Journal
ACS APPLIED POLYMER MATERIALS
Volume 2, Issue 7, Pages 2541-2549Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsapm.0c00150
Keywords
chitosan; polyoxometalate; adhesive; conductive; self-healing; antibacterial
Funding
- National Natural Science Foundation of China [21304075]
- China Scholarship Council Fellowship [201706970002]
- Natural Science Basic Research Plan in Shaanxi Province of China [2020JM-420]
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In addition to conductivity, recent evidence suggests that adhesive, self-healing, and antibacterial properties are also important aspects of wearable force sensors. However, preparation of hydrogel with these combined aspects in a facile strategy is still a challenge. In this paper, a simple method is proposed to obtain adhesive, conductive, self-healing, and antibacterial chitosan-polyoxometalate (POM) hydrogel. First, silicotungstic acid (SiW) was added into a chitosan solution to form a chitosan-silicotungstic acid (CS/SiW) physical cross-link network. Second, the CS/SiW-poly(acrylamide) (PAM) double-network hydrogels were fabricated by the in situ polymerization of acrylamide (AM). The CS/SiW-PAM hydrogel indicated excellent repeatable adhesive capacity on the surface of various materials. The CS/SiW-PAM hydrogel also displayed highly sensitive conductivity upon strain. Moreover, the CS/SiW-PAM hydrogel had outstanding self-healing and antibacterial properties. As a result, it is envisioned that the present work will broaden the path for development of POM-based functional soft materials for various applications.
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