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Nanoparticle Shape Influence over Poly(lactic acid) Barrier Properties by Molecular Dynamics Simulations

[Image: see text] Climate change is leading us to search for new materials that allow a more sustainable environmental situation in the long term. Poly(lactic acid) (PLA) has been proposed as a substitute for traditional plastics due to its high biodegradability. Various components have been added t...

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Autores principales: Prada, Alejandro, González, Rafael I., Camarada, María B., Allende, Sebastián, Torres, Alejandra, Sepúlveda, Javiera, Rojas-Nunez, Javier, Baltazar, Samuel E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8890032/
https://www.ncbi.nlm.nih.gov/pubmed/35252636
http://dx.doi.org/10.1021/acsomega.1c04589
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author Prada, Alejandro
González, Rafael I.
Camarada, María B.
Allende, Sebastián
Torres, Alejandra
Sepúlveda, Javiera
Rojas-Nunez, Javier
Baltazar, Samuel E.
author_facet Prada, Alejandro
González, Rafael I.
Camarada, María B.
Allende, Sebastián
Torres, Alejandra
Sepúlveda, Javiera
Rojas-Nunez, Javier
Baltazar, Samuel E.
author_sort Prada, Alejandro
collection PubMed
description [Image: see text] Climate change is leading us to search for new materials that allow a more sustainable environmental situation in the long term. Poly(lactic acid) (PLA) has been proposed as a substitute for traditional plastics due to its high biodegradability. Various components have been added to improve their mechanical, thermal, and barrier properties. The modification of the PLA barrier properties by introducing nanoparticles with different shapes is an important aspect to control the molecular diffusion of oxygen and other gas compounds. In this work, we have described changes in oxygen diffusion by introducing nanoparticles of different shapes through molecular dynamics simulations. Our model illustrates that the existence of curved surfaces and the deposition of PLA around them by short chains generate small holes where oxygen accumulates, forming clusters and reducing their mobility. From the several considered shapes, the sphere is the most suitable structure to improve the barrier properties of the PLA.
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spelling pubmed-88900322022-03-03 Nanoparticle Shape Influence over Poly(lactic acid) Barrier Properties by Molecular Dynamics Simulations Prada, Alejandro González, Rafael I. Camarada, María B. Allende, Sebastián Torres, Alejandra Sepúlveda, Javiera Rojas-Nunez, Javier Baltazar, Samuel E. ACS Omega [Image: see text] Climate change is leading us to search for new materials that allow a more sustainable environmental situation in the long term. Poly(lactic acid) (PLA) has been proposed as a substitute for traditional plastics due to its high biodegradability. Various components have been added to improve their mechanical, thermal, and barrier properties. The modification of the PLA barrier properties by introducing nanoparticles with different shapes is an important aspect to control the molecular diffusion of oxygen and other gas compounds. In this work, we have described changes in oxygen diffusion by introducing nanoparticles of different shapes through molecular dynamics simulations. Our model illustrates that the existence of curved surfaces and the deposition of PLA around them by short chains generate small holes where oxygen accumulates, forming clusters and reducing their mobility. From the several considered shapes, the sphere is the most suitable structure to improve the barrier properties of the PLA. American Chemical Society 2022-01-12 /pmc/articles/PMC8890032/ /pubmed/35252636 http://dx.doi.org/10.1021/acsomega.1c04589 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Prada, Alejandro
González, Rafael I.
Camarada, María B.
Allende, Sebastián
Torres, Alejandra
Sepúlveda, Javiera
Rojas-Nunez, Javier
Baltazar, Samuel E.
Nanoparticle Shape Influence over Poly(lactic acid) Barrier Properties by Molecular Dynamics Simulations
title Nanoparticle Shape Influence over Poly(lactic acid) Barrier Properties by Molecular Dynamics Simulations
title_full Nanoparticle Shape Influence over Poly(lactic acid) Barrier Properties by Molecular Dynamics Simulations
title_fullStr Nanoparticle Shape Influence over Poly(lactic acid) Barrier Properties by Molecular Dynamics Simulations
title_full_unstemmed Nanoparticle Shape Influence over Poly(lactic acid) Barrier Properties by Molecular Dynamics Simulations
title_short Nanoparticle Shape Influence over Poly(lactic acid) Barrier Properties by Molecular Dynamics Simulations
title_sort nanoparticle shape influence over poly(lactic acid) barrier properties by molecular dynamics simulations
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8890032/
https://www.ncbi.nlm.nih.gov/pubmed/35252636
http://dx.doi.org/10.1021/acsomega.1c04589
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