Physical-mechanical behavior and water-barrier properties of biopolymers-clay nanocomposites
| dc.contributor.author | Calambas, Heidy Lorena | |
| dc.contributor.author | Fonseca, Abril | |
| dc.contributor.author | Adames, Dayana | |
| dc.contributor.author | Aguirre Loredo, Yaneli | |
| dc.contributor.author | Caicedo, Carolina | |
| dc.date.accessioned | 2025-07-17T21:43:40Z | |
| dc.date.available | 2025-07-17T21:43:40Z | |
| dc.date.issued | 2021 | |
| dc.description.abstract | The preparation and characterization of biodegradable films based on starch-PVA-nanoclay by solvent casting are reported in this study. The films were prepared with a relation of 3:2 of starch:PVA and nanoclay (0.5, 1.0, and 1.5% w/v), and glycerol as plasticizer. The nanoclays before being incorporated in the filmogenic solution of starch-PVA were dispersed in two ways: by magnetic stirring and by sonication. The SEM results suggest that the sonication of nanoclay is necessary to reach a good dispersion along the polymeric matrix. FTIR results of films with 1.0 and 1.5% w/v of sonicated nanoclay suggest a strong interaction of hydrogen bond with the polymeric matrix of starch-PVA. However, the properties of WVP, tensile strength, percentage of elongation at break, and Young’s modulus improved to the film with sonicated nanoclay at 0.5% w/v, while in films with 1.0 and 1.5% w/w these properties were even worse than in film without nanoclay. Nanoclay concentrations higher than 1.0 w/v saturate the polymer matrix, affecting the physicochemical properties. Accordingly, the successful incorporation of nanoclays at 0.5% w/v into the matrix starch-PVA suggests that this film is a good candidate for use as biodegradable packaging. | |
| dc.identifier.citation | Calambas, H. L., Fonseca, A., Adames, D., Aguirre-Loredo, Y., & Caicedo, C. (2021). Physical-mechanical behavior and water-barrier properties of biopolymers-clay nanocomposites. Molecules, 26(21). https://doi.org/10.3390/MOLECULES26216734 | |
| dc.identifier.issn | 14203049 | |
| dc.identifier.uri | https://repositorio.usc.edu.co/handle/20.500.12421/7505 | |
| dc.language.iso | en | |
| dc.subject | Biodegradable polymers | |
| dc.subject | Mechanical properties | |
| dc.subject | Montmorillonite | |
| dc.subject | Nanocomposite | |
| dc.subject | Ultrasound-assisted | |
| dc.title | Physical-mechanical behavior and water-barrier properties of biopolymers-clay nanocomposites | |
| dc.type | Article |