Effect of oxidation degrees of graphene oxide (GO) on the structure and physical properties of chitosan/GO composite films
Graphene oxide (GO) samples with different oxidation degrees were prepared using the modified and improved Hummers’ method by varying the ratios of graphite to potassium permanganate (KMnO4) at 1:2 (GO1), 1:4 (GO2), 1:6 (GO3), and 1:8 (GO4). Fourier-transform infrared spectroscopy (FTIR) and Raman s...
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| Format: | Article |
| Language: | English |
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Elsevier
2019
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| Online Access: | http://psasir.upm.edu.my/id/eprint/79527/ http://psasir.upm.edu.my/id/eprint/79527/1/Effect%20of%20oxidation%20degrees%20of%20graphene%20oxide%20.pdf |
| _version_ | 1848858701277954048 |
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| author | Foong, Han Lyn Tan, Chin Ping Mohd Zawawi, Ruzniza Zainal Abedin, Nur Hanani |
| author_facet | Foong, Han Lyn Tan, Chin Ping Mohd Zawawi, Ruzniza Zainal Abedin, Nur Hanani |
| author_sort | Foong, Han Lyn |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Graphene oxide (GO) samples with different oxidation degrees were prepared using the modified and improved Hummers’ method by varying the ratios of graphite to potassium permanganate (KMnO4) at 1:2 (GO1), 1:4 (GO2), 1:6 (GO3), and 1:8 (GO4). Fourier-transform infrared spectroscopy (FTIR) and Raman spectroscopy confirmed the increase in oxygen-containing groups in GO with the increase in KMnO4 concentration. Composite films comprising chitosan (CS) and GO were synthesized using the solution casting method and were characterized by mechanical tests, scanning electron microscopy (SEM), FTIR spectroscopy, and contact angle analysis. GO4 yielded a significant (p < 0.05) improvement in mechanical strength and lower UV light transmission without significantly (p ≥ 0.05) increasing the water vapor permeability (WVP), compared to a neat CS film. Films with GO4 also had denser structure and all films were completely degradable within 20 days in soil compost. This study presents the effect of GO oxidation degrees on the properties of CS/GO composite films as potential materials for food packaging. |
| first_indexed | 2025-11-15T12:17:38Z |
| format | Article |
| id | upm-79527 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T12:17:38Z |
| publishDate | 2019 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-795272021-05-31T09:09:41Z http://psasir.upm.edu.my/id/eprint/79527/ Effect of oxidation degrees of graphene oxide (GO) on the structure and physical properties of chitosan/GO composite films Foong, Han Lyn Tan, Chin Ping Mohd Zawawi, Ruzniza Zainal Abedin, Nur Hanani Graphene oxide (GO) samples with different oxidation degrees were prepared using the modified and improved Hummers’ method by varying the ratios of graphite to potassium permanganate (KMnO4) at 1:2 (GO1), 1:4 (GO2), 1:6 (GO3), and 1:8 (GO4). Fourier-transform infrared spectroscopy (FTIR) and Raman spectroscopy confirmed the increase in oxygen-containing groups in GO with the increase in KMnO4 concentration. Composite films comprising chitosan (CS) and GO were synthesized using the solution casting method and were characterized by mechanical tests, scanning electron microscopy (SEM), FTIR spectroscopy, and contact angle analysis. GO4 yielded a significant (p < 0.05) improvement in mechanical strength and lower UV light transmission without significantly (p ≥ 0.05) increasing the water vapor permeability (WVP), compared to a neat CS film. Films with GO4 also had denser structure and all films were completely degradable within 20 days in soil compost. This study presents the effect of GO oxidation degrees on the properties of CS/GO composite films as potential materials for food packaging. Elsevier 2019-09 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/79527/1/Effect%20of%20oxidation%20degrees%20of%20graphene%20oxide%20.pdf Foong, Han Lyn and Tan, Chin Ping and Mohd Zawawi, Ruzniza and Zainal Abedin, Nur Hanani (2019) Effect of oxidation degrees of graphene oxide (GO) on the structure and physical properties of chitosan/GO composite films. Food Packaging and Shelf Life, 21. ISSN 2214-2894 https://www.sciencedirect.com/science/article/abs/pii/S2214289418303697 10.1016/j.fpsl.2019.100373 |
| spellingShingle | Foong, Han Lyn Tan, Chin Ping Mohd Zawawi, Ruzniza Zainal Abedin, Nur Hanani Effect of oxidation degrees of graphene oxide (GO) on the structure and physical properties of chitosan/GO composite films |
| title | Effect of oxidation degrees of graphene oxide (GO) on the structure and physical properties of chitosan/GO composite films |
| title_full | Effect of oxidation degrees of graphene oxide (GO) on the structure and physical properties of chitosan/GO composite films |
| title_fullStr | Effect of oxidation degrees of graphene oxide (GO) on the structure and physical properties of chitosan/GO composite films |
| title_full_unstemmed | Effect of oxidation degrees of graphene oxide (GO) on the structure and physical properties of chitosan/GO composite films |
| title_short | Effect of oxidation degrees of graphene oxide (GO) on the structure and physical properties of chitosan/GO composite films |
| title_sort | effect of oxidation degrees of graphene oxide (go) on the structure and physical properties of chitosan/go composite films |
| url | http://psasir.upm.edu.my/id/eprint/79527/ http://psasir.upm.edu.my/id/eprint/79527/ http://psasir.upm.edu.my/id/eprint/79527/ http://psasir.upm.edu.my/id/eprint/79527/1/Effect%20of%20oxidation%20degrees%20of%20graphene%20oxide%20.pdf |