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Both tough and soft double network hydrogel nanocomposite based on o-carboxymethyl chitosan/poly(vinyl alcohol) and graphene oxide: a promising alternative for tissue engineering
, Article Polymer Engineering and Science ; Volume 60, Issue 5 , 2020 , Pages 889-899 ; Mazaheri Tehrani, Z ; Salami, H ; Seidi, F ; Motamedi, A ; Amanzadi, A ; Zayerzadeh, E ; Shabanian, M ; Sharif University of Technology
John Wiley and Sons Inc
2020
Abstract
A reinforced double network (DN) hydrogel as a candidate for skin scaffold was prepared. It consists of O-carboxymethyl chitosan, polyvinyl alcohol, honey, CaCl2, and graphene oxide. The various concentrations of CaCl2, namely, 30, 45, and 60 wt% were investigated. Besides, the GO content was studied as 3, 5, and 10 wt%. The structure of the DN was characterized by Fourier-transform infrared spectroscopy, thermogravimetric analysis, differential scanning calorimetry, X-ray diffraction, energy dispersive X-ray and Brunauer-Emmett-Teller were evaluated. The mechanical properties were studied, too. It showed that the DN with 45 wt% CaCl2 was optimized. Also, swelling mechanism was investigated....