title: Chitin-natural clay nanotubes hybrid hydrogel.
abstract: Novel hybrid hydrogel was synthesized from chitin NaOH/urea aqueous solution in presence of halloysite nanotubes (HNTs) via crosslinking with epichlorohydrin. Fourier transform infrared (FT-IR) spectra and atomic force microscopy (AFM) results confirmed the interfacial interactions in the chitin-HNTs hybrid hydrogel. The compressive strength and shear modulus of chitin hydrogel were significantly increased by HNTs as shown in the static compressive experiment and rheology measurement. The hybrid hydrogels showed highly porous microstructures by scanning electron microscopy (SEM). The swelling ratio of chitin hydrogel decreased because of the addition of HNTs. The malachite green's absorption experiment result showed that the hybrid hydrogel exhibited much higher absorption rate than the pure chitin hydrogel. The prepared hybrid hydrogel had potential applications in waste treatment and biomedical areas.
authors.affiliation: Department of Materials Science and Engineering, Jinan University, Guangzhou 510632, China.
authors.forename: Mingxian
authors.initials: M
authors.lastname: Liu
authors.forename: Yun
authors.initials: Y
authors.lastname: Zhang
authors.forename: Jingjing
authors.initials: J
authors.lastname: Li
authors.forename: Changren
authors.initials: C
authors.lastname: Zhou
mesh_terms: D000327:Adsorption; D000538:Aluminum Silicates / Q000737:chemistry*; D002686:Chitin / Q000737:chemistry*; D000077215:Clay; D019245:Compressive Strength; D004548:Elasticity; D020100:Hydrogels / Q000138:chemical synthesis*; D018625:Microscopy, Atomic Force; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure; D016062:Porosity; D017550:Spectroscopy, Fourier Transform Infrared; D014783:Viscosity; D014867:Water
chemical_list: D000538:Aluminum Silicates; D020100:Hydrogels; D014867:Water; D002686:Chitin; D000077215:Clay