NDLI: Biodegradable Nanocomposite Films Based on Sodium Alginate and Cellulose Nanofibrils

Content Provider	MDPI
Author	Deepa, B. Abraham, Eldho Pothan, Laly Cordeiro, Nereida Faria, Marisa Thomas, Sabu
Abstract	Biodegradable nanocomposite films were prepared by incorporation of cellulose nanofibrils (CNF) into alginate biopolymer using the solution casting method. The effects of CNF content (2.5, 5, 7.5, 10 and 15 wt %) on mechanical, biodegradability and swelling behavior of the nanocomposite films were determined. The results showed that the tensile modulus value of the nanocomposite films increased from 308 to 1403 MPa with increasing CNF content from 0% to 10%; however, it decreased with further increase of the filler content. Incorporation of CNF also significantly reduced the swelling percentage and water solubility of alginate-based films, with the lower values found for 10 wt % in CNF. Biodegradation studies of the films in soil confirmed that the biodegradation time of alginate/CNF films greatly depends on the CNF content. The results evidence that the stronger intermolecular interaction and molecular compatibility between alginate and CNF components was at 10 wt % in CNF alginate films.
File Size	3686400
File Format	PDF
e-ISSN	19961944
DOI	10.3390/ma9010050
Journal	Materials
Issue Number	1
Volume Number	9
Language	English
Publisher Date	2016-01-14
Access Restriction	Open
Subject Keyword	cellulose nanofibrils sodium alginate nanocomposite films solvent casting mechanical properties
Content Type	Text
Resource Type	Article

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Biodegradable Nanocomposite Films Based on Sodium Alginate and Cellulose Nanofibrils