Flexible electrically conductive biomass-based aerogels for piezoresistive pressure/strain sensors

被引：208

作者：

Huang, Jieyu ^{[1
]}

Li, Dawei ^{[1
]}

Zhao, Min ^{[1
]}

Ke, Huizhen ^{[2
]}

Mensah, Alfred ^{[1
]}

Lv, Pengfei ^{[1
]}

Tian, Xiaojuan ^{[1
]}

Wei, Qufu ^{[1
,2
]}

机构：

[1] Jiangnan Univ, Key Lab Eco Text, Minist Educ, Wuxi 214122, Jiangsu, Peoples R China

[2] Minjiang Univ, Fujian Key Lab Novel Funct Text Fibers & Mat, Fuzhou 350108, Fujian, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2019年 / 373卷

基金：

美国国家科学基金会;

关键词：

Bacterial cellulose; PANI/BC/CH aerogel; Relative resistance change; Pressure sensors; Strain sensors; BACTERIAL CELLULOSE; IN-SITU; COMPOSITE; CHITOSAN; PERFORMANCE; MEMBRANE; SPONGE;

D O I：

10.1016/j.cej.2019.05.136

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Flexible, compressible and conductive aerogels were fabricated by incorporating polyaniline (PANI) into bacterial cellulose/chitosan (BC/CH) composites through facile freeze-drying technique. The PANI/BC/CH aerogel fabricated with the BC:CH weight ratio of 1:1 displayed the highest resistance response and showed extremely high sensitivity (1.41 kPa(-1)), low pressure detection (32 Pa), wide range of pressure deformation and extraordinary stability as a piezoresistive sensor. Polydimethylsiloxane (PDMS) was embedded into PANI/BC/CH aerogels to form PANI/BC/CH PDMS composites that displayed good stability under large mechanical deformation. Furthermore, applications of PANI/BC/CH aerogels and PANI/BC/CH/PDMS composites in piezoresistive sensors for wearable devices were also reported, which could detect human motions, ranging from joint movement to speech recognition, thus suggesting feasibility in health monitoring systems.

引用

页码：1357 / 1366

页数：10

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