Effect of graphene oxide content on the tensile properties and swelling ratio of chitosan/xanthan gum/graphene oxide hydrogel films. (23rd July 2020)

• Record Type: Journal Article
• Authors: Kim, Dong-Won; Shchipunov, Yury; Kim, Gue-Hyun; Shin, Inho; Ha, Chang-Sik
• Is Part Of: Molecular crystals and liquid crystals. Volume 706(2020)
• Page Start: 72
• Page End: 78
• Publication Date: 2020-07-23
• Subjects: Chitosan -- graphene oxide -- hydrogel -- nanocomposites -- xanthan gum; Molecular crystals -- Periodicals; Liquid crystals -- Periodicals; Liquid crystals; Molecular crystals; Periodicals; 548
• DOI: 10.1080/15421406.2020.1743440
• Languages: English
• ISSNs: 1542-1406

Abstract

Abstract: In this study, chitosan (CS)/xanthan gum (XA)/graphene oxide (GO) nanocomposite hydrogels were prepared to enhance mechanical properties of CS/XA hydrogels. The hydrogels were characterized by Fourier-transform infrared spectroscopy (FT-IR) spectra, wide-angle X-ray diffraction (WXAD) patterns, thermogravimetric analysis, and universal testing machine. The swelling ratio of dried CS/XA and CS/XA/GO films were also measured in deionized water at 37 °C. The effect of GO content on the tensile properties and swelling ratio of CS/XA/GO hydrogel films were investigated. With addition of GO, tensile strength and modulus of CS/XA hydrogel films were improved without significant decrease of elongation at break, while the swelling ratio of CS/XA/GO films decreased with increasing GO contents.