Amino graphene oxide/dopamine modified aramid fibers: Preparation, epoxy nanocomposites and property analysis

Dopamine modified aramid fiber (AF) surface was grafted with amino functionalized graphene oxide to improve the interfacial adhesive performance. The self-polymerized polydopamine (PDA) coating and subsequent amino GO grafting on the AF surface attributed to the increase in its surface roughness and...

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Bibliographic Details
Published in:Polymer (Guilford) Vol. 168; pp. 131 - 137
Main Authors: Gong, Xianyun, Liu, Yuyan, Wang, Youshan, Xie, Zhimin, Dong, Qingliang, Dong, Mengyao, Liu, Hu, Shao, Qian, Lu, Na, Murugadoss, Vignesh, Ding, Tao, Guo, Zhanhu
Format: Journal Article
Language:English
Published: Kidlington Elsevier Ltd 02.04.2019
Elsevier BV
Subjects:
Amino graphene oxide
Aramid fiber reinforced plastics
Chemical composition
Dopamine
Epoxy matrix composites
Ethylenediamine
Fibers
Fourier transforms
Functional groups
Grafting
Graphene
Interface properties
Interfacial properties
Interfacial shear strength
Nanocomposites
Organic chemistry
Photoelectron spectroscopy
Photoelectrons
Polydopamine
Polymer matrix composites
Scanning electron microscopy
Shear strength
Spectroscopy
Spectrum analysis
Surface roughness
X ray photoelectron spectroscopy
Amino graphene oxide
Polydopamine
Interface properties
ISSN:0032-3861, 1873-2291
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Summary:Dopamine modified aramid fiber (AF) surface was grafted with amino functionalized graphene oxide to improve the interfacial adhesive performance. The self-polymerized polydopamine (PDA) coating and subsequent amino GO grafting on the AF surface attributed to the increase in its surface roughness and surface-active groups. The functional groups, chemical composition and surface topography of unmodified and modified AF was investigated by Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS) and Scanning electron microscopy (SEM). The interfacial properties were analyzed by measuring interfacial shear strength (IFSS) of unmodified and modified AF embedded epoxy matrix. Further, the properties were tuned by optimizing the reaction temperature and concentration of ethylenediamine. The IFSS of AF/epoxy composites was increased by 34% after grafting amino graphene oxide. •The self-polymerized polydopamine) (PDA) layer was deposited on aramid fibers.•An efficient route to functionalize aramid fibers based on dopamine chemistry was developed.•With PDA coating and further amino GO grafting, the rougher fiber surface significantly improved the IFSS.
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ISSN:0032-3861
1873-2291
DOI:10.1016/j.polymer.2019.02.021