The Reinforcing Effect of O‐ <scp> C <sub>3</sub> N <sub>4</sub> </scp> on the Interfacial Bonding and Mechanical Properties of Ramie Fiber/Epoxy Composites
ABSTRACT Oxidized carbon nitride (O‐C 3 N 4 ) nanosheets, synthesized via Hummers' method oxidation of carbon nitride (C 3 N 4 ), offer advantages including low cost, simple production, and good dispersibility over conventional nanofillers such as carbon nanotubes etc. The O‐C 3 N 4 nanosheets significantly improved interfacial interactions within the ramie fiber/epoxy (O‐C 3 N 4 /RF/EP) composite. At an optimal O‐C 3 N 4 loading of 0.3 phr, the composite exhibited remarkable enhancements: interlaminar shear strength (ILSS), tensile strength, flexural strength, impact strength, and storage modulus increased by 11.3%, 15.4%, 9.0%, 7.6%, and 19.9%, respectively. Furthermore, the glass transition temperature ( T g ) of the composite was elevated by 7.3°C compared to the baseline RF/EP (79.44°C). The effective interfacial modification achieved through O‐C 3 N 4 incorporation establishes these nanosheets as a promising strategy for engineering high‐performance natural fiber composites.
Authors
- Jipeng Guan (ORCID: https://orcid.org/0000-0001-9333-0284)
- Lichao Yu (ORCID: https://orcid.org/0000-0001-9159-9001)
- Sheng Guo Wen
- Weiwei Yang
- Y. Liu
- Xiaojun Shen (ORCID: https://orcid.org/0000-0003-1951-0927)
- Rui‐Qiong Dang
- Song‐Qing Zhu (ORCID: https://orcid.org/0009-0005-4414-3286)
Institutions
- Jianghan University (CN)
- Jiaxing University (CN)
Publication Details
- Journal
- Polymer Composites
- Published
- 2025-10-28
- DOI
- https://doi.org/10.1002/pc.70602
- Primary Topic
- Fiber-reinforced polymer composites
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Zhejiang Province