一种纤维素基导电稳定柔性薄膜的制备及性能研究
Preparation and Properties of a Cellulose-based Flexible Film with Conductive Stability
侯敏杰1
作者信息
- 1. 太原工业学院 材料工程系,山西 太原 030008
- 折叠
摘要
将多巴胺(DA)分子通过酰胺化反应引入纤维素纳米纤丝(CNF)表面,制得DA改性的纤维素纳米纤丝(DCF),然后将DCF和蒙脱土(MMT)结合得到高透明度的DCF/MMT薄膜材料,进一步将银纳米线(AgNWs)和氧化石墨烯(GO)通过真空抽滤的方式沉积在薄膜上,制备了纤维素基透明导电薄膜(DMAG).测试结果表明:DA分子的接枝并没有对CNF的形貌和晶态结构造成影响,制备出的MMT用量30%时DCF/MMT(DCF/MMT-30)薄膜保持了高的透光率(82.4%),并且在相对湿度100%环境下拉伸强度达49.5 MPa,相较于CNF/MMT薄膜,提高了64%.以此为基材组装的导电薄膜具有良好的透明性、导电性和导电稳定性.经历水浸泡或在高湿度环境(相对湿度 90%),DMAG膜表现出稳定的高导电性,其方块电阻分别为32 和38 Ω.该导电薄膜的制备可为透明电子器件的组装提供新思路.
Abstract
Dopamine molecules were introduced onto the surface of cellulose nanofibers(CNF)through amidation reaction,resulting in dopamine-modified cellulose nanofibers(DCF).High-transparency DCF/montmorillonite(MMT)film materials were prepared by combining DCF with MMT.Silver nanowires(AgNWs)and graphene oxide(GO)were further deposited on the film through vacuum filtration to prepare cellulose-based transparent conductive films.The test results showed that the grafting of dopamine molecules did not affect the morphology and crystalline structure of CNF.The prepared DCF/MMT film maintained a hightransmittance(82.4%)and exhibited a tensile strength of 49.5 MPa at a relative humidity of 100%,which was a 64%improvement compared to that of CNF/MMT film.The conductive films assembled with this material exhibited good transparency,conductivity,and electrical stability.The DCF/MMT/AgNWs/GO(DMAG)film demonstrated stable high conductivity after water immersion or exposure to high humidity(relative humidity of 90%),with the sheet resistances of 32 and38 Ω,respectively.The preparation of this conductive film provides a new approach for the assembly of transparent electronic devices.
关键词
纳米纤维素/蒙脱土/抗湿强度/透明导电膜Key words
nanocellulose/montmorillonite/moisture resistance/transparent conductive film引用本文复制引用
基金项目
山西省高等学校科技创新项目(2021L545)
山西省基础研究计划青年科学研究项目(20210302124130)
太原工业学院引进人才科研资助项目(2022KJ030)
出版年
2024
国家科技期刊平台
NSTL
万方数据