Composite of Cellulose-Nanofiber-Reinforced Cellulose Acetate Butyrate: Improvement of Mechanical Strength by Cross-Linking of Hydroxyl Groups
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- Romain Milotskyi
- Institute of Science and Engineering, Kanazawa University, Kakuma machi, Kanazawa 920-1192, Japan
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- Ryo Serizawa
- Institute of Science and Engineering, Kanazawa University, Kakuma machi, Kanazawa 920-1192, Japan
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- Kaoru Yanagisawa
- Institute of Science and Engineering, Kanazawa University, Kakuma machi, Kanazawa 920-1192, Japan
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- Gyanendra Sharma
- Institute of Science and Engineering, Kanazawa University, Kakuma machi, Kanazawa 920-1192, Japan
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- Elisabeth Rada Desideria Ito
- Institute of Science and Engineering, Kanazawa University, Kakuma machi, Kanazawa 920-1192, Japan
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- Tetsuo Fujie
- Institute of Science and Engineering, Kanazawa University, Kakuma machi, Kanazawa 920-1192, Japan
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- Naoki Wada
- Institute of Science and Engineering, Kanazawa University, Kakuma machi, Kanazawa 920-1192, Japan
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- Kenji Takahashi
- Institute of Science and Engineering, Kanazawa University, Kakuma machi, Kanazawa 920-1192, Japan
Description
<jats:p>A great challenge hindering the use of cellulose nanofibers (CNF) as a reinforcing filler in bio-based polymeric matrices are their poor chemical compatibility. This is because of the inherent hydrophilic nature of CNF and the hydrophobic nature of the polymeric matrix. In this study, cellulose laminates were prepared by using CNF as a filler and cellulose acetate butyrate (CAB) as the polymer matrix. To improve the compatibility between CAB and CNF, the residual hydroxyl groups of CAB and the hydroxyl groups on the surface of CNF were cross-linked with bio-derived polyisocyanurate D376N (STABiO™). The composite material was obtained in one step by sandwiching a CNF sheet (10 wt%) coated with a cross-linking agent between CAB films (90 wt%) using hot pressing. When 14.3 wt% of the cross-linking agent to the total weight of CNF and CAB was added, the tensile strength and flexural strength were improved by 72.4% and 16.3%, respectively, compared with neat CAB. It was concluded that this increase in strength is a result of both: cross-linking between the CNF sheets as well as the cross-linking occurring at the CNF/CAB interface.</jats:p>
Journal
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- Journal of Composites Science
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Journal of Composites Science 7 (3), 130-, 2023-03-22
MDPI AG
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Details 詳細情報について
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- CRID
- 1360580230638049792
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- ISSN
- 2504477X
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- Data Source
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- Crossref
- KAKEN