Electrochemical grafting of poly(glycidyl methacrylate) on a carbon-fibre surface

Hu, Changtong; Ruan, Ru-yu; Wang, Wenshun; Gao, Aijun

doi:10.1039/d0ra00562b

Cited by 19 publications

(9 citation statements)

References 39 publications

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“…Reactive CE compatibilizers significantly improve the toughness and elongation at the break of the PLA-based blends, which was already confirmed by many studies [18,[29][30][31][32]. Interestingly, the addition of reactive compatibilizers also improves the fiber-matrix interface interactions for composites [33,34], especially for materials with the addition of the lignocellulosic fillers [35,36]. Our previous research on PLA/PBAT systems aimed to indicate the improvement of wettability of flax fibers with the addition of CE [37].…”

Section: Introductionsupporting

confidence: 53%

The Use of Agricultural Waste in the Modification of Poly(lactic acid)-Based Composites Intended for 3D Printing Applications. The Use of Toughened Blend Systems to Improve Mechanical Properties

et al. 2021

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The presented research focused on improving the mechanical properties of PLA-based composites reinforced with buckwheat husks (BH) particles. The research work was carried out in two stages. Firstly, the blend was prepared with the addition of polybutylene adipate terephthalate (PBAT) and thermoplastic starch (TPS), manufactured by injection molding technique, then the selected materials were prepared with the addition of BH filler, and the samples were prepared using the fused deposition modeling method (FDM). All samples were subjected to the assessment of material properties. Thermal and thermomechanical properties were evaluated using differential scanning calorimetry analysis (DSC) and dynamic thermal mechanical analysis (DMTA). Mechanical characteristic was evaluated using static tensile and flexural measurements and Charpy impact resistance tests. The research was supplemented with scanning electron microscopy analysis (SEM). It was found that the addition of PBAT and TPS greatly improves impact strength and elongation, especially with the addition of reactive compatibilizer. As expected, TPS, PBAT, and BH reduced the stiffness of the composites during DMTA testing. The presence of BH particles in the polymer matrix was observed to improve the crystallization behavior of PLA. The optimal content of BH filler in the composite was found to be 10%, which allowed to preserve good mechanical properties.

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Section: Introductionsupporting

confidence: 53%

The Use of Agricultural Waste in the Modification of Poly(lactic acid)-Based Composites Intended for 3D Printing Applications. The Use of Toughened Blend Systems to Improve Mechanical Properties

et al. 2021

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“…42 Second, polymer chains can be initiated from active sites on carbon fiber and grown in the presence of hardeners (Figure 7). 44 Hu et al 45 used click chemistry to graft GMA onto carbon fiber surface via electrochemical grafting. Once the chain-growth polymerization of methacrylates to generate p(GMA) is completed, a second polymerization step (i.e., step-growth polymerization) will be activated to form 3D cross-linked polymer matrix by enabling the formation of covalent bonds between the epoxide group of poly(GMA) chains and amine groups of hardeners.…”

Section: T H Imentioning

confidence: 99%

Atomistic Modeling of Dual-Cured Thermosets Based on Glycidyl Methacrylate and Hardeners with Various Architecture and Functionality

Demir

2021

ACS Appl. Polym. Mater.

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We report a versatile computational procedure for making and testing dual-cured thermosets based on a sequential chain-growth polymerization mechanism and step-growth polymerization mechanism, applicable to the generation of dual-cured thermosets with tunable macroscopic properties. The first stage involves a chain-growth polymerization of glycidyl methacrylate (GMA) monomers in the presence of hardeners, and the second stage is based on the step-growth polymerization of the epoxide bearing side chains of the polymerized GMA, p(GMA), with amine groups of the hardeners with various architecture and functionality, namely diethylenetriamine (DETA), isophoronediamine (IPDA), tris(2-aminoethyl)amine (TREN), and diethyltoluenediamine (DETDA). The mobility of the hardener in the once-cured samples determined the final density of the dual-cured samples. The faster the hardener is in the sample, the higher is the density of the dual-cured sample. Mechanical properties of the dual-cured samples showed a dependence on the architecture of hardener. The samples cured with linear aliphatic amines (DETA and TREN) obtained smaller Young's modulus values compared with the samples cured with cyclic (aliphatic or aromatic) amines (IPDA and DETDA).

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“…A high voltage or current needs to be set in the experiment to make the carbon fiber reach the required reaction conditions and the ideal grafting effect, which can easily destroy the surface structure of the carbon fiber. , Researchers in the field of galvanic corrosion found that the electrode potential of materials can be changed through the galvanic coupling effect when two different materials are used together. − Wielage indicated that when carbon fiber and aluminum were in contact in an electrolyte, the carbon fiber with a higher electrode potential became the cathode and polarized, decreasing the electrode potential of the carbon fiber. Hu applied the above principles to the electrochemical grafting of poly(glycidyl methacrylate) on the carbon fiber surface using aluminum and carbon fiber together as electrodes, finding that the grafting rate of the carbon fiber was improved. But there are many problems yet to be solved.…”

Section: Introductionmentioning

confidence: 99%

Electrode Potential Regulation of Carbon Fiber Based on Galvanic Coupling and Its Application in Electrochemical Grafting

Ruan

Wang

et al. 2021

ACS Appl. Mater. Interfaces

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The reaction behavior of carbon fiber in electrochemical grafting is related to its electrode potential. In this paper, carbon fiber and metals with different electrode potentials were used to form combined electrodes to regulate the electrode potential of carbon fiber. The results showed that galvanic coupling was formed in the combined anode when the potential difference between carbon fiber and the metal (Δϕ = ϕCF0 – ϕmetal) was higher than 0.05 V. The electrode potential of carbon fiber was reduced due to cathodic polarization. The electrode potential of carbon fiber after galvanic coupling was proportional to the self-corrosion potential of metals. By applying the electrode potential regulation of carbon fiber in the electrochemical grafting of poly(glycidyl methacrylate) onto the carbon fiber surface, the grafting effect was significantly improved with the decrease of the electrode potential of carbon fibers. The grafting amount of carbon fibers increased from 0.83 to 69.86% as the electrode potential of carbon fibers dropped from 0.55 to −0.72 V. Consequently, the interfacial shear strength of the carbon fiber composite was remarkably promoted from 47.59 to 81.41 MPa, increasing by 71.07%.

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Electrochemical grafting of poly(glycidyl methacrylate) on a carbon-fibre surface

Abstract: In this work, glycidyl methacrylate (GMA) was polymerised and grafted onto the surface of carbon fiber (CF) by using electrochemical grafting to improve the interfacial properties between the fibre and epoxy resin.

Cited by 19 publications

References 39 publications

The Use of Agricultural Waste in the Modification of Poly(lactic acid)-Based Composites Intended for 3D Printing Applications. The Use of Toughened Blend Systems to Improve Mechanical Properties

The Use of Agricultural Waste in the Modification of Poly(lactic acid)-Based Composites Intended for 3D Printing Applications. The Use of Toughened Blend Systems to Improve Mechanical Properties

Atomistic Modeling of Dual-Cured Thermosets Based on Glycidyl Methacrylate and Hardeners with Various Architecture and Functionality

Electrode Potential Regulation of Carbon Fiber Based on Galvanic Coupling and Its Application in Electrochemical Grafting

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