Ductility and Flame Retardancy Enhancement of PVC by Nanostructured Fly Ash

Fly ash (FA) obtained from a coal-fired local thermal power station was converted into a nanostructured material by mechano-chemical activation using a high energy planetary ball mill. Contact angle measurements and FTIR spectroscopy confirmed the surface modification of mechano-chemically activated...

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Bibliographic Details
Published in:SILICON 2019-10, Vol.11 (5), p.2241-2251
Main Authors: Patil, Akshata G., Mahendran, Arunjunairaj, Selvakumar, M., Anandhan, S.
Format: Article
Language:English
Subjects:
Basic oxides
Chemistry
Chemistry and Materials Science
Coal-fired power plants
Composite materials
Contact angle
Ductility
Elongation
Environmental Chemistry
Fly ash
Inorganic Chemistry
Lasers
Materials Science
Mechanical properties
Mechanical tests
Nanostructure
Nanostructured materials
Optical Devices
Optics
Original Paper
Photonics
Polymer Sciences
Polyvinyl chloride
Tensile strength
Thermal power plants
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Summary:Fly ash (FA) obtained from a coal-fired local thermal power station was converted into a nanostructured material by mechano-chemical activation using a high energy planetary ball mill. Contact angle measurements and FTIR spectroscopy confirmed the surface modification of mechano-chemically activated FA (MCA-FA). Subsequently, a solution casting method was used to prepare poly(vinyl chloride) (PVC) matrix composites with varying amounts of fresh FA and MCA-FA. Mechanical testing results of the composites revealed that incorporation of fresh FA in PVC resulted in a higher tensile strength with brittle failure; addition of MCA-FA to PVC resulted in higher elongation at break values while retaining the ductility of the PVC. We have proposed a plausible mechanism explaining the influence of fresh FA and MCA-FA on the mechanical behavior of these composites. As fresh FA and MCA-FA contain basic oxide materials, they tend to improve the fire retardancy of PVC even at a very small loading. Overall, the nanostructured MCA-FA could find application as a filler in PVC-based products.
ISSN:1876-990X
1876-9918
DOI:10.1007/s12633-016-9415-y