A Novel Surface Modification Method upon Halloysite Nanotubes: A Desirable Cross-Linking Agent to Construct Hydrogels
作者：Yuangong Zhang, Libin Bai,* Cong Cheng, Qian Zhou, Zhou Zhang, Yonggang Wu and Hailei Zhang*
關鍵字：Halloysite nanotubes; Clay; Click reaction (-CNO/-OH); Hydrogels; Phosphorus adsorption
論文來源：期刊
發表時間：2019年
Halloysite nanotubes (Hal), a kind of attractive natural one-dimensional
nanomaterials, possess hollow tubular nanostructures, high aspect ratio and
difference structures between external and internal surfaces. Hal show
promising applications in various fields. A novel modification method was
facilely achieved in this study via the click reaction between -CNO and -OH
groups to functionalize vinyl groups onto the nanotubes, in which the product
was carefully characterized by solid-state nuclear magnetic resonance (SSNMR),
fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and
X-ray photoelectron spectroscopy (XPS). Then the modified Hal were used as cross-linking agent in the free radical copolymerization together with acrylamide
(AM) to afford a uniform chemical hydrogel. The obtained hydrogel Hal-IM-AM showed good
rheological property, low cytotoxicity and a much better absorption ability
upon phosphorus than original Hal.