Pyrolytic and kinetic characteristics of the thermal decomposition of Perilla frutescens polysaccharide.

The thermal decomposition of Perilla frutescens polysaccharide was examined by thermogravimetry, differential thermogravimetry, and differential thermal analysis. The results showed that the mass loss of the substance proceeded in three steps. The first stage can be attributed to the expulsion of th...

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Autores principales:	Quancheng Zhou, Hongmei Zhang, Guihua Sheng
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a612eef350294816a6eb38f95fb7e1e3
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spelling	oai:doaj.org-article:a612eef350294816a6eb38f95fb7e1e32021-11-18T08:03:40ZPyrolytic and kinetic characteristics of the thermal decomposition of Perilla frutescens polysaccharide.1932-620310.1371/journal.pone.0052597https://doaj.org/article/a612eef350294816a6eb38f95fb7e1e32012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23300715/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203The thermal decomposition of Perilla frutescens polysaccharide was examined by thermogravimetry, differential thermogravimetry, and differential thermal analysis. The results showed that the mass loss of the substance proceeded in three steps. The first stage can be attributed to the expulsion of the water from ambient temperature to 182°C. The second stage corresponded to devolatilization from 182°C to 439°C. The residue slowly degraded in the third stage. The weight loss in air is faster than that in nitrogen, because the oxygen in air accelerated the pyrolytic reaction speed reaction. The heating rate significantly affected the pyrolysis of the sample. Similar activation energies of the degradation process (210-211 kJ mol⁻¹) were obtained by the FWO, KAS, and Popescu techniques. According to Popescu mechanism functions, the possible kinetic model was estimated to be Avrami-Erofeev 20 g(α) = [-ln(1-α)]⁴.Quancheng ZhouHongmei ZhangGuihua ShengPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 12, p e52597 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Quancheng Zhou Hongmei Zhang Guihua Sheng Pyrolytic and kinetic characteristics of the thermal decomposition of Perilla frutescens polysaccharide.
description	The thermal decomposition of Perilla frutescens polysaccharide was examined by thermogravimetry, differential thermogravimetry, and differential thermal analysis. The results showed that the mass loss of the substance proceeded in three steps. The first stage can be attributed to the expulsion of the water from ambient temperature to 182°C. The second stage corresponded to devolatilization from 182°C to 439°C. The residue slowly degraded in the third stage. The weight loss in air is faster than that in nitrogen, because the oxygen in air accelerated the pyrolytic reaction speed reaction. The heating rate significantly affected the pyrolysis of the sample. Similar activation energies of the degradation process (210-211 kJ mol⁻¹) were obtained by the FWO, KAS, and Popescu techniques. According to Popescu mechanism functions, the possible kinetic model was estimated to be Avrami-Erofeev 20 g(α) = [-ln(1-α)]⁴.
format	article
author	Quancheng Zhou Hongmei Zhang Guihua Sheng
author_facet	Quancheng Zhou Hongmei Zhang Guihua Sheng
author_sort	Quancheng Zhou
title	Pyrolytic and kinetic characteristics of the thermal decomposition of Perilla frutescens polysaccharide.
title_short	Pyrolytic and kinetic characteristics of the thermal decomposition of Perilla frutescens polysaccharide.
title_full	Pyrolytic and kinetic characteristics of the thermal decomposition of Perilla frutescens polysaccharide.
title_fullStr	Pyrolytic and kinetic characteristics of the thermal decomposition of Perilla frutescens polysaccharide.
title_full_unstemmed	Pyrolytic and kinetic characteristics of the thermal decomposition of Perilla frutescens polysaccharide.
title_sort	pyrolytic and kinetic characteristics of the thermal decomposition of perilla frutescens polysaccharide.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/a612eef350294816a6eb38f95fb7e1e3
work_keys_str_mv	AT quanchengzhou pyrolyticandkineticcharacteristicsofthethermaldecompositionofperillafrutescenspolysaccharide AT hongmeizhang pyrolyticandkineticcharacteristicsofthethermaldecompositionofperillafrutescenspolysaccharide AT guihuasheng pyrolyticandkineticcharacteristicsofthethermaldecompositionofperillafrutescenspolysaccharide
_version_	1718422497091649536

Pyrolytic and kinetic characteristics of the thermal decomposition of Perilla frutescens polysaccharide.

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