Characterization of Nanocomposites by Thermal Analysis

Corcione, Carola Esposito; Frigione, Mariaenrica

doi:10.3390/ma5122960

Cited by 182 publications

(91 citation statements)

References 102 publications

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“…The increase in residue can be attributed the remnants of the inorganic particles and char, formed during the degradation to slow down the combustion of the polymer. Char is also responsible for the impermeability of volatile components which accelerates combustion . ENP is porous in nature, hence, it can permit the infiltrations of volatile components to accelerate thermal decomposition.…”

Section: Resultsmentioning

confidence: 99%

Eggshell reinforced biocomposite—An advanced “green” alternative structural material

Tiimob

Jeelani

Rangari

2015

J of Applied Polymer Sci

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ABSTRACT:The need for bio-based polymers as substitutes to recalcitrant petroleum sourced plastics is ever growing, because of increase in demand globally. Eggshell nanopowder (ENP) prepared using mechanical attrition and ultrasound irradiation was used to infuse a bio-based polymer [Super Sap 100/1000 epoxy (SSE)] for possible enhancement of its mechanical properties. The ENP, neat SSE and SSE/ENP composites were characterized using X-ray Diffraction, Transmission Electron Microscopy (TEM), Energy dispersive spectroscopy (EDS), Scanning Electron Microscopy, Thermogravimetic Analysis (TGA), Dynamic Mechanical Analysis (DMA), Thermomechanical Analysis (TMA) and flexure analysis. TEM and EDS analysis showed evidence of ENP in the SSE matrix whiles DMA and TMA analysis revealed significant improvements (7-22%) in the storage moduli and (3-17%) in coefficient of thermal expansion (CTE) respectively. Also, major delay in 5% decomposition temperatures and increases in char yields were observed in TGA analysis. The flexure strength, modulus, and toughness significantly improved by 6-31%, 11-37%, and 10-36%, respectively. Microstructure of fractured surfaces showed deflected crack paths which contributed to improve toughness. V C 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43124.

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Section: Resultsmentioning

confidence: 99%

Eggshell reinforced biocomposite—An advanced “green” alternative structural material

Tiimob

Jeelani

Rangari

2015

J of Applied Polymer Sci

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“…The decomposition of the PLA/PBAT nanocomposites at high temperature resulted from the "labyrinth" effect of the OMMT platelets dispersed on the nanometre scale in the PLA/PBAT, which was caused by strong interaction 15 between OMMT platelets and PLA/PBAT. This process required more heat to break the bonding between PLA/PBAT/OMMT compared with the other nanocomposites.…”

Section: Thermal Analysismentioning

confidence: 99%

Effect of Modified Clay on the Morphological and Thermal Properties of PLA/PBAT Nanocomposites.

Osman¹,

Ibrahim²,

Yunus³

2017

Orient. J. Chem

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In this study, new biodegradable polylactic acid/poly butylene adipate-co-terephthalate nanocomposites were developed and prepared using the melt blending method. Sodium montmorillonite clay was modified using organic surfactant, octadecyl ammonium bromide, novel dimethyl dioctadecyl ammonium bromide. A commercial organomodified montmorillonite, Cloisite 20A was also used as comparison. Increased interlayer spacing, reduced free water molecule within montmorillonite clay gallery spacing and existence of alkyl group signature confirmed that organomodified montmorillonite was successfully prepared via ion exchange technique. The present work introduced 1% organomodified montmorillonite into PLA/PBAT blends. Surface morphology improved with addition of OMMT. Transition electron microscope analysis revealed exfoliated distribution between the organoclay and the matrix. The onset temperature (T onset ) increased after the addition of organoclay.

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“…The effect of the nanoparticles on T g can be explained by the enthalpic interaction between the polymer and the nanoparticles. Either an increase or decrease in T g can be induced depending on the specific interaction . This clearly indicates that the movement of polymer chains becomes easier on the addition of ZnO to the PVC/PVDF polymer blend.…”

Section: Resultsmentioning

confidence: 94%

Electrical properties and thermal degradation of poly(vinyl chloride)/polyvinylidene fluoride/ZnO polymer nanocomposites

Pandey

Joshi

Mukherjee

et al. 2016

Polymer International

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In this work, polymer nanocomposites consisting of a poly(vinyl chloride) (PVC) and polyvinylidene fluoride (PVDF) polymer network with ZnO nanoparticles as a dopant were prepared by solution casting. An XRD study of the PVC/PVDF/ZnO polymer nanocomposites shows predominantly sharp and high intensity peaks. However, the intensity and sharpness of the XRD peaks decreases with further increment in loading of ZnO (wt%), which reveals a proper intercalation of ZnO nanoparticles within the PVC/PVDF polymer system. Fourier transform infrared spectroscopy has been used to verify the chemical compositional change as a function of ZnO nanoparticle loading. TGA analysis clearly describes the thermal degradation of the pure polymer and polymer nanocomposites. The complex dielectric function, AC electrical conductivity and impedance spectra of these nanocomposites were investigated over the frequency range from 10 Hz to 35 MHz. These spectra were studied with respect to the Wagner − Maxwell − Sillars phenomenon in the low frequency region. Nyquist plots of the PVC/PVDF/ZnO nanocomposites were established from impedance measurements. The temperature-dependent DC ionic conductivity obtained from the Nyquist plots follows Arrhenius behaviour.

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Characterization of Nanocomposites by Thermal Analysis

Cited by 182 publications

References 102 publications

Eggshell reinforced biocomposite—An advanced “green” alternative structural material

Eggshell reinforced biocomposite—An advanced “green” alternative structural material

Effect of Modified Clay on the Morphological and Thermal Properties of PLA/PBAT Nanocomposites.

Electrical properties and thermal degradation of poly(vinyl chloride)/polyvinylidene fluoride/ZnO polymer nanocomposites

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