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Morphology and Thermal Properties of Calcium Alginate/Reduced Graphene Oxide Composites

Calcium alginate (CaAlg) is a kind of biodegradable and eco-friendly functional material, and CaAlg/reduced graphene oxide (rGO) composites are expected to be applied as new textile, heat-generating, and flame-retardant materials. In this paper, the CaAlg/rGO composites were prepared by a sol-gel me...

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Detalles Bibliográficos
Autores principales: Zhao, Wanting, Qi, Yan, Wang, Yue, Xue, Yun, Xu, Peng, Li, Zichao, Li, Qun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6404074/
https://www.ncbi.nlm.nih.gov/pubmed/30960915
http://dx.doi.org/10.3390/polym10090990
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author Zhao, Wanting
Qi, Yan
Wang, Yue
Xue, Yun
Xu, Peng
Li, Zichao
Li, Qun
author_facet Zhao, Wanting
Qi, Yan
Wang, Yue
Xue, Yun
Xu, Peng
Li, Zichao
Li, Qun
author_sort Zhao, Wanting
collection PubMed
description Calcium alginate (CaAlg) is a kind of biodegradable and eco-friendly functional material, and CaAlg/reduced graphene oxide (rGO) composites are expected to be applied as new textile, heat-generating, and flame-retardant materials. In this paper, the CaAlg/rGO composites were prepared by a sol-gel method and their morphological and thermal properties were studied. The results showed that the introduction of rGO can efficiently improve the thermal stability of CaAlg. Further study showed that rGO increased the carbon formation rate by 4.1%, indicating that the thermal stability was improved by the promotion of carbon formation. Moreover, the weight loss rate of the composites was faster at 180–200 °C than that of CaAlg, after which the rate was less comparatively, suggesting the better thermal stability of the composite. This maybe because the high heat transfer efficiency of rGO allowed the material to reach the temperature of the thermal decomposition of the glycan molecule chain within a short time, and then promoted carbon formation. The thermal cracking mechanism of the composites is proposed based on the experimental data.
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spelling pubmed-64040742019-04-02 Morphology and Thermal Properties of Calcium Alginate/Reduced Graphene Oxide Composites Zhao, Wanting Qi, Yan Wang, Yue Xue, Yun Xu, Peng Li, Zichao Li, Qun Polymers (Basel) Article Calcium alginate (CaAlg) is a kind of biodegradable and eco-friendly functional material, and CaAlg/reduced graphene oxide (rGO) composites are expected to be applied as new textile, heat-generating, and flame-retardant materials. In this paper, the CaAlg/rGO composites were prepared by a sol-gel method and their morphological and thermal properties were studied. The results showed that the introduction of rGO can efficiently improve the thermal stability of CaAlg. Further study showed that rGO increased the carbon formation rate by 4.1%, indicating that the thermal stability was improved by the promotion of carbon formation. Moreover, the weight loss rate of the composites was faster at 180–200 °C than that of CaAlg, after which the rate was less comparatively, suggesting the better thermal stability of the composite. This maybe because the high heat transfer efficiency of rGO allowed the material to reach the temperature of the thermal decomposition of the glycan molecule chain within a short time, and then promoted carbon formation. The thermal cracking mechanism of the composites is proposed based on the experimental data. MDPI 2018-09-05 /pmc/articles/PMC6404074/ /pubmed/30960915 http://dx.doi.org/10.3390/polym10090990 Text en © 2018 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
Zhao, Wanting
Qi, Yan
Wang, Yue
Xue, Yun
Xu, Peng
Li, Zichao
Li, Qun
Morphology and Thermal Properties of Calcium Alginate/Reduced Graphene Oxide Composites
title Morphology and Thermal Properties of Calcium Alginate/Reduced Graphene Oxide Composites
title_full Morphology and Thermal Properties of Calcium Alginate/Reduced Graphene Oxide Composites
title_fullStr Morphology and Thermal Properties of Calcium Alginate/Reduced Graphene Oxide Composites
title_full_unstemmed Morphology and Thermal Properties of Calcium Alginate/Reduced Graphene Oxide Composites
title_short Morphology and Thermal Properties of Calcium Alginate/Reduced Graphene Oxide Composites
title_sort morphology and thermal properties of calcium alginate/reduced graphene oxide composites
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6404074/
https://www.ncbi.nlm.nih.gov/pubmed/30960915
http://dx.doi.org/10.3390/polym10090990
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