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TEMPO-oxidized nanocellulose films derived from coconut residues: Physicochemical, mechanical and electrical properties

The present work focuses on the development of cellulose nanofibrils (CNF) film that derived from sustainable biomass resources, which potentially to work as bio-based conductive membranes that assembled into supercapacitors. The chemically purified cellulose was isolated from different parts of coc...

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Main Authors: Hassan, S. H., Velayutham, Thamil Selvi, Chen, Y. W., Lee, Hwe Voon
Format: Article
Published: Elsevier 2021
Subjects:
QD Chemistry
QH301 Biology
Online Access:http://eprints.um.edu.my/26673/
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spelling my.um.eprints.266732022-04-08T01:08:42Z http://eprints.um.edu.my/26673/ TEMPO-oxidized nanocellulose films derived from coconut residues: Physicochemical, mechanical and electrical properties Hassan, S. H. Velayutham, Thamil Selvi Chen, Y. W. Lee, Hwe Voon QD Chemistry QH301 Biology The present work focuses on the development of cellulose nanofibrils (CNF) film that derived from sustainable biomass resources, which potentially to work as bio-based conductive membranes that assembled into supercapacitors. The chemically purified cellulose was isolated from different parts of coconut (coconut shell and its husk) and further subjected to 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated oxidation for CNF preparation. Physicochemical properties of prepared CNFs were studied in terms of chemical characteristics & crystallinity, surface functionalities, surface morphology, and thermal properties. Both coconut shell derived CNF and coconut husk-derived CNF fulfilled with nanocellulose's characteristics with fibres width ranged of 70-120 nm and 150-330 nm, respectively. CNF films were further prepared by solvent casting method to measure the modulus elasticity, piezoelectric and dielectric properties of the films. Mechanical study indicated that coconut shell-derived CNF film showed a higher value of elastic modulus than the coconut husk-derived CNF film, which was 8.39 GPa and 5.36 GPa, respectively. The effectiveness of electrical aspects for CNF films are well correlated with the crystallinity and thermal properties, associated with it's composition of different coconut's part. (c) 2021 Elsevier B.V. All rights reserved. Elsevier 2021-06-01 Article PeerReviewed Hassan, S. H. and Velayutham, Thamil Selvi and Chen, Y. W. and Lee, Hwe Voon (2021) TEMPO-oxidized nanocellulose films derived from coconut residues: Physicochemical, mechanical and electrical properties. International Journal of Biological Macromolecules, 180. pp. 392-402. ISSN 0141-8130, DOI https://doi.org/10.1016/j.ijbiomac.2021.03.066 <https://doi.org/10.1016/j.ijbiomac.2021.03.066>. 10.1016/j.ijbiomac.2021.03.066
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QD Chemistry
QH301 Biology
spellingShingle QD Chemistry
QH301 Biology
Hassan, S. H.
Velayutham, Thamil Selvi
Chen, Y. W.
Lee, Hwe Voon
TEMPO-oxidized nanocellulose films derived from coconut residues: Physicochemical, mechanical and electrical properties
description The present work focuses on the development of cellulose nanofibrils (CNF) film that derived from sustainable biomass resources, which potentially to work as bio-based conductive membranes that assembled into supercapacitors. The chemically purified cellulose was isolated from different parts of coconut (coconut shell and its husk) and further subjected to 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated oxidation for CNF preparation. Physicochemical properties of prepared CNFs were studied in terms of chemical characteristics & crystallinity, surface functionalities, surface morphology, and thermal properties. Both coconut shell derived CNF and coconut husk-derived CNF fulfilled with nanocellulose's characteristics with fibres width ranged of 70-120 nm and 150-330 nm, respectively. CNF films were further prepared by solvent casting method to measure the modulus elasticity, piezoelectric and dielectric properties of the films. Mechanical study indicated that coconut shell-derived CNF film showed a higher value of elastic modulus than the coconut husk-derived CNF film, which was 8.39 GPa and 5.36 GPa, respectively. The effectiveness of electrical aspects for CNF films are well correlated with the crystallinity and thermal properties, associated with it's composition of different coconut's part. (c) 2021 Elsevier B.V. All rights reserved.
format Article
author Hassan, S. H.
Velayutham, Thamil Selvi
Chen, Y. W.
Lee, Hwe Voon
author_facet Hassan, S. H.
Velayutham, Thamil Selvi
Chen, Y. W.
Lee, Hwe Voon
author_sort Hassan, S. H.
title TEMPO-oxidized nanocellulose films derived from coconut residues: Physicochemical, mechanical and electrical properties
title_short TEMPO-oxidized nanocellulose films derived from coconut residues: Physicochemical, mechanical and electrical properties
title_full TEMPO-oxidized nanocellulose films derived from coconut residues: Physicochemical, mechanical and electrical properties
title_fullStr TEMPO-oxidized nanocellulose films derived from coconut residues: Physicochemical, mechanical and electrical properties
title_full_unstemmed TEMPO-oxidized nanocellulose films derived from coconut residues: Physicochemical, mechanical and electrical properties
title_sort tempo-oxidized nanocellulose films derived from coconut residues: physicochemical, mechanical and electrical properties
publisher Elsevier
publishDate 2021
url http://eprints.um.edu.my/26673/
_version_ 1735409442990587904
score 13.211869

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