期刊
POLYMER INTERNATIONAL
卷 61, 期 5, 页码 788-794出版社
WILEY
DOI: 10.1002/pi.4140
关键词
kraft lignin; polyurethane; carbon nanotubes; nanocomposites; chemical sensors
资金
- CICECO Associated Research Laboratory (University of Aveiro, Portugal)
- CESAM Associated Research Laboratory (University of Aveiro, Portugal)
- Portuguese Science and Technology Foundation
Modified eucalyptus kraft lignin doped with multiwall carbon nanotubes (MWCNTs) was used as a macromonomer in step-growth polymerization with tolylene 2,4-diisocyanate terminated poly(propylene glycol) with the aim of producing a conductive copolymer for all-solid-state potentiometric chemical sensor applications. The crosslinked elastomeric polyurethane obtained was characterized by Fourier transform infrared attenuated total reflection spectroscopy, scanning electron microscopy, tunnelling electron microscopy and atomic force microscopy. Doping of lignin-based polyurethane with MWCNTs produced a significant enhancement of its electrical conductivity without deterioration of thermal and viscoelastic properties. The polymer composite displayed a low percolation threshold at an MWCNT concentration of 0.18% (w/w), which was explained by the oriented distribution of MWCNTs along lignin clusters. All lignin-based polyurethanes doped with MWCNTs at concentrations above the percolation threshold are suitable for sensor applications. Copyright (c) 2012 Society of Chemical Industry
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据