Expanded polylactide bead foaming - A new technology

M. Nofar; A. Ameli; C. B. Park

doi:10.1063/1.4918400

Expanded polylactide bead foaming - A new technology

M. Nofar, A. Ameli, C. B. Park

University of Toronto

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

3 Citations (Scopus)

Abstract

Bead foaming technology with double crystal melting peak structure has been recognized as a promising method to produce low-density foams with complex geometries. During the molding stage of the bead foams, the double peak structure generates a strong bead-to-bead sintering and maintains the overall foam structure. During recent years, polylactide (PLA) bead foaming has been of the great interest of researchers due to its origin from renewable resources and biodegradability. However, due to the PLA's low melt strength and slow crystallization kinetics, the attempts have been limited to the manufacturing methods used for expanded polystyrene. In this study, for the first time, we developed microcellular PLA bead foams with double crystal melting peak structure. Microcellular PLA bead foams were produced with expansion ratios and average cell sizes ranging from 3 to 30-times and 350 nm to 15 μm, respectively. The generated high melting temperature crystals during the saturation significantly affected the expansion ratio and cell density of the PLA bead foams by enhancing the PLA's poor melt strength and promoting heterogeneous cell nucleation around the crystals.

Original language	English
Title of host publication	Proceedings of PPS-30
Subtitle of host publication	The 30th International Conference of the Polymer Processing Society - Conference Papers
Editors	Sadhan C. Jana
Publisher	American Institute of Physics Inc.
ISBN (Electronic)	9780735413092
DOIs	https://doi.org/10.1063/1.4918400
Publication status	Published - 22 May 2015
Externally published	Yes
Event	30th International Conference of the Polymer Processing Society, PPS 2014 - Cleveland, United States Duration: 6 Jun 2014 → 12 Jun 2014

Publication series

Name	AIP Conference Proceedings
Volume	1664
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	30th International Conference of the Polymer Processing Society, PPS 2014
Country/Territory	United States
City	Cleveland
Period	6/06/14 → 12/06/14

Bibliographical note

Publisher Copyright:
© 2015 AIP Publishing LLC.

Keywords

Bead Foaming
Crystallization
Microcellular
Nanocellular
Polylactide

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1063/1.4918400

Cite this

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title = "Expanded polylactide bead foaming - A new technology",

abstract = "Bead foaming technology with double crystal melting peak structure has been recognized as a promising method to produce low-density foams with complex geometries. During the molding stage of the bead foams, the double peak structure generates a strong bead-to-bead sintering and maintains the overall foam structure. During recent years, polylactide (PLA) bead foaming has been of the great interest of researchers due to its origin from renewable resources and biodegradability. However, due to the PLA's low melt strength and slow crystallization kinetics, the attempts have been limited to the manufacturing methods used for expanded polystyrene. In this study, for the first time, we developed microcellular PLA bead foams with double crystal melting peak structure. Microcellular PLA bead foams were produced with expansion ratios and average cell sizes ranging from 3 to 30-times and 350 nm to 15 μm, respectively. The generated high melting temperature crystals during the saturation significantly affected the expansion ratio and cell density of the PLA bead foams by enhancing the PLA's poor melt strength and promoting heterogeneous cell nucleation around the crystals.",

keywords = "Bead Foaming, Crystallization, Microcellular, Nanocellular, Polylactide",

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Nofar, M, Ameli, A & Park, CB 2015, Expanded polylactide bead foaming - A new technology. in SC Jana (ed.), Proceedings of PPS-30: The 30th International Conference of the Polymer Processing Society - Conference Papers., 400021, AIP Conference Proceedings, vol. 1664, American Institute of Physics Inc., 30th International Conference of the Polymer Processing Society, PPS 2014, Cleveland, United States, 6/06/14. https://doi.org/10.1063/1.4918400

Expanded polylactide bead foaming - A new technology. / Nofar, M.; Ameli, A.; Park, C. B.
Proceedings of PPS-30: The 30th International Conference of the Polymer Processing Society - Conference Papers. ed. / Sadhan C. Jana. American Institute of Physics Inc., 2015. 400021 (AIP Conference Proceedings; Vol. 1664).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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KW - Bead Foaming

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KW - Nanocellular

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Expanded polylactide bead foaming - A new technology

Abstract

Publication series

Conference

Bibliographical note

Keywords

UN SDGs

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