Atomic Layer Deposition of Metal Oxide on Nanocellulose for Enabling Microscopic Characterization of Polymer Nanocomposites
Article
Septevani, Athanasia A., Evans, David A. C., Hosseini, Alireza, Martin, Darren J., Simonsen, John, Conley Jr., John F. and Annamalai, Pratheep K.. 2018. "Atomic Layer Deposition of Metal Oxide on Nanocellulose for Enabling Microscopic Characterization of Polymer Nanocomposites." Small. 14 (46). https://doi.org/10.1002/smll.201803439
Article Title | Atomic Layer Deposition of Metal Oxide on Nanocellulose for Enabling Microscopic Characterization of Polymer Nanocomposites |
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ERA Journal ID | 3432 |
Article Category | Article |
Authors | Septevani, Athanasia A., Evans, David A. C., Hosseini, Alireza, Martin, Darren J., Simonsen, John, Conley Jr., John F. and Annamalai, Pratheep K. |
Journal Title | Small |
Journal Citation | 14 (46) |
Article Number | e1803439 |
Number of Pages | 6 |
Year | 2018 |
Publisher | John Wiley & Sons |
Place of Publication | Germany |
ISSN | 1613-6810 |
1613-6829 | |
Digital Object Identifier (DOI) | https://doi.org/10.1002/smll.201803439 |
Web Address (URL) | https://onlinelibrary.wiley.com/doi/10.1002/smll.201803439 |
Abstract | Analysis of cellulose nanocrystals (CNCs) at low volume fractions in polymer nanocomposites through conventional electron microscopy still remains a challenge due to insufficient contrast between CNCs and organic polymer matrices. Herein, a methodology for enhancing the contrast of CNC, through atomic layer deposition (ALD) of alumina (Al2O3) on CNCs is demonstrated. The metal oxide coated CNC allows clear visualization by transmission electron microscopy, when they are dispersed in water and polyol. A coating of about 6 ± 1 nm thick alumina layer on the CNC is achieved after 50 ALD cycles. This also enables the characterization of CNC dispersion/orientation (at 0.2 wt% loading) in an amorphous cellular system rigid polyurethane foam (RPUF), using backscattered electron microscopy with energy-dispersive X-ray spectroscopy. Microscopic analysis of the RPUF with alumina-coated CNC confirms that the predominant alignment of CNC occurs in a direction parallel to the foam rise. |
Keywords | aerogel |
ANZSRC Field of Research 2020 | 401602. Composite and hybrid materials |
401408. Manufacturing processes and technologies (excl. textiles) | |
401605. Functional materials | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Queensland |
Indonesian Institute of Sciences, Indonesia | |
Oregon State University, United States |
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https://research.usq.edu.au/item/z23yw/atomic-layer-deposition-of-metal-oxide-on-nanocellulose-for-enabling-microscopic-characterization-of-polymer-nanocomposites
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