Shape Memory Polymer Foam Based on Nanofibrillar Composites of Polylactide/Polyamide

Dhanumalayan Elumalai; Ramin Hosseinnezhad; Vladislav Bondarenko; Jerzy Morawiec; Iurii Vozniak; Andrzej Galeski

doi:10.20944/preprints202409.1799.v1

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preprints.org > chemistry and materials science > materials science and technology > doi: 10.20944/preprints202409.1799.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Shape Memory Polymer Foam Based on Nanofibrillar Composites of Polylactide/Polyamide

Dhanumalayan Elumalai

^* ,

Version 1 : Received: 21 September 2024 / Approved: 23 September 2024 / Online: 23 September 2024 (14:21:48 CEST)

How to cite: Elumalai, D.; Hosseinnezhad, R.; Bondarenko, V.; Morawiec, J.; Vozniak, I.; Galeski, A. Shape Memory Polymer Foam Based on Nanofibrillar Composites of Polylactide/Polyamide. Preprints 2024, 2024091799. https://doi.org/10.20944/preprints202409.1799.v1 Elumalai, D.; Hosseinnezhad, R.; Bondarenko, V.; Morawiec, J.; Vozniak, I.; Galeski, A. Shape Memory Polymer Foam Based on Nanofibrillar Composites of Polylactide/Polyamide. Preprints 2024, 2024091799. https://doi.org/10.20944/preprints202409.1799.v1

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MDPI and ACS Style

Elumalai, D.; Hosseinnezhad, R.; Bondarenko, V.; Morawiec, J.; Vozniak, I.; Galeski, A. Shape Memory Polymer Foam Based on Nanofibrillar Composites of Polylactide/Polyamide. Preprints 2024, 2024091799. https://doi.org/10.20944/preprints202409.1799.v1

APA Style

Elumalai, D., Hosseinnezhad, R., Bondarenko, V., Morawiec, J., Vozniak, I., & Galeski, A. (2024). Shape Memory Polymer Foam Based on Nanofibrillar Composites of Polylactide/Polyamide. Preprints. https://doi.org/10.20944/preprints202409.1799.v1

Chicago/Turabian Style

Elumalai, D., Iurii Vozniak and Andrzej Galeski. 2024 "Shape Memory Polymer Foam Based on Nanofibrillar Composites of Polylactide/Polyamide" Preprints. https://doi.org/10.20944/preprints202409.1799.v1

Abstract

This paper presents the novel development of a shape memory polymer foam based on polymer-polymer nanocomposites. Herein, polylactide (PLA)/biosourced polyamide (PA) foams are fabricated by in-situ fibrillation of polymer blends and subsequent supercritical CO2 foaming technique. In this system, PLA serves as a shape memory polymer to endow this foam with a shape memory effect (SME), and in-situ generated PA nanofibers are employed to reinforce the PLA cell walls and provide an additional permanent phase. Concentration of PA, 5 wt.%, is chosen to form an entangled nanofibrillar network. Foams of PLA/PA nanoblends with the same content of constituents are fabricated to reveal the effect of minor phase morphology on the cell structure and shape memory behavior of polymer foams. Profiting from the reinforcing effect of PA nanofibers, the PLA/PA nanocomposite foam exhibits smaller foam cells, a narrower cell size distribution and a comparable cell concentration than the PLA/PA nanoblend foam. In addition, PA nanofibers, unlike PA nanodroplets, favor the shape fixation ratio and recovery ratio and shorten the shape recovery time.

Keywords

shape memory; polymer foams; polymer-polymer nanocomposites; supercritical carbon dioxide foaming

Subject

Chemistry and Materials Science, Materials Science and Technology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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