物网络对液晶分子的锚定能，来达到降低阈值电压与饱和电压的效果。本文通过在聚合物网络液晶里掺入不同比例的表面活性剂（聚氧乙烯脱水山梨醇单油酸酯：TWEEN 80），来研究表面活性剂对聚合物网络液晶电光特性的影响。实验结果表明：在聚合物网络液晶里增加该种表面活性剂的比例达到10：1时，阈值电压可以降低11倍以上，饱和电压降低5倍以上，对比度有一个大的提高，迟滞效应也得到很大的改善。本文结果对提高PNLC的电光特性有重要的指导意义。
Abstract
In order to reduce the high threshold and saturation voltage
obvious hysteresis effect and increase the contrast ratio of Polymer Network Liquid Crystal (PNLC)
the surfactants are used to solve the above problems. The surfactant can reduce the interaction between the liquid crystal and polymer network. As a result
the anchoring energy of the polymer network is reduced
thus the lower threshold and saturation voltage of PNLC can be obtained. In this study
the different mass fractions of surfactant (Polyoxyethylene Sorbitan Monooleate:TWEEN 80) were added into PNLC
and the electro-optical properties of PNLC were investigated. The experimental results show that if the mass fraction of PNLC and surfactant is 10:1
the threshold voltage can be reduced by more than 11 times
and the saturation voltage is reduced by more than 5 times. Moreover
the contrast ratio is obviously improved
and the hysteresis effect is ameliorated as well. This work has an important guiding significance for the study to improve the electro-optical properties of PNLC devices.
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references
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