Improvement of mechanical and thermal properties of epoxy composites with citric acid modified and defibrated cellulose filler

Yano, Shotaro; Hsu, Yu I.; Uyama, Hiroshi

Polymer Degradation and Stability, 2025, 240, 111482

アクセス数:37件（2025-10-18 05:25 集計）

固定URL: https://hdl.handle.net/11094/102615

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論文情報

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タイトル
Improvement of mechanical and thermal properties of epoxy composites with citric acid modified and defibrated cellulose filler
著者
著者名
Yano, Shotaro
NRID
1000010757678 1000010757678
ORCID
0000-0002-4533-7200 0000-0002-4533-7200
researchmap permalink
yuihsu yuihsu
Scopus Author ID
55389981500 55389981500
著者名
Hsu, Yu I.
NRID
1000070203594 1000070203594
ORCID
0000-0002-8587-2507 0000-0002-8587-2507
researchmap permalink
read0168389 read0168389
Scopus Author ID
7102108908 7102108908
著者名
Uyama, Hiroshi
キーワード等
Cellulose
Citric acid modification
Composite
Defibration
Epoxy resin
内容
Yano S., Hsu Y.I., Uyama H.. Improvement of mechanical and thermal properties of epoxy composites with citric acid modified and defibrated cellulose filler. Polymer Degradation and Stability 240, 111482 (2025); https://doi.org/10.1016/j.polymdegradstab.2025.111482.
抄録
Cellulose is a biomass filler with low environmental impact; however, its application presents challenges such as poor affinity between hydrophobic plastics and hydrophilic cellulose and the aggregation of cellulose. In this study, citric acid-modified cellulose (CAC) was used as an environment-friendly filler for enhancing the mechanical properties of epoxy composites. CAC was prepared via the esterification of cellulose with citric acid. In addition, a defibrated CAC (F-CAC) with a fiber diameter of ∼140 nm was produced using a grinder. The addition of F-CAC doubled Young's modulus increased it from 1.07 GPa to 2.08 GPa, and raised the glass transition temperature by 1.8 °C. The microscopic observations of composites revealed that CAC demonstrated a greater affinity for matrix than that of unmodified cellulose, whereas F-CAC exhibited enhanced dispersibility within the composites. Carboxyl groups introduced during the citric acid-modification may have contributed to the interaction between the filler and epoxy network. The incorporation of CAC or F-CAC as fillers improved the mechanical and thermal properties of epoxy composites. This research expands the range of applications for CAC, an environmentally friendly filler. It is anticipated that CAC will facilitate the development of high-strength, low-environmental-impact epoxy.
出版者
Elsevier Ltd
収録物名
Polymer Degradation and Stability
巻(号)
240
ページ
111482
刊行年月
2025-06-19
言語
英語
ハンドルURL
https://hdl.handle.net/11094/102615
PISSN
01413910
関連情報 (isIdenticalTo)
DOI (出版社版)
https://doi.org/10.1016/j.polymdegradstab.2025.111482
アクセス権
open access
権利情報
© 2025. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
出版タイプ
Version of Record
カテゴリ
学術雑誌論文 Journal Article