Preparation And Characterization Of Cross Linked Chitosan Filled Chitosan Composites
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Date
2012-06
Authors
Muhd Julkapli, Nurhidayatullaili
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
The interfacial bonds, homogeneity and rigidity of filler are the two main criteria that
significantly influenced the mechanical, thermal and hydrophilicity of the chitosan (Cs)
based bio-composites. Therefore, the aim of this study was to investigate the role of
cross linked chitosan (XCs) as filler in the Cs matrix towards the interfacial,
homogeneity and rigidity of the produced Cs bio-composites. XCs was synthesized
using three different cross linking agents named as 1,2,4,5-benzentetra carboxylic (BT),
4,4’-oxydiphtalic anhydride (ODA) and 3,3’,4,4’-diphthalic anhydride (DPA) which
consequently produced three different types of XCs filler; 1,2,4,5-benzentetra
carboxylic-chitosan (BTC), 4,4’-oxydiphtalic anhydride-chitosan (ODAC) and 3,3’,4,4’-
diphthalic anhydride-chitosan (DPAC). The formation amide structure (as the cross
linking bridge) was chemically, physically and thermally prove via the Fourier
Transform Infra-Red (FTIR), 1H and 12C Nuclear Magnetic Resonance (1H and
12CNMR), elemental analysis, Energy Dispersive X-ray Spectroscopy (EDXS), X-ray
diffraction (XRD), particle size analysis, density, Thermogravimetry (TG), Differential
Scanning Calorimetry (DSC), Field Emission Scanning Electron Microscope (FESEM),
solubility and swelling analysis. The solution casting technique was used to fabricate the
Cs/XCs bio-composites with the filler content of 0 to 12 wt/v %. The properties of the
produced bio-composites were analyzed on its mechanical (under tensile and tearing
testing), thermal (TG, DSC and Dynamic Mechanical (DM) analysis) and hyrophilicity
properties (under swollen medium of pH 2 to 12).
Description
Keywords
Preparation and characterization of cross linked , chitosan filled chitosan composites