贵阳学院化学与材料工程学院 2. 贵州师范学院化学与材料学院
纸质出版:2022
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张春梅, 李小龙, 王青, 等. 碳纳米管/壳聚糖弹性气凝胶的压阻性能[J]. 传感器与微系统, 2022,(10):10-12+17.
碳纳米管/壳聚糖弹性气凝胶的压阻性能[J]. 2022, (10): 10-12+17.
张春梅, 李小龙, 王青, 等. 碳纳米管/壳聚糖弹性气凝胶的压阻性能[J]. 传感器与微系统, 2022,(10):10-12+17. DOI: 10.13873/J.1000-9787(2022)10-0010-03.
碳纳米管/壳聚糖弹性气凝胶的压阻性能[J]. 2022, (10): 10-12+17. DOI: 10.13873/J.1000-9787(2022)10-0010-03.
具有优异导电性能的弹性气凝胶在压阻传感器领域具有广阔的应用前景。通过定向冷冻干燥法制备了具有单向取向结构的碳纳米管(CNT)/壳聚糖(CS)气凝胶。结果表明,所得气凝胶在取向方向上具有管状取向结构,而在垂直于取向方向是无规孔隙结构;CNT/CS气凝胶在上述两个方向上的电导率分别为9.25 S·m
-1
和5.88 S·m
-1
。高倍率扫描电镜(SEM)图片表明,CNT/CS气凝胶壁由卷曲的CNT相互缠绕连接而成的网络结构构成。在垂直于取向方向上,CNT/CS气凝胶表现出良好的回弹性能;在20%和40%两种应变作用下5个压缩循环回线基本重合;但是气凝胶在垂直于取向方向上以及应变大于60%时的应变回复能力较差。气凝胶的电阻变化量随应变的增加而增大,且电阻变化与应变变化呈线性关系。
具有优异导电性能的弹性气凝胶在压阻传感器领域具有广阔的应用前景。通过定向冷冻干燥法制备了具有单向取向结构的碳纳米管(CNT)/壳聚糖(CS)气凝胶。结果表明,所得气凝胶在取向方向上具有管状取向结构,而在垂直于取向方向是无规孔隙结构;CNT/CS气凝胶在上述两个方向上的电导率分别为9.25 S·m
-1
和5.88 S·m
-1
。高倍率扫描电镜(SEM)图片表明,CNT/CS气凝胶壁由卷曲的CNT相互缠绕连接而成的网络结构构成。在垂直于取向方向上,CNT/CS气凝胶表现出良好的回弹性能;在20%和40%两种应变作用下5个压缩循环回线基本重合;但是气凝胶在垂直于取向方向上以及应变大于60%时的应变回复能力较差。气凝胶的电阻变化量随应变的增加而增大,且电阻变化与应变变化呈线性关系。
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