Contact
    Start Publications Effect of SiO2 nanoparticle on the physical and chemical ...
    ←  Publication Finder
    Attension

    Effect of SiO2 nanoparticle on the physical and chemical properties of eco-friendly agar/sodium alginate nanocomposite film

    Year: 2019

    Journal: Int. J. Biol. Macromol., Volume 125, Nov-15, page 1289–1298

    Authors: Hou, Xiubin; Xue, Zhixin; Xia, Yanzhi; Qin, Yimin; Zhang, Guofang; Liu, Hongwu; Li, Kechang

    Organizations: National High Technology Research and Development Program of China [2010AA093701]; National Natural Science Foundation of China [50803030]; Program for Changjiang Scholars and Innovative Research Team in University [IRT0970]; Postdoctoral Science Special Foundation of China [201104581]; Postdoctoral Science Foundation of China [20100471495]; Program for Excellent Innovative Research Team of Shandong Province, China [TD200902]

    Keywords: Physiochemical properties; Food packaging; Nanocomposite film

    Agar/sodium alginate (AG/SA) nanocomposite films were prepared using solution casting method in presence of various concentrations of nano-SiO2 (2.5, 5, 7.5, and 10 wt%). The effect of nano-SiO2 concentration on the nano composite film was investigated. The result of Fourier transform infrared (FTIR) illustrated the formation of hydrogen bonding between nano-SiO2 and polysaccharide. As nano-SiO2 concentration rose from 0 to 10 wt%, the tensile strength and elongation at break all increased up to maximum, respectively. The tensile strength and elongation at break of film containing 10 wt% nano-SiO2 increased by 65.29% and 60.38% respectively when compared to those of film prepared without nano-SiO2. The reason for enhancing in tensile strength might be related to the formation of molecular interaction. The film containing 2.5 wt% nano-SiO2 had maximum water contact angle and minimum water vapor permeability among those of all films prepared in this work. However, the film containing 10 wt% nano-SiO2 had minimum swelling degree and water solubility, further demonstrating the formation of strong interaction. The addition of nano-SiO2 improved the properties of film against UV light and thermal stability. Overall, the addition of nano-SiO2 enhanced the mechanical properties, water resistance and thermal stability of polysaccharide film. (C) 2018 Elsevier B.V. All rights reserved.
    View publication