Physico-chemical characterisation of chitosan/halloysite composite membranes

被引：101
作者：
De Silva, R. T. [1 ]
Pasbakhsh, Pooria [1 ]
Goh, K. L. [2 ]
Chai, Siang-Piao [3 ]
Ismail, H. [4 ]
机构：
[1] Monash Univ, Mech Engn Discipline, Sch Engn, Bandar Sunway 46150, Selangor Darul, Malaysia
[2] Newcastle Univ, Sch Mech & Syst Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
[3] Monash Univ, Chem Engn Discipline, Sch Engn, Bandar Sunway 46150, Selangor Darul, Malaysia
[4] Univ Sains Malaysia, Sch Mat & Mineral Resources Engn, Pulau Penang 11800, Malaysia
来源：
POLYMER TESTING | 2013年 / 32卷 / 02期
关键词：
Halloysite nanotubes; Chitosan biocomposite membranes; Microtensile testing; Scanning electron microscope; Thermal properties; MECHANICAL-PROPERTIES; HALLOYSITE NANOTUBES; CHITOSAN; NANOCOMPOSITES; MONTMORILLONITE;
D O I：
10.1016/j.polymertesting.2012.11.006
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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 physicochemical 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. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：265 / 271
页数：7
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