Surface-conductive UHMWPE fibres via in situ reduction and deposition of graphene oxide

Wang, Kui; Liu, Mingqiao; Song, Changyuan; Shen, Lu; Chen, Peng; Xu, Shian

doi:10.1016/j.matdes.2018.03.069

Cited by 34 publications

(10 citation statements)

References 34 publications

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“…The polymerization of ethylene is actually supported by the presence of a catalyst on the graphene surface, and as reported, PE is covalently bonded to graphene [ 31 ]. In this case, it is assumed that the presence of covalent bonds formed between graphene and UHMWPE could slow down the thermal degradation, as stated in [ 39 ]. Moreover, the residual yields of UHMWPE/graphene nanocomposites showed a high increase due to the production of some thermally stable products as the final product of nanocomposite pyrolysis that can withstand temperatures above 700 °C [ 40 , 41 ].…”

Section: Resultsmentioning

confidence: 99%

Thermal Degradation Kinetics and Modeling Study of Ultra High Molecular Weight Polyethylene (UHMWP)/Graphene Nanocomposite

et al. 2021

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The incorporation of nanofillers such as graphene into polymers has shown significant improvements in mechanical characteristics, thermal stability, and conductivity of resulting polymeric nanocomposites. To this aim, the influence of incorporation of graphene nanosheets into ultra-high molecular weight polyethylene (UHMWPE) on the thermal behavior and degradation kinetics of UHMWPE/graphene nanocomposites was investigated. Scanning electron microscopy (SEM) analysis revealed that graphene nanosheets were uniformly spread throughout the UHMWPE’s molecular chains. X-Ray Diffraction (XRD) data posited that the morphology of dispersed graphene sheets in UHMWPE was exfoliated. Non-isothermal differential scanning calorimetry (DSC) studies identified a more pronounced increase in melting temperatures and latent heat of fusions in nanocomposites compared to UHMWPE at lower concentrations of graphene. Thermogravimetric analysis (TGA) and derivative thermogravimetric (DTG) revealed that UHMWPE’s thermal stability has been improved via incorporating graphene nanosheets. Further, degradation kinetics of neat polymer and nanocomposites have been modeled using equations such as Friedman, Ozawa–Flynn–Wall (OFW), Kissinger, and Augis and Bennett’s. The "Model-Fitting Method” showed that the auto-catalytic nth-order mechanism provided a highly consistent and appropriate fit to describe the degradation mechanism of UHMWPE and its graphene nanocomposites. In addition, the calculated activation energy (Ea) of thermal degradation was enhanced by an increase in graphene concentration up to 2.1 wt.%, followed by a decrease in higher graphene content.

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Section: Resultsmentioning

confidence: 99%

Thermal Degradation Kinetics and Modeling Study of Ultra High Molecular Weight Polyethylene (UHMWP)/Graphene Nanocomposite

et al. 2021

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“…Functional groups can not only promote the chemical bonding between fiber and RPU matrix, but also disperse the diffusion pathway of cracks and enhance the toughness of materials. Wang et al [41] deposited reduced graphene (rGO) on the surface of PDA coating to its resistance value, thus improving the conductivity of UHMWPE fiber surface.…”

Section: Coatingmentioning

confidence: 99%

Research progress on surface modification and application status of UHMWPE fiber

Wang

Hou

2022

J. Phys.: Conf. Ser.

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Ultrahigh molecular weight polyethylene (UHMWPE) fiber is a high-performance material with superior properties of high strength and modulus, low density, wear resistance and corrosion resistance. But the development of UHMWPE fiber reinforced polymers is hindered due to its inert inactive surface and poor interfacial adhesion with polymer matrix. This work presents the research progress on surface modification techniques, including ‘dry’ treatment, strong oxidant treatment, chemical grafting and coating, of UHMWPE fiber and the mechanisms of the improvement on surface properties and interfacial adhesion strength between the UHMWPE fiber and the polymer matrix. Application status of UHMWPE fiber such as aerospace, ocean engineering and individual protection is introduced.

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“…The functional groups of different UHMWPE fibers are characterized by ATR-FTIR as shown in Figure 2. Observing the three curves, they all present four obvious absorption peaks at 2916, 2848, 1472, and 717 cm À1 , which should belong to the methylene non-symmetric stretch vibration, the methylene symmetric stretch vibration, the methylene non-symmetric angle vibration and the methylene swing in plane vibration, 43 respectively. For UHMWPE-PDA fiber (b), the broad absorption peak is appeared at 3200-3600 cm À1 , which is attributed to the assigned asymmetric stretching vibrations of aromatic -OH and -NH.…”

Section: Surface Chemical Composition Analysismentioning

confidence: 99%

High‐performance fiber‐reinforced composites with a polydopamine/epoxy silane hydrolysis‐condensate bilayer on surface of ultra‐high molecular weight polyethylene fiber

Zhang

Cao

Zhou

et al. 2021

J of Applied Polymer Sci

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A bilayer structure with polydopamine (PDA) transition layer and 3-glycidyl ether oxy-propyl trimethoxy silane (GOPTS) hydrolysiscondensate strengthened layer on the surface of ultra-high molecular weight polyethylene (UHMWPE) fiber is prepared to improve the damage resistance of composites and more efficient stress transmission in composites. PDA is covered on the surface of UHMWPE fiber and then GOPTS is hydrolyzed and condensed to form inorganic -O-Si-O-with epoxy groups on the PDA layer. In addition, the surface activated nano-SiO 2 is dispersed in the epoxy resin to increase the strength of the matrix resin. The results show that the interfacial shear strength (IFSS), the impact strength, the flexural strength and flexural modulus of UHMWPE-PDA-GOPTS/EP-SiO 2 increase by 99.1%, 54.1%, 76.8%, and 36.6% respectively compared with unmodified UHMWPE/EP. The chemical compositions of the treated fiber surface are characterized by X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy (ATR-FTIR). With the help of the scanning electron microscopy, the interface failure and reinforcement mechanism of the composites are further explored due to UHMWPE fiber shear yield deformation, UHMWPE fiber fracture, matrix resin cracking and the relative sliding friction between the fiber and matrix.

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Surface-conductive UHMWPE fibres via in situ reduction and deposition of graphene oxide

Cited by 34 publications

References 34 publications

Thermal Degradation Kinetics and Modeling Study of Ultra High Molecular Weight Polyethylene (UHMWP)/Graphene Nanocomposite

Thermal Degradation Kinetics and Modeling Study of Ultra High Molecular Weight Polyethylene (UHMWP)/Graphene Nanocomposite

Research progress on surface modification and application status of UHMWPE fiber

High‐performance fiber‐reinforced composites with a polydopamine/epoxy silane hydrolysis‐condensate bilayer on surface of ultra‐high molecular weight polyethylene fiber

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