An easily processable silver nanowires-dual-cellulose conductive paper for versatile flexible pressure sensors

Danning Fu; Ruibin Wang; Yang Wang; Qianyu Sun; Chen Cheng; Xiaohui Guo; Rendang Yang

doi:10.1016/j.carbpol.2022.119135

An easily processable silver nanowires-dual-cellulose conductive paper for versatile flexible pressure sensors

Carbohydr Polym. 2022 May 1:283:119135. doi: 10.1016/j.carbpol.2022.119135. Epub 2022 Jan 18.

Authors

Danning Fu¹, Ruibin Wang², Yang Wang¹, Qianyu Sun¹, Chen Cheng¹, Xiaohui Guo¹, Rendang Yang³

Affiliations

¹ State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China.
² College of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China. Electronic address: rbwang@usc.edu.cn.
³ State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China. Electronic address: rdyang@scut.edu.cn.

PMID: 35153011
DOI: 10.1016/j.carbpol.2022.119135

Abstract

To date, flexible pressure sensors built on silver nanowires (AgNWs) have attracted tremendous attention, owing to their versatile applications in wearable, human-interactive, health-monitoring devices. Cellulose and its derivatives, which show great promise in serving flexible pressure sensors as the desired substrate due to their natural abundance, biocompatibility, easy processibility, and low costs. Herein, we reported a rational strategy to design a silver nanowires-dual-cellulose conductive paper. Its morphology, chemical and crystal structures, thermal stability, mechanical performances, and electrical properties were carefully studied. The results suggested that good tensile properties (tensile strength ≤8.10 MPa), high electrical conductivity (≤ 1.74 × 10⁴ S·m^-1) with long-term stability, and good adhesion stability (bending cycles over 500) were obtained. Furthermore, the use of such conductive paper as substrate for versatile flexible pressure sensors was demonstrated, which exhibited fast response (~ 0.48 s) and high sensitivity, in response to finger motion, voice recognition, and human pulse, etc.

Keywords: Cellulose; Cellulose-based materials; Flexible pressure sensors; Nanocellulose.

MeSH terms

Cellulose / chemistry*
Electric Conductivity
Humans
Motion
Nanowires / chemistry*
Paper*
Pulse
Silver / chemistry*
Spectroscopy, Fourier Transform Infrared / methods
Tensile Strength
Wearable Electronic Devices*
X-Ray Diffraction / methods

Substances

Silver
Cellulose