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Optical properties of cellulose nanofibre films at high temperatures |
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| Author: | Niskanen, Ilpo1; Zhang, Kaitao2; Karzarjeddi, Mohammad2; |
| Organizations: |
1Faculty of Technology, Structures and Construction Technology, University of Oulu, P.O. Box 7300, 90014, Oulu, Finland 2Faculty of Technology, Fibre and Particle Engineering, University of Oulu, P.O. Box 4300, 90014, Oulu, Finland 3Graduate School of Engineering, Utsunomiya University, 7-1-2 Yoto, Utsunomiya, Tochigi, 321-8585, Japan |
| Format: | article |
| Version: | published version |
| Access: | open |
| Online Access: | PDF Full Text (PDF, 2.3 MB) |
| Persistent link: | http://urn.fi/urn:nbn:fi-fe2022070150911 |
| Language: | English |
| Published: |
Springer Nature,
2022
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| Publish Date: | 2022-07-01 |
| Description: |
AbstractNanocelluloses and their different designs, such as films and nanopapers, have gained considerable interest in many application areas due to their unique properties. For many purposes, such as packaging and electronics, the thermal stability and optical properties of nanocellulose materials are crucial characteristics. In this study, the effects of heat treatment (100 ºC, 150 ºC and 200 ºC) on the optical and mechanical properties of 2,2,6,6-tetramethylpiperidinyl-1-oxy radical-oxidised cellulose nanofibre (TO-CNF) films were investigated, especially the alteration of the colour, complex refractive index and birefringence. Exposing TO-CNF films to high temperatures (> 150 ºC) induced permanent transformations in the CNF structure, leading to an increase in the refractive index, decreases in the birefringence and crystallinity index, colour darkening and significant deterioration of the mechanical properties. see all
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| Series: |
Journal of polymer research |
| ISSN: | 1022-9760 |
| ISSN-E: | 1572-8935 |
| ISSN-L: | 1022-9760 |
| Volume: | 28 |
| Issue: | 5 |
| Article number: | 187 |
| DOI: | 10.1007/s10965-022-03019-0 |
| OADOI: | https://oadoi.org/10.1007/s10965-022-03019-0 |
| Type of Publication: |
A1 Journal article – refereed |
| Field of Science: |
221 Nanotechnology |
| Subjects: | |
| Funding: |
We gratefully acknowledge funding from Academy of Finland ACNF projects (325276). Open Access funding provided by University of Oulu including Oulu University Hospital. |
| Academy of Finland Grant Number: |
325276 |
| Detailed Information: |
325276 (Academy of Finland Funding decision) |
| Copyright information: |
© The Author(s) 2022. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
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https://creativecommons.org/licenses/by/4.0/ |