期刊
MICROMACHINES
卷 13, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/mi13010125
关键词
biochar; PVA; conductive composites; microwave; piezoresistive
The development of responsive composite materials is an interesting challenge in material science and technology. This study proposes a new piezoresistive PVA composite using a cheap and conductive waste-derived cotton biochar. The electromagnetic properties and conductivity of the composites were evaluated, showing promising results with high conductivity values and observing hopping charge transport in biochar materials for the first time.
The development of responsive composite materials is among the most interesting challenges in contemporary material science and technology. Nevertheless, the use of highly expensive nanostructured fillers has slowed down the spread of these smart materials in several key productive sectors. Here, we propose a new piezoresistive PVA composite containing a cheap, conductive, waste-derived, cotton biochar. We evaluated the electromagnetic properties of the composites under both AC and DC regimes and as a function of applied pressure, showing promisingly high conductivity values by using over 20 wt.% filler loading. We also measured the conductivity of the waste cotton biochar from 20 K up to 350 K observing, for the first time, hopping charge transport in biochar materials.
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