Journal
FOOD PACKAGING AND SHELF LIFE
Volume 17, Issue -, Pages 162-170Publisher
ELSEVIER
DOI: 10.1016/j.fpsl.2018.06.007
Keywords
Biodegradable film; Starch; Polyvinyl alcohol; Drying; Water adsorption isotherm
Categories
Funding
- SEP-SES [511-6/17-2659]
Ask authors/readers for more resources
The preparation method to obtain biodegradable films has an important effect on their performance. The drying of film-forming solutions is a very important step usually ignored during the manufacturing of biodegradable films. The objective of this study was to evaluate the effect of the drying process (natural convection or forced convection) on the functional properties of films from polymers with different structure. The film-forming solutions were dried using airflow (forced convection) and no air circulation (natural convection). Films from polyvinyl alcohol (PVOH, with linear structure) and polymers with different degree of branching (potato starch and high amylose corn starch) were evaluated. Films dried in forced convection showed important changes in the water adsorption, mechanical and thermal properties. Drying under forced convection could have promoted the formation of intermolecular bonds during the rearrangement of the polymer chains resulting in films with greater barrier to water vapor and better mechanical performance.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available