Thermally-Activated Shape Memory Behavior of Biodegradable Blends Based on Plasticized PLA and Thermoplastic Starch

Biodegradable blends based on plasticized poly(lactic acid) PLA and thermoplastic starch (TPS) have been obtained. The influence of the PLA plasticizer as a compatibility agent has been studied by using two different plasticizers such as neat oligomeric lactic acid (OLA) and functionalized with male...

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Authors: Sessini, Valentina, Salaris, Valentina, Oliver Cuenca, Victor, Tercjak Sliwinska, Agnieszka, Fiori, Stefano, López García, Daniel, Kenny, José Maria, Peponi, Laura
Format: article
Publication Date:2024
Country:España
Institution:Universidad del País Vasco
Repository:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/67732
Online Access:http://hdl.handle.net/10810/67732
Access Level:Open access
Keyword:shape memory
PLA
TPS
plasticizers
polymer blends
compatibilization
biodegradable polymers
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spelling Thermally-Activated Shape Memory Behavior of Biodegradable Blends Based on Plasticized PLA and Thermoplastic StarchSessini, ValentinaSalaris, ValentinaOliver Cuenca, VictorTercjak Sliwinska, AgnieszkaFiori, StefanoLópez García, DanielKenny, José MariaPeponi, Laurashape memoryPLATPSplasticizerspolymer blendscompatibilizationbiodegradable polymersBiodegradable blends based on plasticized poly(lactic acid) PLA and thermoplastic starch (TPS) have been obtained. The influence of the PLA plasticizer as a compatibility agent has been studied by using two different plasticizers such as neat oligomeric lactic acid (OLA) and functionalized with maleic acid (mOLA). In particular, the morphological, thermal, and mechanical properties have been studied as well as the shape memory ability of the melt-processed materials. Therefore, the influence of the interaction between different plasticizers and the PLA matrix as well as the compatibility between the two polymeric phases on the thermally-activated shape memory properties have been studied. It is very interesting to use the same additive able to act as both plasticizer and compatibilizer, decreasing the glass transition temperature of PLA to a temperature close to the physiological one, obtaining a material suitable for potential biomedical applications. In particular, we obtain that OLA-plasticized blend (oPLA/TPS) show very good thermally-activated capability at 45 °C and 50% deformation, while the blend obtained by using maleic OLA (moPLA/TPS) did not show shape memory behavior at 45 °C and 50% deformation. This fact is due to their morphological changes and the loss of two well-distinguished phases, one acting as fixed phase and the other one acting as switching phase to typically obtain shape memory response. Therefore, the thermally-activated shape memory results show that it is very important to make a balance between plasticizer and compatibilizer, considering the need of two well-established phases to obtain shape memory response.This publication is part of I+D+i proyect PID2021-123753NB-C31 funded by MCIN/AEI/10.13039/501100011033/ by “ERDF A way of making Europe” as well as TED2021-129335B-C21/AEI/10.13039/501100011033/ Unión Europea Next Generation EU/PRTR.MDPI2024202420242024info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/67732reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/MICINN/PID2021-123753NB-C31/info:eu-repo/grantAgreement/MICINN/TED2021-129335B-C21/https://www.mdpi.com/2073-4360/16/8/1107info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/es/© 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/ 4.0/).oai:addi.ehu.eus:10810/677322026-06-18T09:23:17Z
dc.title.none.fl_str_mv Thermally-Activated Shape Memory Behavior of Biodegradable Blends Based on Plasticized PLA and Thermoplastic Starch
title Thermally-Activated Shape Memory Behavior of Biodegradable Blends Based on Plasticized PLA and Thermoplastic Starch
spellingShingle Thermally-Activated Shape Memory Behavior of Biodegradable Blends Based on Plasticized PLA and Thermoplastic Starch
Sessini, Valentina
shape memory
PLA
TPS
plasticizers
polymer blends
compatibilization
biodegradable polymers
title_short Thermally-Activated Shape Memory Behavior of Biodegradable Blends Based on Plasticized PLA and Thermoplastic Starch
title_full Thermally-Activated Shape Memory Behavior of Biodegradable Blends Based on Plasticized PLA and Thermoplastic Starch
title_fullStr Thermally-Activated Shape Memory Behavior of Biodegradable Blends Based on Plasticized PLA and Thermoplastic Starch
title_full_unstemmed Thermally-Activated Shape Memory Behavior of Biodegradable Blends Based on Plasticized PLA and Thermoplastic Starch
title_sort Thermally-Activated Shape Memory Behavior of Biodegradable Blends Based on Plasticized PLA and Thermoplastic Starch
dc.creator.none.fl_str_mv Sessini, Valentina
Salaris, Valentina
Oliver Cuenca, Victor
Tercjak Sliwinska, Agnieszka
Fiori, Stefano
López García, Daniel
Kenny, José Maria
Peponi, Laura
author Sessini, Valentina
author_facet Sessini, Valentina
Salaris, Valentina
Oliver Cuenca, Victor
Tercjak Sliwinska, Agnieszka
Fiori, Stefano
López García, Daniel
Kenny, José Maria
Peponi, Laura
author_role author
author2 Salaris, Valentina
Oliver Cuenca, Victor
Tercjak Sliwinska, Agnieszka
Fiori, Stefano
López García, Daniel
Kenny, José Maria
Peponi, Laura
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv shape memory
PLA
TPS
plasticizers
polymer blends
compatibilization
biodegradable polymers
topic shape memory
PLA
TPS
plasticizers
polymer blends
compatibilization
biodegradable polymers
description Biodegradable blends based on plasticized poly(lactic acid) PLA and thermoplastic starch (TPS) have been obtained. The influence of the PLA plasticizer as a compatibility agent has been studied by using two different plasticizers such as neat oligomeric lactic acid (OLA) and functionalized with maleic acid (mOLA). In particular, the morphological, thermal, and mechanical properties have been studied as well as the shape memory ability of the melt-processed materials. Therefore, the influence of the interaction between different plasticizers and the PLA matrix as well as the compatibility between the two polymeric phases on the thermally-activated shape memory properties have been studied. It is very interesting to use the same additive able to act as both plasticizer and compatibilizer, decreasing the glass transition temperature of PLA to a temperature close to the physiological one, obtaining a material suitable for potential biomedical applications. In particular, we obtain that OLA-plasticized blend (oPLA/TPS) show very good thermally-activated capability at 45 °C and 50% deformation, while the blend obtained by using maleic OLA (moPLA/TPS) did not show shape memory behavior at 45 °C and 50% deformation. This fact is due to their morphological changes and the loss of two well-distinguished phases, one acting as fixed phase and the other one acting as switching phase to typically obtain shape memory response. Therefore, the thermally-activated shape memory results show that it is very important to make a balance between plasticizer and compatibilizer, considering the need of two well-established phases to obtain shape memory response.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/67732
url http://hdl.handle.net/10810/67732
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MICINN/PID2021-123753NB-C31/
info:eu-repo/grantAgreement/MICINN/TED2021-129335B-C21/
https://www.mdpi.com/2073-4360/16/8/1107
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/es/
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/es/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,198674

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