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Non-isothermal crystallization kinetics of polypropylene/short glass fibre/multiwalled carbon nanotube composites

The non-isothermal crystallization kinetics of polypropylene (PP) reinforced with multiwalled carbon nanotubes (MWCNTs) and short glass fibres (GF) was studied by differential scanning calorimetry (DSC). The glass fibre concentration was maintained at 20 wt% and the MWCNT content ranged from 1 to 5...

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Autores principales: Rasana, Nanoth, Jayanarayanan, Karingamanna, Pegoretti, Alessandro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9090750/
https://www.ncbi.nlm.nih.gov/pubmed/35558327
http://dx.doi.org/10.1039/c8ra07243d
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author Rasana, Nanoth
Jayanarayanan, Karingamanna
Pegoretti, Alessandro
author_facet Rasana, Nanoth
Jayanarayanan, Karingamanna
Pegoretti, Alessandro
author_sort Rasana, Nanoth
collection PubMed
description The non-isothermal crystallization kinetics of polypropylene (PP) reinforced with multiwalled carbon nanotubes (MWCNTs) and short glass fibres (GF) was studied by differential scanning calorimetry (DSC). The glass fibre concentration was maintained at 20 wt% and the MWCNT content ranged from 1 to 5 wt% in the PP matrix. The crystallization studies performed by DSC showed an increase in crystallization rate and a decrease in half time of crystallization of PP in the presence of micro and nano fillers. The Avrami, Ozawa, and Mo models were applied to analyze the non-isothermal crystallization behavior of PP multiscale composites. The Avrami model could very well describe the crystallization behavior of PP to 70% of the completion of crystallization. Beyond that level, it deviated significantly for all composites. On the other hand, the kinetics of crystallization could be well described by the Mo model. The strongest nucleating effect and the lowest activation energy were obtained for the composite with 2 wt% MWCNT and 20 wt% glass fibre. The X-ray diffraction analysis showed a significant reduction in the average crystal size in accordance with the amount of MWCNTs added.
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spelling pubmed-90907502022-05-11 Non-isothermal crystallization kinetics of polypropylene/short glass fibre/multiwalled carbon nanotube composites Rasana, Nanoth Jayanarayanan, Karingamanna Pegoretti, Alessandro RSC Adv Chemistry The non-isothermal crystallization kinetics of polypropylene (PP) reinforced with multiwalled carbon nanotubes (MWCNTs) and short glass fibres (GF) was studied by differential scanning calorimetry (DSC). The glass fibre concentration was maintained at 20 wt% and the MWCNT content ranged from 1 to 5 wt% in the PP matrix. The crystallization studies performed by DSC showed an increase in crystallization rate and a decrease in half time of crystallization of PP in the presence of micro and nano fillers. The Avrami, Ozawa, and Mo models were applied to analyze the non-isothermal crystallization behavior of PP multiscale composites. The Avrami model could very well describe the crystallization behavior of PP to 70% of the completion of crystallization. Beyond that level, it deviated significantly for all composites. On the other hand, the kinetics of crystallization could be well described by the Mo model. The strongest nucleating effect and the lowest activation energy were obtained for the composite with 2 wt% MWCNT and 20 wt% glass fibre. The X-ray diffraction analysis showed a significant reduction in the average crystal size in accordance with the amount of MWCNTs added. The Royal Society of Chemistry 2018-11-22 /pmc/articles/PMC9090750/ /pubmed/35558327 http://dx.doi.org/10.1039/c8ra07243d Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Rasana, Nanoth
Jayanarayanan, Karingamanna
Pegoretti, Alessandro
Non-isothermal crystallization kinetics of polypropylene/short glass fibre/multiwalled carbon nanotube composites
title Non-isothermal crystallization kinetics of polypropylene/short glass fibre/multiwalled carbon nanotube composites
title_full Non-isothermal crystallization kinetics of polypropylene/short glass fibre/multiwalled carbon nanotube composites
title_fullStr Non-isothermal crystallization kinetics of polypropylene/short glass fibre/multiwalled carbon nanotube composites
title_full_unstemmed Non-isothermal crystallization kinetics of polypropylene/short glass fibre/multiwalled carbon nanotube composites
title_short Non-isothermal crystallization kinetics of polypropylene/short glass fibre/multiwalled carbon nanotube composites
title_sort non-isothermal crystallization kinetics of polypropylene/short glass fibre/multiwalled carbon nanotube composites
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9090750/
https://www.ncbi.nlm.nih.gov/pubmed/35558327
http://dx.doi.org/10.1039/c8ra07243d
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AT pegorettialessandro nonisothermalcrystallizationkineticsofpolypropyleneshortglassfibremultiwalledcarbonnanotubecomposites