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Lookup NU author(s): Dr Kheng-Lim Goh
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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.
Author(s): De Silva RT, Pasbakhsh P, Goh KL, Chai SP, Ismail H
Publication type: Article
Publication status: Published
Journal: Polymer Testing
Print publication date: 01/04/2013
ISSN (print): 0142-9418
ISSN (electronic): 1873-2348
Publisher: Elsevier Ltd
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