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Electrospinnability of bionanocomposites with high nanocrystal loadings: The effect of nanocrystal surface characteristics
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK). LuleƄ University of Technology, Sweden.
Number of Authors: 3
2016 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 147, 464-472 p.Article in journal (Refereed) Published
Abstract [en]

This paper deals with the effect of solution properties and nanoparticle surface chemistry on the spinnability of a chitosan/polyethylene oxide (PEO) with high concentration (50 wt%) of chitin and cellulose nanocrystals and the properties of the resultant nanocomposite fibers/fiber mats. Electrospinning dispersions with cellulose nanocrystals having sulphate surface groups showed poor spinnability compared to chitin nanocrystals with amide and amino groups. Chitin nanocrystal based dispersions showed good spinnability and continuous fiber formation whereas cellulose nanocrystal system showed discontinuous fibers and branching. The viscosity and surface tension are shown to impact this behavior, but conductivity did not. Poor spinnability observed for cellulose nanocrystal based fibers was attributed to the coagulation of negatively charged cellulose nanocrystals and positively charged chitosan. The study showed that the nanocrystal surface charge and interactions with the chitosan/PEO matrix have a significant impact on the spinnability of bionanocomposites.

Place, publisher, year, edition, pages
2016. Vol. 147, 464-472 p.
Keyword [en]
Chitosan, Chitin nanocrystals, Cellulose nanocrystals, Surface charge, Electrospinning, Nanocomposite fibers
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:su:diva-132036DOI: 10.1016/j.carbpol.2016.04.018ISI: 000376449300053PubMedID: 27178953OAI: oai:DiVA.org:su-132036DiVA: diva2:949463
Available from: 2016-07-19 Created: 2016-07-06 Last updated: 2016-07-19Bibliographically approved

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Mathew, Aji P.
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