Water vapor permeability of chitosan/zeolite composite films as affected by biopolymer and zeolite microparticle concentrations

Abstract:

This work evaluated the effect of chitosan and zeolite microparticle concentrations on the water vapor permeability of composite films. In addition, others chemical, thermal, and physical properties of selected films were determined. Chitosan/zeolite composite films were prepared via the solution casting method using chitosans from chitin from common lobster (Panulirus argus) (77 and 275 kDa and ~ 75% of deacetylation degree) and natural zeolite (Ø = 35–45 µm). Chitosan concentration (1.5–2.0% w/v), zeolite microparticle concentration (0.0–7.0% w/w of chitosan), and molecular weight (MW) of chitosan were selected as factors through an IV optimal response surface design for the best variant of film based on the water vapor permeability (WVP). The WVP increased with an increase in the chitosan and zeolite concentration as well as the MW, being the film obtained from 1.5% (w/v) of chitosan (77 kDa) and 3 …

Año de publicación:

2020

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