Effects of graphene oxide and chemically reduced graphene oxide on the curing kinetics of epoxy amine composites

2017 ◽  
Vol 134 (19) ◽  
Author(s):  
Cristina Monteserín ◽  
M. Blanco ◽  
E. Aranzabe ◽  
A. Aranzabe ◽  
J. L. Vilas
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Curing Kinetics ◽  
Epoxy Amine ◽  
Reduced Graphene ◽  
Chemically Reduced Graphene Oxide ◽  
Kinetics Of

scholarly journals Βio-Based Epoxy/Amine Reinforced with Reduced Graphene Oxide (rGO) or GLYMO-rGO: Study of Curing Kinetics, Mechanical Properties, Lamination and Bonding Performance

Nanomaterials ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 222
Author(s):  
Sheikh Rehman ◽  
Julio Gomez ◽  
Elvira Villaro ◽  
Dwane Cossey ◽  
Panagiotis G. Karagiannidis
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Curing Kinetics ◽  
Cfrp Laminates ◽  
Bonding Performance ◽  
Lap Shear ◽  
Epoxy Amine ◽  
Reduced Graphene ◽  
Carbon Fibre Reinforced Polymer ◽  
Resin Curing

In this work, we report the synthesis and study of nanocomposites with a biobased epoxy/amine (Epilok 60-600G/Curamine 30-952) matrix reinforced with reduced graphene oxide (rGO) or functionalised with 3-glycidoxypropyltrimethoxysilane (GLYMO-rGO). These graphene related materials (GRMs) were first dispersed into a Curamine hardener using bath ultrasonication, followed by the addition of epoxy resin. Curing kinetics were studied by DSC under non-isothermal and isothermal conditions. The addition of 1.5 wt% of GLYMO-rGO into the epoxy matrix was found to increase the degree of cure by up to 12% and glass transition temperature by 14 °C. Mechanical testing showed that the addition of 0.05 wt% GLYMO-rGO improves Young’s modulus and tensile strength by 60% and 16%, respectively, compared to neat epoxy. Carbon fibre reinforced polymer (CFRP) laminates were prepared via hand lay up, using the nanocomposite system GRM/Epilok/Curamine as matrix, and were cut as CFRP adherents for lap shear joints. GRM/Epilok/Curamine was also used as adhesive to bond CFRP/CFRP and CFRP/aluminium adherents. The addition of 0.1 wt% GLYMO-rGO into the adhesive and CRFP adherents showed improved lap shear strength by 23.6% compared to neat resin, while in the case of CFRP/Aluminium joints the increase was 21.2%.

scholarly journals Effects of Graphene Oxide and Chemically-Reduced Graphene Oxide on the Dynamic Mechanical Properties of Epoxy Amine Composites

Polymers ◽  
2017 ◽  
Vol 9 (12) ◽  
pp. 449 ◽  
Author(s):  
Cristina Monteserín ◽  
Miren Blanco ◽  
Estibaliz Aranzabe ◽  
Ana Aranzabe ◽  
Jose Manuel Laza ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Dynamic Mechanical Properties ◽  
Dynamic Mechanical ◽  
Epoxy Amine ◽  
Reduced Graphene ◽  
Chemically Reduced Graphene Oxide

Chemically reduced graphene oxide-coated knitted fabric imparted conductivity and outstanding hydrophobicity

2021 ◽  
pp. 004051752199547
Author(s):  
Min Hou ◽  
Xinghua Hong ◽  
Yanjun Tang ◽  
Zimin Jin ◽  
Chengyan Zhu ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Chemical Reduction ◽  
Knitted Fabric ◽  
Mesh Structure ◽  
Reduced Graphene ◽  
Chemically Reduced Graphene Oxide ◽  
Modified Hummers Method

Functionalized knitted fabric, as a kind of flexible, wearable, and waterproof material capable of conductivity, sensitivity and outstanding hydrophobicity, is valuable for multi-field applications. Herein, the reduced graphene oxide (RGO)-coated knitted fabric (polyester/spandex blended) is prepared, which involves the use of graphite oxide (GO) by modified Hummers method and in-situ chemical reduction with hydrazine hydrate. The treated fabric exhibits a high electrical conductivity (202.09 S/cm) and an outstanding hydrophobicity (140°). The outstanding hydrophobicity is associated with the morphology of the fabric and fiber with reference to pseudo-infiltration. These properties can withstand repeated bending and washing without serious deterioration, maintaining good electrical conductivity (35.70 S/cm) and contact angle (119.39°) after eight standard washing cycles. The material, which has RGO architecture and continuous loop mesh structure, can find wide use in smart garment applications.

scholarly journals Paper-based potentiometric sensing devices modified with chemically reduced graphene oxide (CRGO) for trace level determination of pholcodine (opiate derivative drug)

RSC Advances ◽  
2021 ◽  
Vol 11 (20) ◽  
pp. 12227-12234
Author(s):  
Hisham S. M. Abd-Rabboh ◽  
Abd El-Galil E. Amr ◽  
Elsayed A. Elsayed ◽  
Ahmed Y. A. Sayed ◽  
Ayman H. Kamel
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Cost Effective ◽  
Trace Level ◽  
Ion Sensing ◽  
Reduced Graphene ◽  
Chemically Reduced Graphene Oxide ◽  
Trace Level Determination ◽  
Analytical Device

Robust, reliable and cost-effective paper-based analytical device for potentiometric pholcodine (opiate derivative drug) ion sensing has been prepared and characterized.

Magnetism in pristine and chemically reduced graphene oxide

2017 ◽  
Vol 121 (4) ◽  
pp. 043906 ◽  
Author(s):  
Α. Diamantopoulou ◽  
S. Glenis ◽  
G. Zolnierkiwicz ◽  
N. Guskos ◽  
V. Likodimos
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene ◽  
Chemically Reduced Graphene Oxide

Room temperature ethanol sensing by chemically reduced graphene oxide film

FlatChem ◽  
2021 ◽  
pp. 100317
Author(s):  
Punam Tiwary ◽  
S.G. Chatterjee ◽  
S.S. Singha ◽  
Rajat Mahapatra ◽  
Amit K. Chakraborty
Keyword(s):  
Graphene Oxide ◽  
Oxide Film ◽  
Reduced Graphene Oxide ◽  
Room Temperature ◽  
Reduced Graphene ◽  
Chemically Reduced Graphene Oxide ◽  
Ethanol Sensing

A composite of CoNiP quantum dots decorating reduced graphene oxide as a sulfur host for Li-S batteries

2021 ◽  
Author(s):  
Tingjiao Xiao ◽  
Fengjin Yi ◽  
Mingzhi Yang ◽  
Weiliang Liu ◽  
Mei Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Rate Capability ◽  
Cycling Performance ◽  
Practical Application ◽  
Shuttle Effect ◽  
Reduced Graphene ◽  
Sulfur Host ◽  
Kinetics Of

The “shuttle effect” and sluggish reaction kinetics of lithium polysulfides lead to inferior cycling performance and rate capability of Li-S batteries, which hurdles their practical application. Herein, a composite of...

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