Effect of sonication time and heat treatment on the structural and physical properties of chitosan/graphene oxide nanocomposite films
This study determined the effect of ultrasonication time (30, 60, and 120 min) and heat treatment (30, 60, and 120 °C) on the structure and properties of the chitosan/ graphene oxide (CSGO) composite films. Graphene oxide (GO) nanosheets with thickness of ∼1 nm was obtained after 120 min of sonicati...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2021
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| Online Access: | http://psasir.upm.edu.my/id/eprint/96942/1/ABSTRACT.pdf http://psasir.upm.edu.my/id/eprint/96942/ https://www.sciencedirect.com/science/article/pii/S2214289421000314 |
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| Summary: | This study determined the effect of ultrasonication time (30, 60, and 120 min) and heat treatment (30, 60, and 120 °C) on the structure and properties of the chitosan/ graphene oxide (CSGO) composite films. Graphene oxide (GO) nanosheets with thickness of ∼1 nm was obtained after 120 min of sonication, as observed using atomic force microscopy (AFM). The incorporation of highly sonicated GO significantly (p < 0.05) improved both visible and ultraviolet (UV) light barrier properties of chitosan (CS) films. The heating temperature of 120 °C improved the hydrophobicity of the CSGO composite films, as demonstrated by contact angle analysis. Finally, all films were completely degradable within 28 days in a soil compost. The CSGO composites are potential green alternatives to petrochemical-based food packaging materials. |
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