Abstract
In the present study, the effects of the two ratios of polyvinyl alcohol /Chitosan (1:1 and 3:1) and nano-silicon dioxide (nano-SiO2) (0, 0.5, and 1%) on structural and physicochemical properties of PVA/Chitosan/ nano-SiO2 nanocomposite films were investigated. Our findings showed that the treatments' water solubility (WS) in the presence of nano-SiO2 and higher PVA content was decreased, and the lowest amount was in P3C1-1% (59%). The addition of silica nanoparticles decreased the water vapor permeability (WVP) of films, and the lowest amount of WVP was for treatment with a ratio of 1:1 of PVA/chitosan and 1% nano-SiO2 (P3C1-1%) which was 3.08× 10-10 g m s-1m-2 Pa. Tensile strength (Ts) value was achieved 35.86 MPa in higher PVA content and 1% of nano-SiO2 (P3C1-1%) which was the highest. However, the light transmission value of all treatments did not differ greatly. According to the FTIR results, the appropriate interaction between both polymers and nano-SiO2 was observed in the concentration of 1% nano-SiO2 in P1C1. Eventually, significant improvement of structural and physicochemical properties of the films could achieve in higher PVA content and concentration of 1% of nano-SiO2. Based on these results, these nanocomposite films could be considered suitable for the packaging sector and preserve food quality.
Publisher
AMG Transcend Association
Subject
Molecular Biology,Molecular Medicine,Biochemistry,Biotechnology
Cited by
21 articles.
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