Construction of polydopamine and carbon nanotube on carbon fiber surfaces to improve the mechanical properties of CF/PLA composite

被引：9

作者：

Zuo, Hongmei ^{[1
]}

Zou, Lihua ^{[1
]}

Jing, Wu ^{[1
]}

Wang, Hongjie ^{[1
]}

Wang, He ^{[1
]}

Wang, Xu ^{[1
]}

Yin, Hao ^{[1
]}

Ruan, Fangtao ^{[1
]}

Xu, Zhenzhen ^{[1
]}

Li, Diansen ^{[2
]}

机构：

[1] Anhui Polytech Univ, Sch Text & Garment, Wuhu 241000, Peoples R China

[2] Beihang Univ, Sch Chem, Beijing 100191, Peoples R China

来源：

MATERIALS LETTERS | 2024年 / 357卷

关键词：

Carbon materials; PLA; CNT; Polydopamine; Surfaces;

D O I：

10.1016/j.matlet.2023.135665

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polydopamine (PDA) and carbon nanotubes (CNT) were successively incorporated onto carbon fiber (CF) to enhance surface activity. The impact of PDA and CNT on wettability and mechanical properties of the resulting composites were revealed. Fiber reinforced polylactic acid (PLA) composites were prepared. The results indicated an improved wettability for PDA-CNT modified fibers. Simultaneously, the tensile and bending curves showed brittle and plastic fracture, respectively. Mechanical properties of CF-PDA-CNT/PLA composite significantly outperformed those of CF/PLA composite. The bridging effect of PDA on the CF surface allowed for a tight bond with the matrix PLA, and provided effective load transfer between the matrix and fibers. The application of PDA and CNT on surface modification provides a novel approach for the study of fiber modification.

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