期刊
ACS APPLIED MATERIALS & INTERFACES
卷 14, 期 43, 页码 49212-49223出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c15673
关键词
deep eutectic polymer (DEP) blend sys t e m; PVA; ChCl; high transparency; strain sensor
资金
- Major Project of Natural Science Foundation of Zhejiang Province of China
- National Natural Science Foundation of China
- [LD19E030001]
- [51890872]
In this study, deep eutectic polymer blends of a hydrogen bond acceptor quaternary ammonium salt and polyvinyl alcohol were fabricated and their miscibility, molecular interaction, and physical properties were investigated. The results showed that the deep eutectic blend had stable and repeatable resistance changes, indicating potential applications.
Wearable elastic electronic devices have attracted tremen-dous attention due to their monitoring capabilities for human motion detection. In this work, a hydrogen bond acceptor quaternary ammonium salt, choline chloride (ChCl), has been used to fabricate deep eutectic polymer (DEP) blends with polyvinyl alcohol (PVA). The miscibility, molecular interaction, and physical properties of PVA/ChCl DEP blends were investigated systematically. It is demonstrated that the deep eutectic of PVA/ChCl can be obtained by simple solution blending, and the melting points of both PVA and ChCl are reduced respectively due to the strong hydrogen bond between PVA and ChCl. Due to the elasticity of the PVA/ChCl elastomer and the response of ChCl ions to temperature and humidity, the fabricated sensor showed stable and repeatable resistance changes upon strain, temperature, and humidity variations. We hypothesize that the DEP blend system has potential applications in functional composites and the final PVA/ChCl elastomer composites exhibited high transparent, antifreeze, and recyclable capability, which may be promising for applications in soft/flexible devices.
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