文章摘要
李禹欣,胡飞.淀粉基底银纳米线柔性透明导电薄膜的合成及光电性能[J].精细化工,2019,36(10):
淀粉基底银纳米线柔性透明导电薄膜的合成及光电性能
Synthesis and photoelectric properties of starch substrate silver nan-owire flexible transparent conductive films
投稿时间:2019-03-25  修订日期:2019-05-29
DOI:
中文关键词: 淀粉膜  银纳米线  导电膜  光电性能  柔性透明
英文关键词: starch film  silver nanowire  conductive film  photoelectric properties  flexible and transparent
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
作者单位E-mail
李禹欣 华南理工大学食品科学与工程学院 1103245148@qq.com 
胡飞 华南理工大学食品科学与工程学院 g95216@163.com 
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中文摘要:
      以天然可再生易降解的马铃薯淀粉为原料,合成可反复弯曲折叠的柔性透明基底膜,通过多元醇法制备导电银纳米线(AgNW),旋涂法均匀覆盖于淀粉基底膜表面,两者通过分子间作用力相结合,进而对产品形貌,构造及稳定性进行了分析,并探索了复合导电薄膜材料光电性能的影响规律和应用效能。试验获取的柔性基底膜具有92%透光率、3.92nm粗糙度,29.01MPa拉伸应力;导电银纳米线直径60nm,长度超过20um。银纳米线沉积密度对柔性透明导电薄膜的导电性、透光率及粗糙度均具有明显的影响。随着银纳米线沉积密度的增大,方块电阻减小、透光率呈线性下降趋势,粗糙度随之增大,当沉积密度超过300mg/m2时,方块电阻Rs低于22.6?/□,透光率T约65%,光电优值F.O.M高于35,是ITO导电膜的良好替代材料。将复合膜反复弯曲折叠方阻变化低于5%,热重分析发现热分解温度高于250℃,有利于对其进行进一步高温导电处理,放置于空气中随时间延长方阻略微增大。
英文摘要:
      Natural renewable and degradable potato starch was used as raw material to synthesize a flexible trans-parent film which can be repeatedly bent and folded. Conductive silver nanowires were prepared by pol-yol method and coated evenly on the surface of starch film by spin coating. The two are combined by in-termolecular force.The morphology, structure and stability of the product were analyzed and the influ-ence law and application efficiency of composite conductive film were explored. The light transmittance of the starch film obtained by experiment is 92%, the roughness is 3.92nm, and the tensile stress is 29.01MPa;Conductive silver nanowires are 60nm in diameter and over 20um in length. The deposition density of silver nanowires has obvious influence on the conductivity, light transmittance and roughness of flexible transparent conductive films. With the increase of the deposition density of silver nanowires, the square resistance decreases, the light transmittance shows a linear decreasing trend, and the rough-ness increases accordingly. When the deposition density exceeds 300mg/m2, the square resistance Rs is lower than 22.6 ?/□, the light transmittance T is about 65%, and the photoelectric excellent value F.O.M is higher than 35. Therefore, it is a good substitute material for ITO conductive films. When the compo-site film is repeatedly bent and folded, the change of the square resistance is less than 5%, thermogravi-metric analysis found that the thermal decomposition temperature is higher than 250 ℃ ,Which is fa-vorable for further high-temperature conductive treatment and the square resistance increases slightly with time when the composite film is placed in air.
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