材料科学
纳米复合材料
复合材料
碳纳米管
极限抗拉强度
渗流阈值
电阻率和电导率
色散(光学)
纳米管
扫描电子显微镜
渗透(认知心理学)
聚合物
电导率
物理化学
神经科学
工程类
化学
物理
光学
电气工程
生物
作者
Leema Rose Viannie,N.R. Banapurmath,Manzoore Elahi M. Soudagar,Ashis Kumar Nandi,Nazia Hossain,Ashwini Shellikeri,Vinita Kaulgud,M.A. Mujtaba,Sher Afghan Khan,Mohammad Asif
标识
DOI:10.1016/j.jece.2021.106550
摘要
In this study, the development of highly flexible polymer nanocomposite sheets using multi-walled carbon nanotube (MWCNT) in a poly (dimethylsiloxane) (PDMS) matrix has been presented. Solution processing technique was employed, and MWCNTs were dispersed in n-hexane, and PDMS is resulting in a homogenous dispersion (between 2 wt% and 10 wt%). Scanning electron micrograph (SEM) images show the distribution of MWCNTs within PDMS matrix, which form continuous conductive networks resulting in percolation threshold even at 2 wt% filler concentrations. The electrical conductivity of the fabricated nanocomposite sheets was found to be about 1.3–158.2 S/m. Samples with 2 wt% and 4 wt% filler concentrations exhibit excellent temporal stability both in ambient and vacuum conditions, with near-zero temperature coefficient of resistance. The nanocomposite sheets used for mechanical studies were made as per ASTM D-412-C standards. For an optimal filler concentration of 5.58 wt% can be observed with stiffness of 0.486 MPa, the tensile strength of 0.422 MPa, the electrical conductivity of about 39.5 S/m, and elongation up to 120%. Therefore, this filler concentration is most suited for fabricating flexible strain sensors with good conductivity and temporal stability.
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