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Environmental particle emissions due to automated drilling of polypropylene composites and nanocomposites reinforced with talc, montmorillonite and wollastonite.

Starost, Kristof; Frijns, Evelien; Laer, J.V.; Faisal, Nadimul Haque; Egizabal, Ainhoa; Elizextea, Cristina; Nelissen, Inge; Blazquez, Maria; Njuguna, James

Authors

Kristof Starost

Evelien Frijns

J.V. Laer

Ainhoa Egizabal

Cristina Elizextea

Inge Nelissen

Maria Blazquez



Abstract

In this study, the effect on nanoparticle emissions due to drilling on Polypropylene (PP) reinforced with 20% talc, 5% montmorillonite (MMT) and 5% Wollastonite (WO) is investigated. The study is the first to explore the nanoparticle release from WO and talc reinforced composites, and compares the results to previously researched MMT. With 5% WO, equivalent tensile properties with a 10% weight reduction were obtained relative to the reference 20% talc sample. The materials were fabricated through injection moulding. The nanorelease studies were undertaken using the controlled drilling methodology for nanoparticle exposure assessment developed within the European Commission funded SIRENA Life 11 ENV/ES/506 project. Measurements were taken using CPC and DMS50 equipment for real-time characterization and measurements. The particle number concentration (of particles < 1000nm) and particle size distribution (4.87nm - 562.34nm) of the particles emitted during drilling were evaluated to investigate the effect of the silicate fillers on the particles released. The nano-filled samples exhibited a 33% decrease (MMT sample) or a 30% increase (WO sample) on the average particle number concentration released in comparison to the neat polypropylene sample. The size distribution data displayed a substantial percentage of the particles released from the PP, PP/WO and PP/MMT samples to be between 5-20nm, whereas the PP/talc sample emitted larger particle diameters.

Citation

STAROST, K., FRIJNS, E., LAER, J.V., FAISAL, N., EGIZABAL, A., ELIZEXTEA, C., NELISSEN, I., BLAZQUEZ, M. and NJUGUNA, J. 2016. Environmental particle emissions due to automated drilling of polypropylene composites and nanocomposites reinforced with talc, montmorillonite and wollastonite. IOP conference series: materials science and engineering [online], 195: proceedings of the 3rd International conference on structural nano composites (NANOSTRUC 2016), 12-16 September 2016, Aberdeen, UK, article number 012011. Available from: https://doi.org/10.1088/1757-899X/195/1/012011

Journal Article Type Conference Paper
Conference Name 3rd International conference on structural nano composites (NANOSTRUC 2016)
Start Date Sep 12, 2016
End Date Sep 16, 2016
Acceptance Date Apr 27, 2017
Online Publication Date May 11, 2017
Publication Date May 11, 2017
Deposit Date Oct 13, 2017
Publicly Available Date Oct 13, 2017
Journal IOP conference series: materials science and engineering
Print ISSN 1757-8981
Electronic ISSN 1757-899X
Publisher IOP Publishing
Peer Reviewed Peer Reviewed
Volume 195
Article Number 012011
DOI https://doi.org/10.1088/1757-899X/195/1/012011
Keywords Nanoparticle emissions; Montmorillonite (MMT); Woolastonite (WO); Fabricated; Nanorelease studies
Public URL http://hdl.handle.net/10059/2552

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Publisher Licence URL
https://creativecommons.org/licenses/by/3.0/





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