Volumetric composition of nanocomposites

Bo Madsen, Hans Lilholt, Juha Mannila, Rangika Thilan De Silva, Pooria Pasbakhsh

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

1 Citation (Scopus)

Abstract

Detailed characterisation of the properties of composite materials with nanoscale fibres is central for the further progress in optimization of their manufacturing and properties. In the present study, a methodology for the determination and analysis of the volumetric composition of nanocomposites is presented, using cellulose/epoxy and aluminosilicate/polylactate nanocomposites as case materials. The buoyancy method is used for the accurate measurements of materials density. The accuracy of the method is determined to be high, allowing the measured nanocomposite densities to be reported with 5 significant figures. The plotting of the measured nanocomposite density as a function of the nanofibre weight content is shown to be a first good approach of assessing the porosity content of the materials. The known gravimetric composition of the nanocomposites is converted into a volumetric composition. An analytical model, previously established for conventional fibre composites, is used for the analysis of the volumetric composition. For the aluminosilicate/polylactate nanocomposites, based on the established linear relationship between the porosity content and the fibre volume content, the fibre correlated porosity factor is determined to be 0.18. Geometrical considerations of the packingof parallel nanofibres in a square array are used to make the assumption that the maximum obtainable fibre volume content in the nanocomposites will not exceed 6 % due to the small fibre spacing that restricts full matrix impregnation. The predicted volumetric composition and density of the aluminosilicate/polylactate nanocomposites is in good agreement with the experimental data. It is demonstrated that the model provides a valuable tool for the prediction and analysis of the volumetric composition of composites with nanoscale fibres.
Original languageEnglish
Title of host publicationProceedings of ICCM20
Number of pages10
Publication statusPublished - 2015
MoE publication typeB3 Non-refereed article in conference proceedings
Event20th International Conference on Composite Materials, ICCM20 - Copenhagen, Denmark
Duration: 19 Jul 201524 Jul 2015
Conference number: 20
http://www.iccm20.org/welcome (20th International Conference on Composite Materials, ICCM20)

Conference

Conference20th International Conference on Composite Materials, ICCM20
Abbreviated titleICCM20
CountryDenmark
CityCopenhagen
Period19/07/1524/07/15
Internet address

Fingerprint

Nanocomposites
Fibers
Chemical analysis
Porosity
Nanofibers
Composite materials
Buoyancy
Impregnation
Cellulose
Analytical models
aluminosilicate
poly(lactic acid)

Cite this

Madsen, B., Lilholt, H., Mannila, J., De Silva, R. T., & Pasbakhsh, P. (2015). Volumetric composition of nanocomposites. In Proceedings of ICCM20
Madsen, Bo ; Lilholt, Hans ; Mannila, Juha ; De Silva, Rangika Thilan ; Pasbakhsh, Pooria. / Volumetric composition of nanocomposites. Proceedings of ICCM20. 2015.
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title = "Volumetric composition of nanocomposites",
abstract = "Detailed characterisation of the properties of composite materials with nanoscale fibres is central for the further progress in optimization of their manufacturing and properties. In the present study, a methodology for the determination and analysis of the volumetric composition of nanocomposites is presented, using cellulose/epoxy and aluminosilicate/polylactate nanocomposites as case materials. The buoyancy method is used for the accurate measurements of materials density. The accuracy of the method is determined to be high, allowing the measured nanocomposite densities to be reported with 5 significant figures. The plotting of the measured nanocomposite density as a function of the nanofibre weight content is shown to be a first good approach of assessing the porosity content of the materials. The known gravimetric composition of the nanocomposites is converted into a volumetric composition. An analytical model, previously established for conventional fibre composites, is used for the analysis of the volumetric composition. For the aluminosilicate/polylactate nanocomposites, based on the established linear relationship between the porosity content and the fibre volume content, the fibre correlated porosity factor is determined to be 0.18. Geometrical considerations of the packingof parallel nanofibres in a square array are used to make the assumption that the maximum obtainable fibre volume content in the nanocomposites will not exceed 6 {\%} due to the small fibre spacing that restricts full matrix impregnation. The predicted volumetric composition and density of the aluminosilicate/polylactate nanocomposites is in good agreement with the experimental data. It is demonstrated that the model provides a valuable tool for the prediction and analysis of the volumetric composition of composites with nanoscale fibres.",
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Madsen, B, Lilholt, H, Mannila, J, De Silva, RT & Pasbakhsh, P 2015, Volumetric composition of nanocomposites. in Proceedings of ICCM20. 20th International Conference on Composite Materials, ICCM20, Copenhagen, Denmark, 19/07/15.

Volumetric composition of nanocomposites. / Madsen, Bo; Lilholt, Hans; Mannila, Juha; De Silva, Rangika Thilan; Pasbakhsh, Pooria.

Proceedings of ICCM20. 2015.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

TY - GEN

T1 - Volumetric composition of nanocomposites

AU - Madsen, Bo

AU - Lilholt, Hans

AU - Mannila, Juha

AU - De Silva, Rangika Thilan

AU - Pasbakhsh, Pooria

PY - 2015

Y1 - 2015

N2 - Detailed characterisation of the properties of composite materials with nanoscale fibres is central for the further progress in optimization of their manufacturing and properties. In the present study, a methodology for the determination and analysis of the volumetric composition of nanocomposites is presented, using cellulose/epoxy and aluminosilicate/polylactate nanocomposites as case materials. The buoyancy method is used for the accurate measurements of materials density. The accuracy of the method is determined to be high, allowing the measured nanocomposite densities to be reported with 5 significant figures. The plotting of the measured nanocomposite density as a function of the nanofibre weight content is shown to be a first good approach of assessing the porosity content of the materials. The known gravimetric composition of the nanocomposites is converted into a volumetric composition. An analytical model, previously established for conventional fibre composites, is used for the analysis of the volumetric composition. For the aluminosilicate/polylactate nanocomposites, based on the established linear relationship between the porosity content and the fibre volume content, the fibre correlated porosity factor is determined to be 0.18. Geometrical considerations of the packingof parallel nanofibres in a square array are used to make the assumption that the maximum obtainable fibre volume content in the nanocomposites will not exceed 6 % due to the small fibre spacing that restricts full matrix impregnation. The predicted volumetric composition and density of the aluminosilicate/polylactate nanocomposites is in good agreement with the experimental data. It is demonstrated that the model provides a valuable tool for the prediction and analysis of the volumetric composition of composites with nanoscale fibres.

AB - Detailed characterisation of the properties of composite materials with nanoscale fibres is central for the further progress in optimization of their manufacturing and properties. In the present study, a methodology for the determination and analysis of the volumetric composition of nanocomposites is presented, using cellulose/epoxy and aluminosilicate/polylactate nanocomposites as case materials. The buoyancy method is used for the accurate measurements of materials density. The accuracy of the method is determined to be high, allowing the measured nanocomposite densities to be reported with 5 significant figures. The plotting of the measured nanocomposite density as a function of the nanofibre weight content is shown to be a first good approach of assessing the porosity content of the materials. The known gravimetric composition of the nanocomposites is converted into a volumetric composition. An analytical model, previously established for conventional fibre composites, is used for the analysis of the volumetric composition. For the aluminosilicate/polylactate nanocomposites, based on the established linear relationship between the porosity content and the fibre volume content, the fibre correlated porosity factor is determined to be 0.18. Geometrical considerations of the packingof parallel nanofibres in a square array are used to make the assumption that the maximum obtainable fibre volume content in the nanocomposites will not exceed 6 % due to the small fibre spacing that restricts full matrix impregnation. The predicted volumetric composition and density of the aluminosilicate/polylactate nanocomposites is in good agreement with the experimental data. It is demonstrated that the model provides a valuable tool for the prediction and analysis of the volumetric composition of composites with nanoscale fibres.

M3 - Conference article in proceedings

BT - Proceedings of ICCM20

ER -

Madsen B, Lilholt H, Mannila J, De Silva RT, Pasbakhsh P. Volumetric composition of nanocomposites. In Proceedings of ICCM20. 2015