Dopamine concentration-dependent surface modification for gaining carbon fiber composites with enhanced interfacial adhesion

Wu, Qing; Razzak, Abdur; Bai, Huanhuan; Deng, Hao; Ye, Ziyi; Zhu, Jianfeng

doi:10.1016/j.coco.2021.101047

Cited by 27 publications

(4 citation statements)

References 20 publications

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“…This phenomenon can be attributed to the formation of irregular polydopamine clusters on the carbon fiber surface. These findings jointly demonstrated the successful loading of dopamine onto carbon fibers, which resulted in notable changes in the surface morphology of the carbon fibers [ 27 ].…”

Section: Resultsmentioning

confidence: 86%

Preparation and Characterization of Dopamine-Modified Carbon Fiber Paper Composites for Gas Diffusion Layers

Chen

Sun

et al. 2023

Polymers

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Carbon fibers (CFs) cannot be directly used for the preparation of CF paper because of their chemically inert nature. Herein, the surface of CFs was modified using the spontaneous oxidative self-polymerization of dopamine. By taking full advantage of the spontaneous oxidation and self-polymerization properties of PD to maintain the maximum strength of CFs, a polydopamine-modified CF paper (PDA-CFP) with excellent performance was prepared using PD-modified CFs (PDA-CFs). This increased the proportion of hydrophilic functional groups on the surface of carbon fibers, increased the O/C ratio on the CF surface by 6 times, and improved the bond strength between the modified CF and the adhesive by making full use of the interaction force between polydopamine and PVA fibers. In this way, the primary properties of the CF paper were improved. Overall, the results showed that the dispersion of CF was considerably improved with dopamine modification. In addition, the primary physical properties of PDA-CFP were better than those of virgin CF paper (CFP-0). PDA-CFP exhibited a maximum tensile strength of 2.04 kN·m−1, a minimum resistivity of 0.06055 Ω·cm−1, and a minimum porosity of 72.4%. The tightness was increased by up to 12.1%.

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Section: Resultsmentioning

confidence: 86%

Preparation and Characterization of Dopamine-Modified Carbon Fiber Paper Composites for Gas Diffusion Layers

Chen

Sun

et al. 2023

Polymers

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“…Recently, many studies of improvement properties of composites by modification with PDA have been conducted. [24][25][26] Wu et al [27] proposed that the CF was modified by PDA, exhibiting the outstanding ability to heighten the interface strength of CF/EP composites. However, based on the PDA deposition time, the effects of PDA sizing modification on CF surface are rarely seen.…”

Section: Introductionmentioning

confidence: 99%

Carbon fiber‐reinforced epoxy composite properties improvement by incorporation of polydopamine sizing at fiber–matrix interface

et al. 2023

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To gain better interfacial and mechanical performances of carbon ber reinforced epoxy resin (CF/EP) composites, the surface modi cation of CF was carried out via a simple mild method. The polydopamine (PDA) was applied to size the CF, as well as the in uence of PDA sizing time on CF were elucidated. As the PDA deposited time increases, a growing number of PDA nanoparticles were adhered on CF surface, associating with appearance of PDA agglomerates. Through analyzing the results, the optimum PDA sized time was 24 h. The introduction of PDA increase the chemical reaction and mechanical interlocking between ber and matrix. Compared with unsized CF, the tensile strength of PDA 24 h sized CF was improved by 27.0%, the interlaminar shear strength, exural and impact strength of PDA 24 h sized CF/EP composites increased by 103.7%, 65.6% and 163.6%, respectively. Furthermore, the fracture topographies of CF/EP composite strikingly implied that the PDA has a positive impact on the mechanical performances of CF/EP composites.

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“…Many materials are used to construct interfacial layers to enhance the interfacial strength between carbon fibers and resin matrix and they are categorized into two groups, soft materials and rigid nanomaterials. Flexible polymers with reactive functional groups such as polydopamine (PDA) [22,23], polyether amine (PEA) [24,25], and poly(amido amine) (PAMAM) [26,27] are referred to as soft materials. Nanomaterials with higher rigidity such as graphene oxide (GO) [28][29][30], halloysite nanotubes (HNTs) [31], carbon nanotubes (CNTs) [32][33][34], and graphitic carbon nitride (C 3 N 4 ) [35] are called rigid nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Interfacial Shear Strength and Tensile Strength of Carbon Fibers through Chemical Grafting of Chitosan and Carbon Nanotubes

Xiao

et al. 2023

Polymers

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Multi-scale “rigid-soft” material coating has been an effective strategy for enhancing the interfacial shear strength (IFSS) of carbon fibers (CFs), which is one of the key themes in composite research. In this study, a soft material, chitosan (CS), and a rigid material, carbon nanotubes (CNTs), were sequentially grafted onto the CFs surface by a two-step amination reaction. The construction of the “rigid-soft” structure significantly increased the roughness and activity of the CFs surface, which improved the mechanical interlocking and chemical bonding between the CFs and resin. The interfacial shear strength (IFSS) of the CS- and CNT-modified CFs composites increased by 186.9% to 123.65 MPa compared to the desized fibers. In addition, the tensile strength of the modified CFs was also enhanced by 26.79% after coating with CS and CNTs. This strategy of establishing a “rigid-soft” gradient modulus interfacial layer with simple and non-destructive operation provides a valuable reference for obtaining high-performance CFs composites.

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Dopamine concentration-dependent surface modification for gaining carbon fiber composites with enhanced interfacial adhesion

Cited by 27 publications

References 20 publications

Preparation and Characterization of Dopamine-Modified Carbon Fiber Paper Composites for Gas Diffusion Layers

Preparation and Characterization of Dopamine-Modified Carbon Fiber Paper Composites for Gas Diffusion Layers

Carbon fiber‐reinforced epoxy composite properties improvement by incorporation of polydopamine sizing at fiber–matrix interface

Enhancing the Interfacial Shear Strength and Tensile Strength of Carbon Fibers through Chemical Grafting of Chitosan and Carbon Nanotubes

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