Synergistic effect between CuCr2O4 nanoparticles and plasticizer on mechanical properties of EP/PU/CuCr2O4 nanocomposites: Experimental approach and molecular dynamics simulation

Sarafrazi, Marzieh; Ghasemi, Ahmad Reza; Hamadanian, Masood

doi:10.1002/app.49425

Cited by 7 publications

(5 citation statements)

References 56 publications

(55 reference statements)

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“…The shear modulus of the nanocomposite with 25% volume of nano-silica loading reaches a value (9.0 GPa) that is 10 times higher than the value of the dry unfilled P-HEMA (0.9 GPa). These significant increases in the shear moduli compared to the values expected applying the ordinary Halpin-Tsai equations approach [ 25 ] have been attributed to the hybrid nature of the resulting nanocomposites that is stiffened at segmental level by the entangled polymer structure interpenetrating the nano-silica inorganic network [ 26 ].…”

Section: Resultsmentioning

confidence: 99%

Biomechanically Tunable Nano-Silica/P-HEMA Structural Hydrogels for Bone Scaffolding

et al. 2021

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Innovative tissue engineering biomimetic hydrogels based on hydrophilic polymers have been investigated for their physical and mechanical properties. 5% to 25% by volume loading PHEMA-nanosilica glassy hybrid samples were equilibrated at 37 °C in aqueous physiological isotonic and hypotonic saline solutions (0.15 and 0.05 M NaCl) simulating two limiting possible compositions of physiological extracellular fluids. The glassy and hydrated hybrid materials were characterized by both dynamo-mechanical properties and equilibrium absorptions in the two physiological-like aqueous solutions. The mechanical and morphological modifications occurring in the samples have been described. The 5% volume nanosilica loading hybrid nanocomposite composition showed mechanical characteristics in the dry and hydrated states that were comparable to those of cortical bone and articular cartilage, respectively, and then chosen for further sorption kinetics characterization. Sorption and swelling kinetics were monitored up to equilibrium. Changes in water activities and osmotic pressures in the water-hybrid systems equilibrated at the two limiting solute molarities of the physiological solutions have been related to the observed anomalous sorption modes using the Flory-Huggins interaction parameter approach. The bulk modulus of the dry and glassy PHEMA-5% nanosilica hybrid at 37 °C has been observed to be comparable with the values of the osmotic pressures generated from the sorption of isotonic and hypotonic solutions. The anomalous sorption modes and swelling rates are coherent with the difference between osmotic swelling pressures and hybrid glassy nano-composite bulk modulus: the lower the differences the higher the swelling rate and equilibrium solution uptakes. Bone tissue engineering benefits of the use of tuneable biomimetic scaffold biomaterials that can be “designed” to act as biocompatible and biomechanically active hybrid interfaces are discussed.

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Section: Resultsmentioning

confidence: 99%

Biomechanically Tunable Nano-Silica/P-HEMA Structural Hydrogels for Bone Scaffolding

et al. 2021

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“…The corresponding toughening mechanisms are those described previously [ 172 , 173 ]. In the work undertaken by Sarafrazi et al [ 183 ], thermoplastic polyester urethane (PU) was used to toughen a DGEBA epoxy resin containing copper chromite CuCr2O4 nanoparticles, castor oil (ECO) and montmorillonite (Cloisite 30B). A diminution in the tensile strength and rigidity was reported for the DGEBA/ECO system as a result of the decrease in the crosslinking density.…”

Section: Hybrid Epoxy Nanocompositesmentioning

confidence: 99%

Hybrid Epoxy Nanocomposites: Improvement in Mechanical Properties and Toughening Mechanisms—A Review

Białkowska¹,

Bakar²,

Kucharczyk

et al. 2023

Polymers

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This article presents a review on the recent advances in the field of ternary diglycidyl ether of bisphenol A epoxy nanocomposites containing nanoparticles and other modifiers. Particular attention is paid to their mechanical and thermal properties. The properties of epoxy resins were improved by incorporating various single toughening agents, in solid or liquid states. This latter process often resulted in the improvement in some properties at the expense of others. The use of two appropriate modifiers for the preparation of hybrid composites, possibly will show a synergistic effect on the performance properties of the composites. Due to the huge amount of modifiers that were used, the present paper will focus mainly on largely employed nanoclays with modifiers in a liquid and solid state. The former modifier contributes to an increase in the flexibility of the matrix, while the latter modifier is intended to improve other properties of the polymer depending on its structure. Various studies which were carried out on hybrid epoxy nanocomposites confirmed the occurrence of a synergistic effect within the tested performance properties of the epoxy matrix. Nevertheless, there are still ongoing research works using other nanoparticles and other modifiers aiming at enhancing the mechanical and thermal properties of epoxy resins. Despite numerous studies carried out so far to assess the fracture toughness of epoxy hybrid nanocomposites, some problems still remain unresolved. Many research groups are dealing with many aspects of the subject, namely the choice of modifiers and preparation methods, while taking into account the protection of the environment and the use of components from natural resources.

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“…Incorporation of TiO2/SiO2 in epoxy resin improves the elongation, yield strength, ultimate strength, and elastic modulus to 29.3, 17.72, 17.43, and 4.34%, respectively [13]. Also, NiMn2O4 and CuCr2O4 nanoparticles added to epoxy resin at the optimum percentage weight increased the yield and Young's modulus of NiMn2O4/EP/PU and CuCr2O4/EP/PU nanocomposites [14,15]. In addition, it has been reported that the nanocomposite Ag/CuO/Polyethylene Glycol in epoxy resin matrix has higher elongation [16].…”

Section: Introductionmentioning

confidence: 96%

The impact of CaTiO 3 -Ca 2 SiO 4 nanoparticles on the mechanical properties of an epoxy/polyvinyl acetate nanocomposite reinforced with carbon fibers

Alimirzaie,

Hamadanian

2024

Preprint

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In this study, CaTiO3-Ca2SiO4 (CT-CS) nanoparticles were synthesized via the sol-gel method. The nanocomposite was fabricated by the ultrasonic method with the addition of CT-CS nanoparticles, polyvinyl acetate (PVAc), and carbon fiber (CF) to the initial epoxy matrix. Response surface methodology-central composite design (RSM/CCD) was used to assess the impact of the weight percentage of the aforementioned ingredients on the mechanical behavior of epoxy resin. The chemical structure and morphologies of CT-CS nanoparticles and EP/PVAc/CT-CS/CF nanocomposites were assessed using FT-IR, SEM, TGA, and XRD studies. A tensile test was employed to assess mechanical properties, such as yield (MPa), area (J), modulus (MPa), stress (MPa), and strain (%). In light of this, the data gathered showed that the addition of additives had a notable impact on stress and tensile parameters in contrast to strain and area. Compared with CT-CS nanoparticles and PVAc, CF had a stronger effect in improving the mechanical properties of epoxy resin. The optimization results indicated a significant increase in stress (236.7 and 188.9%) compared to pure EP and EP/PVAc, whereas strain and area showed a slight decrease. A good synergistic effect that increases the overall stress in epoxy resin is produced by these three working well together.

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Synergistic effect between CuCr₂O₄ nanoparticles and plasticizer on mechanical properties of EP/PU/CuCr₂O₄ nanocomposites: Experimental approach and molecular dynamics simulation

Cited by 7 publications

References 56 publications

Biomechanically Tunable Nano-Silica/P-HEMA Structural Hydrogels for Bone Scaffolding

Biomechanically Tunable Nano-Silica/P-HEMA Structural Hydrogels for Bone Scaffolding

Hybrid Epoxy Nanocomposites: Improvement in Mechanical Properties and Toughening Mechanisms—A Review

The impact of CaTiO 3 -Ca 2 SiO 4 nanoparticles on the mechanical properties of an epoxy/polyvinyl acetate nanocomposite reinforced with carbon fibers

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