1. Chitosan/Corn Cob Biocomposite Films by Cross-linking with Glutaraldehyde.
- Author
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Chan Ming Yeng, Salmah Husseinsyah, and Sam Sung Ting
- Subjects
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GLUTARALDEHYDE , *BIOPOLYMERS , *CROSSLINKING (Polymerization) , *CORNCOBS , *CHITOSAN , *TENSILE strength , *MODULUS of elasticity , *IMINES - Abstract
Corn cob (CC) was used as a filler in chitosan (CS) biopolymer films. The effect of glutaraldehyde (GLA) as a crosslinking agent was studied in an effort to improve the properties of CS/CC biocomposite films prepared via solvent casting. The tensile strength and elongation at break values decreased, but the modulus of elasticity increased with CC content. However, the tensile properties of CS/CC biocomposite films improved when modified with GLA. The Fourier transform infrared (FTIR) results indicated the presence of imine bonds (C=N) and ethylenic groups due to the cross-linking reaction between CS and GLA. The thermal stability of CS/CC biocomposite films reduced with increasing CC content. The modification of CS/CC with GLA enhanced the thermal stability of the biocomposite films. Moreover, the wettability and adhesion of the CC-CS system were enhanced by modification with GLA, as demonstrated by a morphological study. The crosslinking agent glutaraldehyde positively affected the tensile strength, modulus of elasticity, and thermal stability of the biocomposite films. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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