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- Title
Biodegradable Biocomposite of Starch Films Cross-Linked with Polyethylene Glycol Diglycidyl Ether and Reinforced by Microfibrillated Cellulose.
- Authors
González-Pérez, María M.; Lomelí-Ramírez, María G.; Robledo-Ortiz, Jorge R.; Silva-Guzmán, José A.; Manríquez-González, Ricardo
- Abstract
Biopolymers are biodegradable and renewable and can significantly reduce environmental impacts. For this reason, biocomposites based on a plasticized starch and cross-linker matrix and with a microfibrillated OCC cardboard cellulose reinforcement were developed. Biocomposites were prepared by suspension casting with varied amounts of microfibrillated cellulose: 0, 4, 8, and 12 wt%. Polyethylene glycol diglycidyl ether (PEGDE) was used as a cross-linking, water-soluble, and non-toxic agent. Microfibrillated cellulose (MFC) from OCC cardboard showed appropriate properties and potential for good performance as a reinforcement. In general, microfiber incorporation and matrix cross-linking increased crystallization, reduced water adsorption, and improved the physical and tensile properties of the plasticized starch. Biocomposites cross-linked with PEGDE and reinforced with 12 wt% MFC showed the best properties. The chemical and structural changes induced by the cross-linking of starch chains and MFC reinforcement were confirmed by FTIR, NMR, and XRD. Biodegradation higher than 80% was achieved for most biocomposites in 15 days of laboratory compost.
- Subjects
POLYETHYLENE glycol; CELLULOSE; POLYETHYLENE films; ETHERS; MICROFIBERS; BIOPOLYMERS; STARCH
- Publication
Polymers (20734360), 2024, Vol 16, Issue 9, p1290
- ISSN
2073-4360
- Publication type
Article
- DOI
10.3390/polym16091290