Structure and performance of ZnO/PVC nanocomposites

Elashmawi, I.S.; Hakeem, N. A.; Marei, L. K.; Hanna, F.F.

doi:10.1016/j.physb.2010.07.006

Cited by 106 publications

(53 citation statements)

References 25 publications

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“…The TSDC for all samples show the same behavior with a single characteristic peak, which covering the glass transition temperature range (333-349) K, is assigned to the α-relaxation of PVVH chains in an interfacial layer close to ZnO nanoparticles [12]. From TSDC spectra, it is clear that the glass transition temperature increases with increasing the concentration of nanoparticle in the polymeric matrix which is corresponding to the increase of the amorphous region of PVVH matrix [13]. The current of TSDC for PVVH/ZnO nanocomposites increases with increasing ZnO concentration up to 1% which can indicate the increase of dipole-dipole interaction [14].…”

Section: Tsdc Instrumentmentioning

confidence: 68%

Thermal Sampling and Compensation Phenomena of PVVH/ZnO Nanocomposite Polymer Using TSDC Technique

Ahmed¹,

Abd-Elhamid²,

Sarhan³

et al. 2017

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Thermo-electrets of poly (vinyl chloride-co-vinyl acetate-co-2 hydroxy propyl acrylate) PVVH and its nanocomposite PVVH/ZnO were prepared using the thermal poling method. Thermally stimulated depolarization current TSDC technique used to study the alpha relaxation of the samples. The global spectra of the nanocomposites revealed that ZnO nanoparticles are completely compatible with the polymer matrix. The activation energy was calculated and found to be in the range of 0.69-1.25 eV. TS technique was used to resolve the complex TSDC behavior and thermodynamic parameters were obtained from Eyring relationship which verified the linear relation between the activation enthalpy ∆H and the activation entropy ∆S. The compensation phenomena had been studied and the degree of disorder DOD of all samples has been calculated and results values in the range 15 to 35.24 Cal degree -1 .

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Section: Tsdc Instrumentmentioning

confidence: 68%

Thermal Sampling and Compensation Phenomena of PVVH/ZnO Nanocomposite Polymer Using TSDC Technique

Ahmed¹,

Abd-Elhamid²,

Sarhan³

et al. 2017

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“…The amount of ethanol necessery to create the critical conditions in the reactor was calculated from the critical volume of ethanol (0.2756 g cm 3 ) [27] and the reactor volume. Since the cooling coil and thermocouple insert in the reactor also occupied nearly 10 cm 3 , the volume of the reactor was taken as 260 cm 3 and 91 cm 3 liquid ethanol was required to create the critical conditions.…”

Section: Supercritical Ethanol Extractionmentioning

confidence: 99%

“…[27] Poly (vinyl chloride) (PVC) is one of the major thermoplastics used today, having large and broad uses in commerce. It has the unique ability to be compounded with a wide variety of additives, making it posible to produce materials in a range from flexible elastomers to rigid compounds.…”

Section: Application Potential Of Zno Nanoparticles In Diverse Areas mentioning

confidence: 99%

“…[26] This was attributed to insufficient dispersion of nano ZnO particles by the surface active agents added to polyalphaolefin. The introduction of nano-ZnO into polymer networks, e.g., PVC, has been reported [27] to improve the structural, mechanical, and thermal properties of pure PVC. However, the effect of nano ZnO on the thermal stability of PVC was not reported previously.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Supercritical Ethanol Drying on the Properties of Zinc Oxide Nanoparticles

Egbuchunam

Balköse

2012

Drying Technology

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The synthesis, characterization, and application as polymers and anti-wear additives of nanosized zinc oxide particles obtained by conventional and supercritical ethanol drying are reported in this study. The nanaoparticles of ZnO produced by the two different drying techniques were characterized using Fourier Transform Infrared (FT-IR) spectrophotometry, Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD) and Thermogravimetric analysis (TGA) to elucidate the shape, size, composition, and stability of the nanoparticles. ZnO nanoparticles were then applied to poly (vinyl chloride) (PVC) powder and light mineral oil to assess their effectiveness and suitability as additives in diverse areas. XRD analysis revealed ZnO crystalline structure with average particle size of 24.7 nm for zinc oxide nanoparticles prepared by supercritical ethanol drying while SEM showed well-isolated and monodisperse particles with average size of 61.08 nm.

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“…Studies on synthesis and physical properties of PVC based nanocomposite have been reported by many researchers such as PVC/montmorillonite (MMT) [13], PVC/ZnO [14], PVC/ CNT [15,16], PVC/CaCO 3 [17], PVC/ZnS [18], PVC/Cd (ZnO) [19], PVC/CdS [20], PVC/organo-clay [21] etc. It has been observed that the incorporation of nanomaterials into PVC improves the thermal stability, glass transition temperature, specific heat and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Influence of CdS Nano Additives on the Thermal Conductivity of Poly(vinyl chloride)/CdS Nanocomposites

Patidar¹,

Saxena²

2013

ANP

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PVC/CdS nanocomposites have been prepared by solution casting method taking 2, 4, 6 and 8 wt% of CdS nanoparticles. PVC/CdS nanocomposites were characterized through TEM measurement. The measurement of effective thermal conductivity of PVC/CdS nanocomposites has also been done using transient plane source (TPS) method. The effects of concentration of CdS nanoparticles and temperature on the effective thermal conductivity of polymer PVC/CdS nanocomposites have been studied. The variation of effective thermal conductivity with the concentration of filler particles and temperature has also been discussed in terms of dispersion of filler particles into polymer matrix and phonon scattering mechanism, respectively.

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Structure and performance of ZnO/PVC nanocomposites

Cited by 106 publications

References 25 publications

Thermal Sampling and Compensation Phenomena of PVVH/ZnO Nanocomposite Polymer Using TSDC Technique

Thermal Sampling and Compensation Phenomena of PVVH/ZnO Nanocomposite Polymer Using TSDC Technique

Effect of Supercritical Ethanol Drying on the Properties of Zinc Oxide Nanoparticles

Influence of CdS Nano Additives on the Thermal Conductivity of Poly(vinyl chloride)/CdS Nanocomposites

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