Alginate–calcium films: Water vapor permeability and mechanical properties as affected by plasticizer and relative humidity

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Effect of glycerol and corn oil on physicochemical properties of polysaccharide films – A comparative study (2012, background): “Glycerol changes the polymer network creating mobile regions with greater interchain distances, promoting water clustering (Diab, Biliaderis, Gerasopoulos, & Sfakiotakis, 2001; Olivas & Barbosa-Cánovas, 2008), thus increasing the moisture content in the films.”
Perspectives on Utilization of Edible Coatings and Nano-laminate Coatings for Extension of Postharvest Storage of Fruits and Vegetables (2016, background): “Olivas and Barbosa-Cánovas [88] carried out a similar study, where the effect of four plasticizers (fructose, glycerol, sorbitol and polyethylene glycol) was evaluated on the mechanical properties and water vapor permeability (WVP) of alginate coatings.”
Improved barrier and mechanical properties of novel hydroxypropyl methylcellulose edible films with chitosan/tripolyphosphate nanoparticles (2009, background): “To respond to this latter demand, the food industry makes use of several biodegradable polymer-based edible films from food-grade proteins, polysaccharides, and lipids that could potentially serve as edible packaging materials (Olivas and Barbosa-Canovas, 2008; Sothornvit et al., 2007).”