|
二维码（扫一下试试看！） |
| Construction of Bentonite-reinforced Polyvinyl Alcohol/Nanocellulose Deep Eutectic Gel and Its Application in Strain Sensors |
| Received:March 23, 2025 Revised:April 08, 2025 |
| DOI：10.11981/j.issn.1000-6842.2025.03.45 |
| Key Words:deep eutectic solvents;cellulose nanofiber;strain sensor;human motion monitoring |
| Fund Project:国家自然科学基金（22068017，22468028）；云南省教育厅可降解塑料工程研究中心（KKPU202205001）；云南省基础研究项目（202301BE070001-034，202401AU070141）。 |
| Author Name | Affiliation | Postcode | | DU Lin | College of Chemical Engineering， Kunming University of Science and Technology， Kunming， Yunnan Province， 650000 | 650000 | | HU Jianquan | College of Chemical Engineering， Kunming University of Science and Technology， Kunming， Yunnan Province， 650000 | 650000 | | WANG Yida | College of Chemical Engineering， Kunming University of Science and Technology， Kunming， Yunnan Province， 650000 | 650000 | | LIU Yuxin* | College of Chemical Engineering， Kunming University of Science and Technology， Kunming， Yunnan Province， 650000
Degradable Plastic Engineering Research Center， Yunnan Province Education Department， Kunming， Yunnan Province， 650000 | 650000 |
|
| Hits: 929 |
| Download times: 1074 |
| Abstract: |
| Using a deep eutectic solvent （DES） as the antifreeze medium， based on the polymer hydrogen bond network， and coordination interection between zinc ions and the polyvinyl alcohol/cellulose nanofiber-bentonite （PVA/CNF-BT） gel matrix， a PVA/CNF-BT DES gel with both high mechanical strength and excellent freeze resistance was successfully constructed. The results showed that when the PVA addition amount was 10% （mass fraction relative to DES）， and the addition amounts of BT nanosheets and CNF （both mass fractions relative to PVA） were 0.6% and 20%， respectively， the tensile strength and break elongation rate of the gel material reached 3.35 MPa and 832%. Its ionic conductivity at room temperature and the extreme temperature of -38 ℃ was 0.24 and 0.23 mS/cm， respectively， demonstrating outstanding freeze resistance and low-temperature conductivity. Furthermore， the DEG-based strain sensor integrated from the PVA/CNF-BT DEG possessed a wide strain response range （0~1 000%）， high sensitivity （gauge factor could reach 3.36）， and durability over 300 strain cycles. When applied to monitor motion in human body parts such as the index finger， wrist， and elbow， the DES-based strain sensor exhibited excellent sensing performance. |
| View Full Text View/Add Comment Download reader HTML |
