Graphene Oxide Epoxy (GO‐xy): GO as Epoxy Adhesive by Interfacial Reaction of Functionalities

Vinod, Soumya; Tiwary, Chandra Sekhar; Samanta, Atanu; Özden, Şehmus; Narayanan, Tharangattu N.; Vajtai, Róbert; Agarwal, Vipin; Singh, Abhishek K.; John, George; Ajayan, Pulickel M.

doi:10.1002/admi.201700657

Cited by 19 publications

(13 citation statements)

References 43 publications

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“…There are epoxy groups between graphite sheets after oxidation process. 33 The obtained GO (0.2 g) was uniformly dispersed in the anhydrous ethanol (200 ml) after ultrasonic process for 2 h. Then, hexadecylamine (0.4 g) was added into GO suspension and then stirred for 6 h at 70 C. After completing such a reaction, the product was washed by anhydrous ethanol repeatedly and then dried at 60 C. The modified GO was denoted as m-GO. The mechanism for surface modification of GO was depicted in Figure 1.…”

Section: The Surface Modification Of Gomentioning

confidence: 99%

“…According to improved Hummer's method, 32 the GO was prepared and fully washed with deionized water until neutral. There are epoxy groups between graphite sheets after oxidation process 33 . The obtained GO (0.2 g) was uniformly dispersed in the anhydrous ethanol (200 ml) after ultrasonic process for 2 h. Then, hexadecylamine (0.4 g) was added into GO suspension and then stirred for 6 h at 70°C.…”

Section: Experimental Sectionsmentioning

confidence: 99%

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Enhanced wear resistance of ultra‐high molecular weight polyethylene fibers by modified‐graphite oxide

Wang

Quan

et al. 2021

J of Applied Polymer Sci

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A simple and feasible method to enhance the wear resistance of ultra-high molecular weight polyethylene (UHMWPE) fibers was reported. The graphite oxide (GO) prepared using improved Hummer's method was surface modified with hexadecylamine to improve its compatibility with UHMWPE. Combined with well-dispersion of modified-GO (m-GO) in dichloromethane and the fact that the viscosity of UHMWPE suspension can be decreased by dichloromethane, the well dispersed m-GO/dichloromethane was added into UHMWPE suspension to improve m-GO dispersion in UHMWPE fibers. Finally, UHMWPE fibers with different m-GO concentration were prepared using gel spinning technology. The effect of m-GO concentration on the structure and properties of modified UHMWPE fibers were investigated. The results indicated that the melting temperature and crystallinity of m-GO modified UHMWPE fibers increased with increasing of m-GO concentration, while the fiber's crystal sizes and orientation increased, thus the tensile strength of m-GO modified UHMWPE fibers remained almost undamaged. The introduction of m-GO is beneficial to the formation of smooth transfer film on fiber's surface, which enhanced the self-lubrication of UHMWPE fibers. Compared with pure UHMWPE fiber, the UHMWPE fiber containing 1.5 wt% m-GO had enhanced wear resistance by 55.4% and still maintained high tensile strength of 29.98 cN dtex −1 .

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Section: The Surface Modification Of Gomentioning

confidence: 99%

Section: Experimental Sectionsmentioning

confidence: 99%

Enhanced wear resistance of ultra‐high molecular weight polyethylene fibers by modified‐graphite oxide

Wang

Quan

et al. 2021

J of Applied Polymer Sci

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“…The modification of the surface of the nanomaterials by a large number of active groups is capable of improving the compatibility between nanomaterials and epoxy adhesives. The nanomaterial can be effectively dispersed in epoxy adhesives, which is conducive to improving the mechanical properties of the composite [ 37 , 38 , 39 , 40 , 41 ]. In most of the existing research on epoxy adhesive toughening, the focus is placed on adjusting the mix ratio of nanomaterials and functionalizing coupling agents to improve the mechanical properties of epoxy adhesives [ 42 , 43 , 44 , 45 ].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Mechanical and Bond Properties of Epoxy Adhesives Modified by SiO2 Nanoparticles with Active Groups

Long

2022

Polymers

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In order to improve the mechanical and bond properties of epoxy adhesives for their wide scope of applications, modified epoxy adhesives were produced in this study with SiO2 nanoparticles of 20 nm in size, including inactive groups, NH2 active groups, and C4H8 active groups. The mechanical properties of specimens were examined, and an investigation was conducted into the effects of epoxy adhesive modified by three kinds of SiO2 nanoparticles on the bond properties of carbon fiber reinforced polymer and steel (CFRP/steel) double lap joints. According to scanning electron microscopy (SEM), the distribution effect in epoxy adhesive of SiO2 nanoparticles modified by active groups was better than that of inactive groups. When the mass fraction of SiO2-C4H8 nanoparticles was 0.05%, the tensile strength, tensile modulus, elongation at break, bending strength, flexural modulus, and impact strength of the epoxy adhesives reached their maximum, which were 47.63%, 44.81%, 57.31%, 62.17%, 33.72%, 78.89%, and 68.86% higher than that of the EP, respectively, and 8.45%, 9.52%, 9.24%, 20.22%, 17.76%, 20.18%, and 12.65% higher than that of the inactive groups of SiO2 nanoparticles, respectively. The SiO2 nanoparticles modified with NH2 or C4H8 active groups were effective in improving the ultimate load-bearing capacity and bond properties of epoxy adhesives glued to CFRP/steel double lap joints, thus increasing the strain and interface shear stress peak value of the CFRP surface.

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“…Comprehending and utilizing the unique functionalities of nanoparticles has attracted considerable research attention. [1,2] To realize the full advantages of these excellent properties on nanoscale, [3] the nanoparticles should be combined with other materials that possess the desirable properties, to form hybrid composites. [4,5] For example, in the field of polymer chemistry the development of organic/inorganic hybrid composites has opened up exciting new horizons, making the preparation of composite multifunctional materials possible.…”

Section: Introductionmentioning

confidence: 99%

An Easy Preparation of BaTiO₃/PAM organic/inorganic hybrid material Using Surface-Initiated Process

Wei

Chen

et al. 2022

J. Phys.: Conf. Ser.

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Graphene Oxide Epoxy (GO‐xy): GO as Epoxy Adhesive by Interfacial Reaction of Functionalities

Abstract: COMMUNICATION 1700657 (1 of 7)

Cited by 19 publications

References 43 publications

Enhanced wear resistance of ultra‐high molecular weight polyethylene fibers by modified‐graphite oxide

Enhanced wear resistance of ultra‐high molecular weight polyethylene fibers by modified‐graphite oxide

Enhancement of Mechanical and Bond Properties of Epoxy Adhesives Modified by SiO2 Nanoparticles with Active Groups

An Easy Preparation of BaTiO₃/PAM organic/inorganic hybrid material Using Surface-Initiated Process

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Graphene Oxide Epoxy (GO‐xy): GO as Epoxy Adhesive by Interfacial Reaction of Functionalities

Abstract: COMMUNICATION 1700657 (1 of 7)

Cited by 19 publications

References 43 publications

Enhanced wear resistance of ultra‐high molecular weight polyethylene fibers by modified‐graphite oxide

Enhanced wear resistance of ultra‐high molecular weight polyethylene fibers by modified‐graphite oxide

Enhancement of Mechanical and Bond Properties of Epoxy Adhesives Modified by SiO2 Nanoparticles with Active Groups

An Easy Preparation of BaTiO3/PAM organic/inorganic hybrid material Using Surface-Initiated Process

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An Easy Preparation of BaTiO₃/PAM organic/inorganic hybrid material Using Surface-Initiated Process