Electrical and thermal conductivity of ethylene vinyl acetate composite with graphene and carbon black filler

Azizi, Sohrab; David, Éric; Fréchette, M.F.; Nguyen-Tri, Phuong; Ouellet-Plamondon, Claudiane

doi:10.1016/j.polymertesting.2018.09.031

Cited by 55 publications

(32 citation statements)

References 59 publications

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“…This research is a continuous works focused on polymers and multifunctional composites [67][68][69][70][71][72][73][74][75][76][77][78][79][80][81][82][83][84][85][86]. The main findings of this work were as follows:…”

Section: Discussionmentioning

confidence: 99%

Antibacterial Activity of TiO2- and ZnO-Decorated with Silver Nanoparticles

Nguyen¹,

Vu²,

Nguyen³

et al. 2019

J. Compos. Sci.

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105

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This work emphasizes the use of the silver decorative method to enhance the antibacterial activity of TiO2 and ZnO nanoparticles. These silver-decorated nanoparticles (hybrid nanoparticles) were synthesized using sodium borohydride as a reducing agent, with the weight ratio of Ag precursors/oxide nanoparticles = 1:30. The morphology and optical properties of these hybrid nanoparticles were investigated using transmission electron microscopy (TEM), X-ray diffraction (XRD) patterns, and UV-Vis spectroscopy. The agar-well diffusion method was used to evaluate their antibacterial activity against both Staphylococcus aureus and Escherichia coli bacteria, with or without light irradiation. The TEM images indicated clearly that silver nanoparticles (AgNPs, 5–10 nm) were well deposited on the surface of nano-TiO2 particles (30–60 nm). In addition to this, bigger AgNPs (<20 nm) were dispersed on the surface of nano-ZnO particles (30–50 nm). XRD patterns confirmed the presence of AgNPs in both Ag-decorated TiO2 and Ag-decorated ZnO nanoparticles. UV-Vis spectra confirmed that the hybridization of Ag and oxide nanoparticles led to a shift in the absorption edge of oxide nanoparticles to the lower energy region (visible region). The antibacterial tests indicated that both oxide pure nanoparticles did not exhibit inhibitory effects against bacteria, with or without light irradiation. However, the presence of AgNPs in their hybrids, even at low content (<40 mg/mL), leads to a good antibacterial activity, and higher inhibition zones under light irradiation as compared to those in dark were observed.

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Section: Discussionmentioning

confidence: 99%

Antibacterial Activity of TiO2- and ZnO-Decorated with Silver Nanoparticles

Nguyen¹,

Vu²,

Nguyen³

et al. 2019

J. Compos. Sci.

Self Cite

105

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show abstract

“…Several investigations have been reported on the effect of industrial contaminants on the morphology, mechanical properties and structure of glove material. In previous works [15][16][17][18][19][20][21][22][23][24], we reported that polymers and composites [16][17][18][19][20]22,23,[25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41] can be degraded by several aging agents such as heat, water, humidity, oxygen, ozone and various other environments factors [16][17][18][19][20][21][22][23][24]. The scission, crosslinking and plasticization of polymer networks may occur and led to severe deterioration of the mechanical and physicochemical properties of the material [42], which are quite important with regard their applications in various fields of mechanical engineering.…”

Section: Introductionmentioning

confidence: 99%

Butyl Rubber-Based Composite: Thermal Degradation and Prediction of Service Lifetime

2019

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Butyl rubber-based composite (BRC) is one of the most popular materials for the fabrication of protective gloves against chemical and mechanical risks. However, in many workplaces, such as metal manufacturing or automotive mechanical services, its mechanical hazards usually appear together with metalworking fluids (MWFs). The presence of these contaminants, particularly at high temperatures, could modify its properties due to the scission, the plasticization and the crosslinking of the polymer network and thus lead to severe modification of the mechanical and physicochemical properties of material. This work aims to determine the effect of temperature and a metalworking fluid on the mechanical behavior of butyl rubber composite, dealing with crosslinking density, cohesion forces and the elastic constant of BRC, based on Mooney–Rivlin’s theory. The effect of temperature with and without MWFs on the thermo-dynamical properties and morphology of butyl membranes was also investigated. The prediction of service lifetime was then evaluated from the extrapolation of the Arrhenius plot at different temperatures.

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“…Polyethylene is one of the most common types of polyolefin and remains the most consumed polymer in the world due to its interesting good mechanical properties, its stability and its low cost [16,[19][20][21][22][23][24]. The addition of additive brings this polymer various new properties depending on end-end applications [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Biological Activity and Nanostructuration of Fe3O4-Ag/High Density Polyethylene Nanocomposites

Nguyen-Tri

Nguyen

2019

J. Compos. Sci.

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We report here the synthesis of uniform nanospheres-like silver nanoparticles (Ag NPs, 5–10 nm) and the dumbbell-like Fe3O4-Ag hybrid nanoparticles (FeAg NPs, 8–16 nm) by the use of a seeding growth method in the presence of oleic acid (OA)/oleylamine (OLA) as surfactants. The antibacterial activity of pure nanoparticles and nanocomposites by monitoring the bacterial lag–log growth has been investigated. The electron transfer from Ag NPs to Fe3O4 NPs which enhances the biological of silver nanoparticles has been proven by nanoscale Raman spectroscopy. The lamellae structure in the spherulite of FeAg NPs/High Density Polyethylene (HDPE) nanocomposites seems to play the key role in the antibacterial activity of nanocomposites, which has been proven by nanoscale AFM-IR. An atomic force microscopy coupled with nanoscale infrared microscopy (AFM-IR) is used to highlight the distribution of nanoparticles on the surface of nanocomposite at the nanoscale. The presence of FeAg NPs in PE nanocomposites has a better antibacterial activity than that reinforced by Ag NPs due to the faster Ag+ release rate from the Fe3O4-Ag hybrid nanoparticles and the ionization of Ag NPs in hybrid nanostructure.

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Electrical and thermal conductivity of ethylene vinyl acetate composite with graphene and carbon black filler

Cited by 55 publications

References 59 publications

Antibacterial Activity of TiO2- and ZnO-Decorated with Silver Nanoparticles

Antibacterial Activity of TiO2- and ZnO-Decorated with Silver Nanoparticles

Butyl Rubber-Based Composite: Thermal Degradation and Prediction of Service Lifetime

Biological Activity and Nanostructuration of Fe3O4-Ag/High Density Polyethylene Nanocomposites

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