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Self-bonded composite films based on cellulose nanofibers and chitin nanocrystals as antifungal materials
KTH, School of Biotechnology (BIO), Glycoscience.ORCID iD: 0000-0002-1295-5010
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2016 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 144, 41-49 p.Article in journal (Refereed) PublishedText
Abstract [en]

Cellulose nanofibers and chitin nanocrystals, two main components of agricultural and aquacultural by-products, were obtained from blue agave and yellow squat lobster industrial residues. Cellulose nanofibers were obtained using high pressure homogenization, while chitin nanocrystals were obtained by hydrolysis in acid medium. Cellulose nanofibers and chitin nanocrystals were characterized by X-ray diffraction, Atomic Force Microscopy and Infrared spectroscopy. Self-bonded composite films with different composition were fabricated by hot pressing and their properties were evaluated. Antifungal activity of chitin nanocrystals was studied using a Cellometer®cell count device, mechanical properties at tension were measured with a universal testing machine, water vapor permeability was evaluated with a thermohygrometer and surface tension with sessile drop contact angle method. The addition of chitin nanocrystals reduced slightly the mechanical properties of the composite. Presence of chitin nanocrystals influenced the growth of Aspergillus sp fungus in the surface of the composites as expected.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 144, 41-49 p.
Keyword [en]
Antifungal properties, Blue agave, Cellulose, Chitin, Nanocrystals, Yellow squat lobster, Agricultural machinery, Atomic force microscopy, Cellulose films, Composite films, Films, Fungi, Hot pressing, Infrared spectroscopy, Mechanical permeability, Mechanical properties, Nanofibers, Shellfish, X ray diffraction, Anti-fungal properties, Cellulose nanofibers, Contact angle method, High pressure homogenization, Universal testing machines, Water vapor permeability, Nanocomposite films, Cellulose Derivatives, Contact Angle, Homogenization, Hydrolysis, Surface Tension, Thin Films
National Category
Polymer Chemistry Polymer Technologies
URN: urn:nbn:se:kth:diva-186927DOI: 10.1016/j.carbpol.2016.02.024ISI: 000373830700006ScopusID: 2-s2.0-84961653872OAI: diva2:930502

QC 20160524

Available from: 2016-05-24 Created: 2016-05-16 Last updated: 2016-05-24Bibliographically approved

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Fernandes, Susana C. M.
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