Poly(vinyl chloride)/single wall carbon nanotubes composites: Investigation of mechanical and thermal characteristics

Zanjanijam, Ali Reza; Bahrami, Mohammad; Khiadani, Mehdi

doi:10.1002/vnl.21413

Cited by 19 publications

(17 citation statements)

References 34 publications

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“…These factors resulted in good interaction between the functionalized nanotubes and the PVB matrix, and consequently, better stress transfer from the polymer to the filler was created. The obtained results also showed that similar to the our previous study and other reports, there was a critical nanotube loading in the PVB matrix, below which the reinforcing effect for nanocomposites increased with increasing nanotube content. This critical point for the f‐SWCNTs in this study was about 0.9 wt %.…”

Section: Resultssupporting

confidence: 91%

Improving the thermal and mechanical properties of poly(vinyl butyral) through the incorporation of acid‐treated single‐walled carbon nanotubes

Zanjanijam

Khiadani

Koohmareh

2014

J of Applied Polymer Sci

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In this study, to investigate the effect of functionalized carbon nanotubes on the thermal and mechanical properties of the poly(vinyl butyral) (PVB) resin, PVB/functionalized single-walled carbon nanotube (f-SWCNT) composites were fabricated by a solution casting method. The functionalized nanotubes were prepared by acid treatment. The formation of oxygen-containing functional groups on the surface of the nanotubes was confirmed by Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, and scanning electron microscopy (SEM) measurements. SEM analysis also showed that the nanotubes were dispersed well in the PVB matrix. The thermal stability of the composites were investigated with thermogravimetric analysis, and the results show better stability for PVB in the presence of a very low content of the f-SWCNTs. The prepared composites exhibited a significant increase in the temperature of degradation at 50 wt % loss and also in the onset temperature and decomposition temperature at the maximum rate of weight loss of butyral degradation. A significant enhancement in the mechanical properties was also achieved for these prepared composites.

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Section: Resultssupporting

confidence: 91%

Improving the thermal and mechanical properties of poly(vinyl butyral) through the incorporation of acid‐treated single‐walled carbon nanotubes

Zanjanijam

Khiadani

Koohmareh

2014

J of Applied Polymer Sci

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“…The SEM image for the PVC/SWCNT showed that the carbon nanotubes generated bridges in cracks and, consequently, improved the mechanical and thermal properties of the composite. This has been reported in our previous works . These bridges could act as an obstacle for plasticizer migration.…”

Section: Resultssupporting

confidence: 79%

“…SWCNTs have a high thermal conductivity, which dissipates heat in polymers. Also, the absorption of chlorine on carbon nanotubes has been reported …”

Section: Resultsmentioning

confidence: 99%

Plasticized poly(vinyl chloride) composites: Influence of different nanofillers as antimigration agents

Gholami

Khiadani

Rafiemanzelat

et al. 2015

J of Applied Polymer Sci

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In this study, plasticized poly(vinyl chloride) (PVC) composites with different nanofillers, including single-walled carbon nanotubes (SWCNTs), organoclay, TiO 2 , and ZnO nanoparticles, were prepared, and their effects on plasticizer migration were investigated. Scanning electron micrographs revealed the dispersion quality of the nanofillers in the polymer matrix. It had a significant influence on the performance of the nanofillers in the process of plasticizer migration. Migration and exudation tests showed that the nanofillers could efficiently hinder plasticizer migration. On the basis of these results, we concluded that carbon nanotubes were the best antimigration agent in the plasticized system. This was ascribed to the high aspect ratio of the SWCNTs and the good interactions between them and the plasticizer. Also, TiO 2 nanoparticles showed a better performance compared to the ZnO nanoparticles. This was due to the more homogeneous dispersion of the TiO 2 in the polymer matrix and the higher surface area of the particles. The differential scanning calorimetry thermograms were in good agreement with the migration tests. The lowest change in the glasstransition temperature was observed for the composite filled with SWCNTs. This indicated that a lower amount of the plasticizer migrated from PVC. The thermogravimetric analysis curves showed that the incorporation of the nanofillers improved the thermal stability of the PVC. The results could be useful for determining the efficiency of plasticized PVC in applications. V C 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42559.

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“…On the other hand, Zanjanijam et al 16 observed a progressive increase in the tensile strength of SWNT/PVC composites as the nanotube content was increased from 0,25 to 0.75%, however in composites with higher nanotube contents the tensile strength was practically the same as PVC unmodified. The authors attributed this increase in tensile strength to the adequate dispersion of the nanotubes in the polymer matrix in composites containing up to 0.75% of nanoparticles, however the poor dispersion of higher nanotube contents maintains the tensile strength unchanged in relation to the isolated polymer.…”

Section: Resultsmentioning

confidence: 96%

Effect of Preparation Method on the Electrical and Mechanical Properties of PVC/Carbon Nanotubes Nanocomposites

2018

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The biggest challenge for the development of carbon nanotubes polymeric nanocomposites is in the suitable dispersion and distribution of the nanometric particles along the polymer matrix. Several preparation methods have been used to obtain nanocomposites, highlighting the mixture with polymer solution followed by solvent evaporation and the hot compacting. The first one has the advantage of allowing dispersion of the nanotubes in a low viscosity medium, while the second method is more environmental favorable due to reduced use of solvent. The aim of this work was to evaluate the influence of the preparation method on the electrical resistivity of PVC/carbon nanotubes nanocomposites, containing from 0.05 to 1.00%w of carbon nanotubes. The results showed a percolation threshold of 0.4%w and 0.15%w of nanotubes for the polymer solution method and hot compacting, respectively, and an electrical resistivity reduction of eight and nine orders of magnitude, respectively, compared to pure PVC. The tensile strength of PVC/MWNT nanocomposites was not affected by the presence or content of carbon nanotubes compared to PVC without addition of nanoparticles, regardless of the material preparation method, however the deformation at beak was largely reduced.

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Poly(vinyl chloride)/single wall carbon nanotubes composites: Investigation of mechanical and thermal characteristics

Cited by 19 publications

References 34 publications

Improving the thermal and mechanical properties of poly(vinyl butyral) through the incorporation of acid‐treated single‐walled carbon nanotubes

Improving the thermal and mechanical properties of poly(vinyl butyral) through the incorporation of acid‐treated single‐walled carbon nanotubes

Plasticized poly(vinyl chloride) composites: Influence of different nanofillers as antimigration agents

Effect of Preparation Method on the Electrical and Mechanical Properties of PVC/Carbon Nanotubes Nanocomposites

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