Cargando…

Gum Rosin as a Size Control Agent of Poly(Butylene Adipate-Co-Terephthalate) (PBAT) Domains to Increase the Toughness of Packaging Formulations Based on Polylactic Acid (PLA)

Gum rosin (GR) was used as a natural additive to improve the compatibility between polylactic acid, PLA, and poly(butylene adipate-co-terephthalate, PBAT, blended with 20 wt.% of PBAT (PLA/PBAT). The PBAT was used as a soft component to increase the ductility of PLA and its fracture toughness. The c...

Descripción completa

Detalles Bibliográficos
Autores principales: Aldas, Miguel, Ferri, José Miguel, Motoc, Dana Luca, Peponi, Laura, Arrieta, Marina Patricia, López-Martínez, Juan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8229187/
https://www.ncbi.nlm.nih.gov/pubmed/34201407
http://dx.doi.org/10.3390/polym13121913
_version_ 1783712918426091520
author Aldas, Miguel
Ferri, José Miguel
Motoc, Dana Luca
Peponi, Laura
Arrieta, Marina Patricia
López-Martínez, Juan
author_facet Aldas, Miguel
Ferri, José Miguel
Motoc, Dana Luca
Peponi, Laura
Arrieta, Marina Patricia
López-Martínez, Juan
author_sort Aldas, Miguel
collection PubMed
description Gum rosin (GR) was used as a natural additive to improve the compatibility between polylactic acid, PLA, and poly(butylene adipate-co-terephthalate, PBAT, blended with 20 wt.% of PBAT (PLA/PBAT). The PBAT was used as a soft component to increase the ductility of PLA and its fracture toughness. The coalescence of the PBAT domains was possible due to the plasticization effect of the GR component. These domains contributed to increasing the toughness of the final material due to the variation and control of the PBAT domains’ size and consequently, reducing the stress concentration points. The GR was used in contents of 5, 10, 15, and 20 phr. Consequently, the flexural properties were improved and the impact resistance increased up to 80% in PLA/PBAT_15GR with respect to the PLA/PBAT formulation. Field emission scanning electron microscope (FESEM) images allowed observing that the size of PBAT domains of 2–3 µm was optimal to reduce the impact stress. Differential scanning calorimetry (DSC) analysis showed a reduction of up to 8 °C on the PLA melting temperature and up to 5.3 °C of the PLA glass transition temperature in the PLA/PBAT_20GR formulation, which indicates an improvement in the processability of PLA. Finally, transparent films with improved oxygen barrier performance and increased hydrophobicity were obtained suggesting the potential interest of these blends for the food packaging industry.
format Online
Article
Text
id pubmed-8229187
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-82291872021-06-26 Gum Rosin as a Size Control Agent of Poly(Butylene Adipate-Co-Terephthalate) (PBAT) Domains to Increase the Toughness of Packaging Formulations Based on Polylactic Acid (PLA) Aldas, Miguel Ferri, José Miguel Motoc, Dana Luca Peponi, Laura Arrieta, Marina Patricia López-Martínez, Juan Polymers (Basel) Article Gum rosin (GR) was used as a natural additive to improve the compatibility between polylactic acid, PLA, and poly(butylene adipate-co-terephthalate, PBAT, blended with 20 wt.% of PBAT (PLA/PBAT). The PBAT was used as a soft component to increase the ductility of PLA and its fracture toughness. The coalescence of the PBAT domains was possible due to the plasticization effect of the GR component. These domains contributed to increasing the toughness of the final material due to the variation and control of the PBAT domains’ size and consequently, reducing the stress concentration points. The GR was used in contents of 5, 10, 15, and 20 phr. Consequently, the flexural properties were improved and the impact resistance increased up to 80% in PLA/PBAT_15GR with respect to the PLA/PBAT formulation. Field emission scanning electron microscope (FESEM) images allowed observing that the size of PBAT domains of 2–3 µm was optimal to reduce the impact stress. Differential scanning calorimetry (DSC) analysis showed a reduction of up to 8 °C on the PLA melting temperature and up to 5.3 °C of the PLA glass transition temperature in the PLA/PBAT_20GR formulation, which indicates an improvement in the processability of PLA. Finally, transparent films with improved oxygen barrier performance and increased hydrophobicity were obtained suggesting the potential interest of these blends for the food packaging industry. MDPI 2021-06-08 /pmc/articles/PMC8229187/ /pubmed/34201407 http://dx.doi.org/10.3390/polym13121913 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/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/).
spellingShingle Article
Aldas, Miguel
Ferri, José Miguel
Motoc, Dana Luca
Peponi, Laura
Arrieta, Marina Patricia
López-Martínez, Juan
Gum Rosin as a Size Control Agent of Poly(Butylene Adipate-Co-Terephthalate) (PBAT) Domains to Increase the Toughness of Packaging Formulations Based on Polylactic Acid (PLA)
title Gum Rosin as a Size Control Agent of Poly(Butylene Adipate-Co-Terephthalate) (PBAT) Domains to Increase the Toughness of Packaging Formulations Based on Polylactic Acid (PLA)
title_full Gum Rosin as a Size Control Agent of Poly(Butylene Adipate-Co-Terephthalate) (PBAT) Domains to Increase the Toughness of Packaging Formulations Based on Polylactic Acid (PLA)
title_fullStr Gum Rosin as a Size Control Agent of Poly(Butylene Adipate-Co-Terephthalate) (PBAT) Domains to Increase the Toughness of Packaging Formulations Based on Polylactic Acid (PLA)
title_full_unstemmed Gum Rosin as a Size Control Agent of Poly(Butylene Adipate-Co-Terephthalate) (PBAT) Domains to Increase the Toughness of Packaging Formulations Based on Polylactic Acid (PLA)
title_short Gum Rosin as a Size Control Agent of Poly(Butylene Adipate-Co-Terephthalate) (PBAT) Domains to Increase the Toughness of Packaging Formulations Based on Polylactic Acid (PLA)
title_sort gum rosin as a size control agent of poly(butylene adipate-co-terephthalate) (pbat) domains to increase the toughness of packaging formulations based on polylactic acid (pla)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8229187/
https://www.ncbi.nlm.nih.gov/pubmed/34201407
http://dx.doi.org/10.3390/polym13121913
work_keys_str_mv AT aldasmiguel gumrosinasasizecontrolagentofpolybutyleneadipatecoterephthalatepbatdomainstoincreasethetoughnessofpackagingformulationsbasedonpolylacticacidpla
AT ferrijosemiguel gumrosinasasizecontrolagentofpolybutyleneadipatecoterephthalatepbatdomainstoincreasethetoughnessofpackagingformulationsbasedonpolylacticacidpla
AT motocdanaluca gumrosinasasizecontrolagentofpolybutyleneadipatecoterephthalatepbatdomainstoincreasethetoughnessofpackagingformulationsbasedonpolylacticacidpla
AT peponilaura gumrosinasasizecontrolagentofpolybutyleneadipatecoterephthalatepbatdomainstoincreasethetoughnessofpackagingformulationsbasedonpolylacticacidpla
AT arrietamarinapatricia gumrosinasasizecontrolagentofpolybutyleneadipatecoterephthalatepbatdomainstoincreasethetoughnessofpackagingformulationsbasedonpolylacticacidpla
AT lopezmartinezjuan gumrosinasasizecontrolagentofpolybutyleneadipatecoterephthalatepbatdomainstoincreasethetoughnessofpackagingformulationsbasedonpolylacticacidpla