选择反射波宽可电场调控的纳米聚苯胺/液晶复合材料的制备及性能研究

项目名称： 选择反射波宽可电场调控的纳米聚苯胺/液晶复合材料的制备及性能研究

项目编号： No.51273022

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 一般工业技术

项目作者： 丁杭军

作者单位： 北京科技大学

项目金额： 80万元

中文摘要： 具有宽波反射的手征性向列（N*）液晶材料在一维光子晶体、液晶显示器的光增亮膜、建筑节能薄膜、军事上的红外屏蔽和激光屏蔽等方面具有重要的应用前景。如何设计和制备电场可控的N*相液晶薄膜是液晶材料领域一个重要的研究方向，有着重要的理论意义和实用价值。本项目中我们将制备一系列性能、尺寸、形貌不同的导电聚苯胺（PANI）纳米材料，将其分散于各向介电常数为负性的N*相液晶中，制备具有性能稳定的选择反射波宽电场可控的纳米PANI/液晶复合材料。研究纳米PANI与液晶分子之间的相互作用规律，揭示在电场作用下PANI纳米材料在复合材料的N*相中的运动规律及对液晶反射特性的影响机理，为拓展宽波反射材料的设计方法和PANI纳米材料在液晶领域中的应用提供实验支持和理论指导。

中文关键词： 聚苯胺；液晶；纳米复合材料；宽波反射；电场可控

英文摘要： Chiral nematic (N*) liquid crystal (LC) materials with wide bandwidth of selectively reflecting circularly palarized incident light have sparked an enormous interest due to their potential for advanced applications, such as one-dimensional photonic crystals, brightness enhancement films of LC displays, energy-efficiency films of civil buildings and infrared-shielding films of military armaments. Thus, how to design and prepare the electrically controllable N*-LC films possesses important theoretical significance and practical value, which has already become a prevalent part of LC research. Herein, a series of nano-structured polyaniline(PANI) with different sizes, morphologies and properties will be prepared and dispersed in a N*-LC with a negative dielectric constant to prepare nano-structured PANI/N*-LC composites with good stability and electrically controllable bandwidth. Then, the interactions between the nano-structured PANI and the LC molecules, and the characteristics of the motion of nano-structured PANI in the N*-LC composites with an electric field applied will be explored in details. Furthermore, the mechanism of the effects of PANI on the electrically controllable bandwidth will be elucidated. Implementation of this project will provide experimental foundation and theoretical guidance for preparing

英文关键词： Polyaniline；Liquid crystal；Nanocomposites；Broad-band reflection；Electrically Controllable