Article history: This paper deals with the effect of solution properties and nanoparticle surface chemistry on the Received 1 February 2016 spinnability of a chitosan/polyethylene oxide (PEO) with high concentration (50 wt%) of chitin and cel- Received in revised form 2 April 2016 lulose nanocrystals and the properties of the resultant nanocomposite ﬁbers/ﬁber mats. Electrospinning Accepted 6 April 2016 dispersions with cellulose nanocrystals having sulphate surface groups showed poor spinnability com- Available online 7 April 2016 pared to chitin nanocrystals with amide and amino groups. Chitin nanocrystal based dispersions showed good spinnability and continuous ﬁber formation whereas cellulose nanocrystal system showed discon- Keywords: tinuous ﬁbers and branching. The viscosity and surface tension are shown to impact this behavior, but Chitosan conductivity did not. Poor spinnability observed for cellulose nanocrystal based ﬁbers was attributed Chitin nanocrystals to the coagulation of negatively charged cellulose nanocrystals and positively charged chitosan. The Cellulose nanocrystals study showed that the nanocrystal surface charge and interactions with the chitosan/PEO matrix have a Surface charge Electrospinning signiﬁcant impact on the spinnability of bionanocomposites. Nanocomposite ﬁbers © 2016 Elsevier Ltd. All rights reserved. 1. Introduction aging and ﬁltration (Chattopadhyay et al., 2016; Ramakrishna et al., 2005; Torres-Giner, Gimenez,
Carbohydrate Polymers – Elsevier
Published: Aug 20, 2016
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