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Physico-chemical characterisation of chitosan/halloysite composite membranes |
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| Authors: | R.T. De Silva Pooria Pasbakhsh K.L. Goh Siang-Piao Chai H. Ismail |
| Affiliation: | 1. Mechanical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 46150 Selangor Darul Ehsan, Malaysia;2. School of Mechanical and Systems Engineering, Newcastle University, NE1 7RU, United Kingdom;3. Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 46150 Selangor Darul Ehsan, Malaysia;4. School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia, 11800 Pulau Penang, Malaysia |
| Abstract: | Chitosan membranes reinforced by halloysite nanotubes (HNTs) at concentrations from 2 to 15 (w/w%) have been prepared by solution casting to investigate the optimal physico-chemical properties for biomedical applications. Tensile test data revealed that the membranes reinforced with 5 (w/w%) HNTs yielded the highest 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 HNTs 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. |
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