Copper oxide nanoparticles in an epoxy network: microstructure, chain confinement and mechanical behaviour

Sunny, Anu Tresa; Vijayan, P. Poornima; Adhikari, Rameshwar; Mathew, Suresh; Thomas, Sabu

doi:10.1039/c6cp02361d

Cited by 50 publications

(21 citation statements)

References 64 publications

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“…SEM image of 2 wt% loaded nanocomposite shows less deformation compared to other nanocomposites and neat PTT. Further addition of nanofiller decreases the storage modulus value because of agglomeration of MWCNT .…”

Section: Resultsmentioning

confidence: 99%

“…Theoretical calculation of storage modulus of nanocomposites is calculated using rule of mixtures, Einstein's model, Guth model, and Takayanagi model. The equation for rule of mixture is

E_{c}^{'} = E_{m}^{'} ((), 1 + v_{1}),

where

E_{c}^{'}

and

E_{m}^{'}

are the storage modulus of nanocomposite and neat polymer respectively, and v 1 is the volume fraction of nanofiller .…”

Section: Resultsmentioning

confidence: 99%

“…But this is applicable only for nanocomposites containing nanofillers in the lower concentration. By considering degree of physical and chemical interaction between the filler and matrix, Guth modified Einstein's equation . The equation is

E_{c}^{'} = E_{m}^{'} ((), 1 + 2.5 v_{1} + 14.1 v_{1}^{2}) .

…”

Section: Resultsmentioning

confidence: 99%

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Carbon nanotube reinforced poly(trimethylene terephthalate) nanocomposites: Viscoelastic properties and chain confinement

Aswathi

Padmanabhan

Mathew

et al. 2018

Polymer Engineering & Sci

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Through a very facile route, a new class of nanocomposites involving poly(trimethylene terephthalate; PTT) and multiwalled carbon nanotubes (MWCNTs) was developed which was found to be high performance engineering material showing high modulus. Morphological, mechanical, viscoelastic, and thermal properties of the PTT nanocomposites with varying compositions of MWCNT were systematically studied and the results were analyzed. The dynamic mechanical and tensile properties of all the nanocomposites were seen to be enhanced with the addition of MWCNT and the sample containing 2 wt% MWCNT showing a storage modulus as much as 9.4 × 108 GPa. The results were correlated with the morphological features obtained from scanning electron microscopy and transmission electron microscopy. Coefficient of effectiveness, degree of entanglement density, and reinforcement efficiency factor were estimated from the storage modulus values and, in addition, the degree of chain confinement also could be quantified. Furthermore, theoretical modelling was also done on the elastic properties of the composites. The crystallization temperature, glass transition temperature, and percentage crystallinity were estimated for all the nanocomposites and it was found that the sample with 3 wt% MWCNT content exhibited the highest glass transition temperature of 68.2°C. POLYM. ENG. SCI., 59:E435–E445, 2019. © 2018 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 99%

“…Theoretical calculation of storage modulus of nanocomposites is calculated using rule of mixtures, Einstein's model, Guth model, and Takayanagi model. The equation for rule of mixture is

E_{c}^{'} = E_{m}^{'} ((), 1 + v_{1}),

where

E_{c}^{'}

and

E_{m}^{'}

are the storage modulus of nanocomposite and neat polymer respectively, and v 1 is the volume fraction of nanofiller .…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Carbon nanotube reinforced poly(trimethylene terephthalate) nanocomposites: Viscoelastic properties and chain confinement

Aswathi

Padmanabhan

Mathew

et al. 2018

Polymer Engineering & Sci

Self Cite

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“…Researchers have reported the successful incorporation of carbon‐based nanofillers such as graphene, carbon nanotubes, fullerenes, and carbon black powder with a respective improvement in mechanical and thermal properties 7–13 . Other researchers have focused on the use of inorganic metallic fillers such as nickel and aluminum and metal oxides such as zinc, silica, and copper oxides to improve the resin's properties 14–18 …”

Section: Introductionmentioning

confidence: 99%

Thermal and mechanical properties of epoxy resin reinforced with modified iron oxide nanoparticles

Baghdadi

Youssef

Bouhadir

et al. 2021

J of Applied Polymer Sci

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Epoxy polymers, having good mechanical properties and thermal stability, are often used for engineering applications. Their properties can be further enhanced by the addition of iron oxide (Fe3O4) nanoparticles (NPs) as fillers to the resin. In this study, pristine Fe3O4 NPs were functionalized with polydopamine (PDA), (3‐glycidoxypropyl)trimethoxysilane (GPTMS), and (3‐aminopropyl)trimethoxysilane (APTES). X‐ray diffraction and scanning electron microscopy (SEM) were used to study any changes in the crystal structure and size of the NPs while Fourier‐Transform Infrared Spectroscopy (FTIR) and Thermogravimetric Analysis (TGA) were used to ensure the presence of functional groups on the surface. The mechanical properties of the Fe3O4‐based nanocomposites generally improved except when reinforced with Fe3O4/PDA. The maximum improvement in tensile strength (∼34%) and fracture toughness (∼13%) were observed for pristine Fe3O4‐based nanocomposites. Dynamic mechanical analysis (DMA) showed that the use of any of the treated NPs improved the material's initial storage modulus and had a substantial impact on its dissipation potential. Also, it was observed that the glass transition temperature measurements by DMA and differential scanning calorimetry were below that of pure epoxy. SEM of the cracked surfaces shows that the incorporation of any NPs leads to an enhancement in its thermal and mechanical properties.

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“…In addition, engineering thermoplastics like PES, PEI or ABS, with high toughness, ductility and thermally-stable properties are used to enhance the toughness of the epoxy matrix. Elastomers are known to increase the toughness of epoxy polymers, while lowering strength, heat stability and the modulus of the matrix [24].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Benzene Tetracarboxamide Polyamine and Its Effect on Epoxy Resin Properties

Lee

Seo

et al. 2018

Polymers

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Epoxy resins have found various industrial applications in high-performance thermosetting resins, high-performance composites, electronic-packaging materials, adhesives, protective coatings, etc., due to their outstanding performance, including high toughness, high-temperature performance, chemical and environmental resistance, versatile processability and adhesive properties. However, cured epoxy resins are very brittle, which limits their applications. In this work, we attempted to enhance the toughness of cured epoxy resins by introducing benzene tetracarboxamide polyamine (BTCP), synthesized from pyromellitic dianhydride (PMDA) and diamines in N-methyl-2-pyrrolidone (NMP) solvent. During this reaction, increased viscosity and formation of amic acid could be confirmed. The chemical reactions were monitored and evidenced using 1 H-NMR spectroscopy, FT-IR spectroscopy, water gel-phase chromatography (GPC) analysis, amine value determination and acid value determination. We also studied the effect of additives on thermomechanical properties using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), dynamical mechanical analysis (DMA), thermomechanical analysis (TMA) and by measuring mechanical properties. The BTCP-containing epoxy resin exhibited high mechanical strength and adhesion strength proportional to the amount of BTCP. Furthermore, field-emission scanning electron microscopy images were obtained for examining the cross-sectional morphology changes of the epoxy resin specimens with varying amounts of BTCP.

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Copper oxide nanoparticles in an epoxy network: microstructure, chain confinement and mechanical behaviour

Cited by 50 publications

References 64 publications

Carbon nanotube reinforced poly(trimethylene terephthalate) nanocomposites: Viscoelastic properties and chain confinement

Carbon nanotube reinforced poly(trimethylene terephthalate) nanocomposites: Viscoelastic properties and chain confinement

Thermal and mechanical properties of epoxy resin reinforced with modified iron oxide nanoparticles

Synthesis of Benzene Tetracarboxamide Polyamine and Its Effect on Epoxy Resin Properties

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