About this Engineering article

Multifunctional, Superelastic, and Environmentally Stable Sodium Alginate/mxene/polydimethylsiloxane Aerogels for Piezoresistive Sensor by Songjiu Han; Qirui Wu; Jundong Zhu; Jiayu Zhang; Anbang Chen; Yujia Chen; Xiaoxiang Yang; Jianren Huang; Lunhui Guan is a Engineering article available to read on EtoBox.

Aerogel sensors have drawn considerable interest in the recent research world. However, simultaneously maintaining superelasticity and an outstanding piezoresistive effect under changing environmental conditions remains challenging. Here, sodium alginate (SA) was used as a bonding agent for MXene nanosheets and polydimethylsiloxane (PDMS) as a reinforcing agent to prepare SA/MXene/PDMS (SMP) composite aerogel with excellent high conductivity, mechanical elasticity, reliable thermal insulation, and good hydrophobicity. The interaction between MXene nanosheets and SA enhances the 3D network framework of the aerogel. The aerogel with a layer-support network structure prepared by the modified directional freezing method showed light weight, high sensitivity (37.43 kPa−1), significant reversible compression (70%) and excellent fatigue resistance (60,000 cycles). The piezoresistive sensor based on SMP composite aerogel can quickly respond to pressure/strain signals, which can be further used for pulse beating, sound detection, motion monitoring, foot posture diagnosis and human health monitoring. Additionally, the MXene aerogel sensor based on carbon material with frequency response char

Author

Songjiu Han; Qirui Wu; Jundong Zhu; Jiayu Zhang; Anbang Chen; Yujia Chen; Xiaoxiang Yang; Jianren Huang; Lunhui Guan

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)