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Physico-chemical characterisation of chitosan/halloysite composite membranes

Lookup NU author(s): Dr Kheng-Lim Goh

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Abstract

Chitosan membranes reinforced by halloysite nanotubes (HNTs) at concentrations from 2 to 15 (w/w %) have been prepared by solution casting method to investigate the optimal physico-chemical properties for biomedical applications. Tensile test data revealed that the membranes reinforced by 5 (w/w %) HNT concentration yielded the highest (mean ± stardard error) Young’s modulus (0.52 ± 0.01 GPa) and strength (81.6 ± 4.4 MPa). Electron micrographs of the fractured surfaces implicated the interplay between individual HNTs and agglomerates of HNT in the stress transfer mechanism. Infrared spectra revealed interaction between the HNT siloxane and chitosan functional groups. Thermogravimetric results demonstrated that the thermal stability of the membranes increased with HNT concentration.


Publication metadata

Author(s): De Silva RT, Pasbakhsh P, Goh KL, Chai SP, Ismail H

Publication type: Article

Publication status: Published

Journal: Polymer Testing

Year: 2013

Volume: 32

Issue: 2

Pages: 265-271

Print publication date: 01/04/2013

ISSN (print): 0142-9418

ISSN (electronic): 1873-2348

Publisher: Elsevier Ltd

URL: http://dx.doi.org/10.1016/j.polymertesting.2012.11.006

DOI: 10.1016/j.polymertesting.2012.11.006


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