INVESTIGADORES
MANSILLA Andrea Yamila
artículos
Título:
Effect of Nanoclay Addition on the Biodegradability and Performance of Starch-Based Nanocomposites as Mulch Films
Autor/es:
MERINO, DANILA; MANSILLA, ANDREA Y.; CASALONGUÉ, CLAUDIA A.; ALVAREZ, VERA A.
Revista:
JOURNAL OF POLYMERS AND THE ENVIRONMENT
Editorial:
SPRINGER/PLENUM PUBLISHERS
Referencias:
Año: 2019
ISSN:
1566-2543
Resumen:
The biodegradation and performance of potential agricultural mulch films prepared from native and oxidized corn starchnanocomposites with chitosan-modified bentonite were studied under simulated soil test conditions. Samples were removed atdifferent times and their wet and dry weights were registered. A photographic register of films appearance was also included.Bio-physicochemical changes along biodegradation progress were followed by scanning electron microscopy (SEM), Fouriertransform infrared spectroscopy (FTIR) and thermogravimetric analysis (TG). Results indicate that all samples degraded ina three step process and that they almost fully degrade by 100 days of testing. The chemical modification of starch and theaddition of fillers did not produce significant differences in biodegradation rate. Microbial attack, mainly by fungal microorganismsstarted at the end of the first week and produced a 50% weight loss in approximately 35 days. Biological assaysindicate that germination was negatively affected by proposed starch-based films.
