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Thermal Stability Evaluation of Polystyrene-Mg/Zn/Al LDH Nanocomposites
A series of samples of Mg/Zn/Al LDHs (layered double hydroxides) materials was prepared by the co-precipitation and urea hydrolysis methods. They were modified with organic surfactants (acrylate and oleate anions) and characterized by X-ray diffraction, which corroborated the intercalation of anioni...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6915476/ https://www.ncbi.nlm.nih.gov/pubmed/31717847 http://dx.doi.org/10.3390/nano9111528 |
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author | De la Rosa-Guzmán, Miguel Ángel Guzmán-Vargas, Ariel Cayetano-Castro, Nicolás Del Río, José Manuel Corea, Mónica Martínez-Ortiz, María de Jesús |
author_facet | De la Rosa-Guzmán, Miguel Ángel Guzmán-Vargas, Ariel Cayetano-Castro, Nicolás Del Río, José Manuel Corea, Mónica Martínez-Ortiz, María de Jesús |
author_sort | De la Rosa-Guzmán, Miguel Ángel |
collection | PubMed |
description | A series of samples of Mg/Zn/Al LDHs (layered double hydroxides) materials was prepared by the co-precipitation and urea hydrolysis methods. They were modified with organic surfactants (acrylate and oleate anions) and characterized by X-ray diffraction, which corroborated the intercalation of anionic species into the interlayer space. The hydrophobized materials were incorporated at low contents (10 and 15 wt.%) to polystyrene, which was synthesized by emulsion polymerization techniques. The polymeric composites were analyzed by thermogravimetry to determine the decomposition temperature. The results demonstrated that the materials with Zn presented the greatest increment in the degradation temperature (7 °C < T < 54 °C). Moreover, the Friedman, Flynn–Wall–Ozawa, and Coats–Redfern models were compared to obtain the kinetic parameters of degradation process. The obtained order of decomposition of the Coats–Redfern model showed that the decomposition process occurs in at least two stages. Finally, the addition of environmentally friendly modified Layered Double Hydroxides (LDH) nanomaterials to the polystyrene (PS) matrix allowed for obtaining polymeric composites with higher thermal stability, retarding the decomposition process of PS. |
format | Online Article Text |
id | pubmed-6915476 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-69154762019-12-24 Thermal Stability Evaluation of Polystyrene-Mg/Zn/Al LDH Nanocomposites De la Rosa-Guzmán, Miguel Ángel Guzmán-Vargas, Ariel Cayetano-Castro, Nicolás Del Río, José Manuel Corea, Mónica Martínez-Ortiz, María de Jesús Nanomaterials (Basel) Article A series of samples of Mg/Zn/Al LDHs (layered double hydroxides) materials was prepared by the co-precipitation and urea hydrolysis methods. They were modified with organic surfactants (acrylate and oleate anions) and characterized by X-ray diffraction, which corroborated the intercalation of anionic species into the interlayer space. The hydrophobized materials were incorporated at low contents (10 and 15 wt.%) to polystyrene, which was synthesized by emulsion polymerization techniques. The polymeric composites were analyzed by thermogravimetry to determine the decomposition temperature. The results demonstrated that the materials with Zn presented the greatest increment in the degradation temperature (7 °C < T < 54 °C). Moreover, the Friedman, Flynn–Wall–Ozawa, and Coats–Redfern models were compared to obtain the kinetic parameters of degradation process. The obtained order of decomposition of the Coats–Redfern model showed that the decomposition process occurs in at least two stages. Finally, the addition of environmentally friendly modified Layered Double Hydroxides (LDH) nanomaterials to the polystyrene (PS) matrix allowed for obtaining polymeric composites with higher thermal stability, retarding the decomposition process of PS. MDPI 2019-10-27 /pmc/articles/PMC6915476/ /pubmed/31717847 http://dx.doi.org/10.3390/nano9111528 Text en © 2019 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 (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article De la Rosa-Guzmán, Miguel Ángel Guzmán-Vargas, Ariel Cayetano-Castro, Nicolás Del Río, José Manuel Corea, Mónica Martínez-Ortiz, María de Jesús Thermal Stability Evaluation of Polystyrene-Mg/Zn/Al LDH Nanocomposites |
title | Thermal Stability Evaluation of Polystyrene-Mg/Zn/Al LDH Nanocomposites |
title_full | Thermal Stability Evaluation of Polystyrene-Mg/Zn/Al LDH Nanocomposites |
title_fullStr | Thermal Stability Evaluation of Polystyrene-Mg/Zn/Al LDH Nanocomposites |
title_full_unstemmed | Thermal Stability Evaluation of Polystyrene-Mg/Zn/Al LDH Nanocomposites |
title_short | Thermal Stability Evaluation of Polystyrene-Mg/Zn/Al LDH Nanocomposites |
title_sort | thermal stability evaluation of polystyrene-mg/zn/al ldh nanocomposites |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6915476/ https://www.ncbi.nlm.nih.gov/pubmed/31717847 http://dx.doi.org/10.3390/nano9111528 |
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