期刊
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
卷 57, 期 51, 页码 17417-17429出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.8b05020
关键词
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资金
- National Natural Science Foundation of China [51773086, 51573075, 21808098]
- Key Program for Basic Research of Natural Science Foundation of Shandong Province [ZR2018ZC0946]
- Natural Science Foundation of Shandong Province [ZR2018BB027]
- Project of Shandong Province Higher Educational Science [J16LC20, J18KA080]
Robust and self-healable nanocomposite hydrogels were realized by the encapsulation of components of photoinduced electron transfer-atom transfer radical polymerization (PET-ATRP) into surface-modified silica nanoparticles (SiO2). The prepared SiO2@P4VP was in the form of self-healing nanocomposite hydrogels, where 4-vinylpyridine (4VP) was polymerized through PET-ATRP with organic photocatalyst Rhodamine B. The modified nanoparticles were characterized by X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), and Fourier transform infrared (FT-IR) spectroscopy. The nanocomposite hydrogels can be healed rapidly and autonomously without any stimulation at ambient temperature. Specifically, the nanocomposite hydrogels have a tensile strength of about 2.90 MPa, which recovered to 77.0% after 12 h, and an elongation at break of about 730%. These self-healing hydrogels with cheap raw material, possessing better strength and self-healing performance, will have broad prospects.
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