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Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Palm Olein Blend
Poly(lactic acid) (PLA) is known to be a useful material in substituting the conventional petroleum-based polymer used in packaging, due to its biodegradability and high mechanical strength. Despite the excellent properties of PLA, low flexibility has limited the application of this material. Thus,...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6268472/ https://www.ncbi.nlm.nih.gov/pubmed/23044711 http://dx.doi.org/10.3390/molecules171011729 |
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author | Silverajah, V. S. Giita Ibrahim, Nor Azowa Zainuddin, Norhazlin Yunus, Wan Md Zin Wan Hassan, Hazimah Abu |
author_facet | Silverajah, V. S. Giita Ibrahim, Nor Azowa Zainuddin, Norhazlin Yunus, Wan Md Zin Wan Hassan, Hazimah Abu |
author_sort | Silverajah, V. S. Giita |
collection | PubMed |
description | Poly(lactic acid) (PLA) is known to be a useful material in substituting the conventional petroleum-based polymer used in packaging, due to its biodegradability and high mechanical strength. Despite the excellent properties of PLA, low flexibility has limited the application of this material. Thus, epoxidized palm olein (EPO) was incorporated into PLA at different loadings (1, 2, 3, 4 and 5 wt%) through the melt blending technique and the product was characterized. The addition of EPO resulted in a decrease in glass transition temperature and an increase of elongation-at-break, which indicates an increase in the PLA chain mobility. PLA/EPO blends also exhibited higher thermal stability than neat PLA. Further, the PLA/1 wt% EPO blend showed enhancement in the tensile, flexural and impact properties. This is due to improved interaction in the blend producing good compatible morphologies, which can be revealed by Scanning Electron Microscopy (SEM) analysis. Therefore, PLA can be efficiently plasticized by EPO and the feasibility of its use as flexible film for food packaging should be considered. |
format | Online Article Text |
id | pubmed-6268472 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-62684722018-12-12 Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Palm Olein Blend Silverajah, V. S. Giita Ibrahim, Nor Azowa Zainuddin, Norhazlin Yunus, Wan Md Zin Wan Hassan, Hazimah Abu Molecules Article Poly(lactic acid) (PLA) is known to be a useful material in substituting the conventional petroleum-based polymer used in packaging, due to its biodegradability and high mechanical strength. Despite the excellent properties of PLA, low flexibility has limited the application of this material. Thus, epoxidized palm olein (EPO) was incorporated into PLA at different loadings (1, 2, 3, 4 and 5 wt%) through the melt blending technique and the product was characterized. The addition of EPO resulted in a decrease in glass transition temperature and an increase of elongation-at-break, which indicates an increase in the PLA chain mobility. PLA/EPO blends also exhibited higher thermal stability than neat PLA. Further, the PLA/1 wt% EPO blend showed enhancement in the tensile, flexural and impact properties. This is due to improved interaction in the blend producing good compatible morphologies, which can be revealed by Scanning Electron Microscopy (SEM) analysis. Therefore, PLA can be efficiently plasticized by EPO and the feasibility of its use as flexible film for food packaging should be considered. MDPI 2012-10-08 /pmc/articles/PMC6268472/ /pubmed/23044711 http://dx.doi.org/10.3390/molecules171011729 Text en © 2012 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 license (http://creativecommons.org/licenses/by/3.0/). |
spellingShingle | Article Silverajah, V. S. Giita Ibrahim, Nor Azowa Zainuddin, Norhazlin Yunus, Wan Md Zin Wan Hassan, Hazimah Abu Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Palm Olein Blend |
title | Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Palm Olein Blend |
title_full | Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Palm Olein Blend |
title_fullStr | Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Palm Olein Blend |
title_full_unstemmed | Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Palm Olein Blend |
title_short | Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Palm Olein Blend |
title_sort | mechanical, thermal and morphological properties of poly(lactic acid)/epoxidized palm olein blend |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6268472/ https://www.ncbi.nlm.nih.gov/pubmed/23044711 http://dx.doi.org/10.3390/molecules171011729 |
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