RT Journal Article
T1 Measurement of the water vapor permeability of chitosan films: a laboratory experiment on food packaging materials
A1 Cazón Díaz, Patricia
A1 Morales Sánchez, Eduardo
A1 Velázquez, Gonzalo
A1 Vázquez Vázquez, Manuel
K1 Edible films
K1 Biopolymers
K1 Chitosan
K1 Polysaccharides
K1 Water vapor permeability
K1 3D printing
AB In recent years, the food industry has been undergoing major changes driven by new social and environmental demands. Nowadays, biodegradable packaging is perceived as the most feasible alternative for food packaging. Great efforts are being devoted to the development of new materials from agro-industrial wastes and byproducts that are opening new alternatives and trends in the biopolymer sector. The aim of this laboratory exercise is to provide a tool to motivate active learning of new technologies and trends in the chemistry of biopolymers. The presented guide introduces to undergraduate students to the basic concepts of polysaccharide-based biopolymers and the characterization of functional properties. This exercise is focused on barrier properties, specifically on water vapor permeability. Chitosan is used as an example of a biopolymeric matrix, and its synthesis and water vapor permeability measurement are described in detail. In addition, a guide for the 3D printing of a temperature-controlled permeability chamber is provided, which will allow the experiment to be carried out in less time as the equilibrium state of the system is not broken when the permeability cup is weighed. It is expected that this exercise and the complementary Supporting Information will be of great interest to biopolymer teaching and research laboratories
PB ACS Publications
YR 2022
FD 2022
LK http://hdl.handle.net/10347/29206
UL http://hdl.handle.net/10347/29206
LA eng
NO J. Chem. Educ. 2022, 99, 6, 2403–2408
NO The authors appreciate the funding support of Xunta de Galicia, within the postdoctoral fellowship granted to Patricia Cazón (ED481B-2021-040)
DS Minerva
RD 24 abr 2026