Evaluation of the piezoresistive behavior of multifunctional nanocomposites thin films

2014 IEEE 11th International Multi-Conference on Systems, Signals & Devices (SSD14) Pub Date : 2014-05-01 DOI:10.1109/SSD.2014.6808841

A. Benchirouf, Abdulkadir Sanli, I. El-Houdaigui, M. Bashorun, J. Ciers, C. Müller, O. Kanoun

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引用次数: 11

Abstract

The piezoresistive properties of thin films based on carbon nanotubes dispersed in conductive polymer were investigated. Conductive multiwalled carbon nanotubes / Poly (3,4-ethylenedioxythiophene) polymerized with poly(4-styrenesulfonate) (PEDOT:PSS) films were prepared and deposited on flexible polymer substrates (Kapton HN, 250 μm) by drop casting and the aqueous dispersions with different amounts of MWCNTs in PEDOT:PSS were prepared at different sonication times. The influences of the MWCNT load on the film properties such as electrical conductivity; strain sensitivity and hysteresis were investigated. Negative resistance coefficient was observed when the films are subjected to a force from 10 N to 110 N. Furthermore, it was observed that at low amounts of MWCNTs dispersed in PEDOT:PSS with sonication time of 15 min have better strain sensitivity then pure PEDOT:PSS and other prepared thin film composites. Moreover, the strain sensitivity was found to be strongly dependent on the MWCNT concentration. In general, MWCNT/PEDOT:PSS films have potential as a highly linear strain sensitive material.

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多功能纳米复合材料薄膜压阻性能的评价

研究了分散在导电聚合物中的碳纳米管薄膜的压阻性能。采用滴铸法制备了导电多壁碳纳米管/聚(3,4-乙烯二氧噻吩)与聚(4-苯乙烯磺酸酯)(PEDOT:PSS)薄膜，并将其沉积在柔性聚合物衬底(Kapton HN, 250 μm)上，并在不同超声时间制备了不同量的MWCNTs在PEDOT:PSS中的水分散体。MWCNT负载对薄膜电导率等性能的影响;研究了应变敏感性和迟滞性。在10 ~ 110 N的力作用下，薄膜的电阻系数为负。此外，在超声时间为15 min时，分散在PEDOT:PSS中的MWCNTs含量较低时，其应变敏感性优于纯PEDOT:PSS和其他制备的薄膜复合材料。此外，应变敏感性被发现强烈依赖于MWCNT浓度。总的来说，MWCNT/PEDOT:PSS薄膜具有作为高度线性应变敏感材料的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2014 IEEE 11th International Multi-Conference on Systems, Signals & Devices (SSD14)

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