Gels, Volume 10, Issue 6 (June 2024) – 64 articles
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This study investigates the modifications of the main properties of gelatin films induced by functionalization with WO3 nanoparticles. Loading of polyvinylpirrolidone (PVP)-stabilized WO3 nanoparticles causes a drastic decrease in swelling, solubility, as well as the water vapor permeability of gelatin films. Moreover, WO3 nanoparticles influence the mechanical properties of the films, while the presence of PVP hinders the renaturation process of gelatin. All these properties are influenced by crosslinking with glutaraldehyde, which also reduces W cumulative release in distilled water. Interestingly, WO3-gelatin films present very efficient and stable photochromic properties, assuming an intense blue color after few seconds of light irradiation, with good resistance to several irradiation cycles. View this paper
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