Thermal Performances and Fluidity of Biodegradable Poly(L-lactic acid) Filled with N, N'-Oxalyl Bis(piperonylic acid) Dihydrazide as a Nucleating Agent

N, N'-oxalyl bis(piperonylic acid) dihydrazide (PAOD) was obtained through the amination of piperonylic acid chloride and its structure was characterized by Fourier transform infrared spectrometer and nuclear magnetic resonance. Melting blend technology was used to prepare the modified poly(L-l...

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Autores principales:	Lisha ZHAO, Yanhua CAI
Formato:	article
Lenguaje:	EN
Publicado:	Kaunas University of Technology 2021
Materias:	plla nucleating agent thermal performance piperonylic acid Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/60fe1142ecfb4eba818f3a5997e9fa71
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spelling	oai:doaj.org-article:60fe1142ecfb4eba818f3a5997e9fa712021-11-20T07:34:17ZThermal Performances and Fluidity of Biodegradable Poly(L-lactic acid) Filled with N, N'-Oxalyl Bis(piperonylic acid) Dihydrazide as a Nucleating Agent1392-13202029-728910.5755/j02.ms.25139https://doaj.org/article/60fe1142ecfb4eba818f3a5997e9fa712021-11-01T00:00:00Zhttps://matsc.ktu.lt/index.php/MatSc/article/view/25139https://doaj.org/toc/1392-1320https://doaj.org/toc/2029-7289N, N'-oxalyl bis(piperonylic acid) dihydrazide (PAOD) was obtained through the amination of piperonylic acid chloride and its structure was characterized by Fourier transform infrared spectrometer and nuclear magnetic resonance. Melting blend technology was used to prepare the modified poly(L-lactic acid) (PLLA) containing the various loading PAOD as a new organic nucleating agent. The thermal performances including crystallization, melting behavior and thermal decomposition process, as well as the fluidity of PAOD-nucleated PLLA were investigated via a series of tests. The DSC results showed that, in comparison to DSC curve of the virgin PLLA, the DSC curves of all PLLA/PAOD appeared the sharp melt-crystallization peak, and a higher PAOD concentration caused the melt-crystallization to occur in the higher temperature region and reduced the negative effect of the high cooling rate on the melt-crystallization process. However, with increasing of PAOD concentration, the cold-crystallization enthalpy decreased from 24.4 J/g to 16.7 J/g. The melting peak after melt-crystallization depended on the heating rate and the PAOD concentration; and the double melting peaks appeared after isothermal crystallization in low temperature region was thought to be due to the melting-recrystallization. The addition of PAOD decreased the onset decomposition temperature of PLLA, but the onset decomposition temperature was determined by the PAOD concentration and the intermolecular interaction of PLLA and PAOD. Additionally, the PAOD could considerably improve the fluidity of PLLA.Lisha ZHAOYanhua CAIKaunas University of Technologyarticlepllanucleating agentthermal performancepiperonylic acidMining engineering. MetallurgyTN1-997ENMedžiagotyra, Vol 27, Iss 4, Pp 458-465 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	plla nucleating agent thermal performance piperonylic acid Mining engineering. Metallurgy TN1-997
spellingShingle	plla nucleating agent thermal performance piperonylic acid Mining engineering. Metallurgy TN1-997 Lisha ZHAO Yanhua CAI Thermal Performances and Fluidity of Biodegradable Poly(L-lactic acid) Filled with N, N'-Oxalyl Bis(piperonylic acid) Dihydrazide as a Nucleating Agent
description	N, N'-oxalyl bis(piperonylic acid) dihydrazide (PAOD) was obtained through the amination of piperonylic acid chloride and its structure was characterized by Fourier transform infrared spectrometer and nuclear magnetic resonance. Melting blend technology was used to prepare the modified poly(L-lactic acid) (PLLA) containing the various loading PAOD as a new organic nucleating agent. The thermal performances including crystallization, melting behavior and thermal decomposition process, as well as the fluidity of PAOD-nucleated PLLA were investigated via a series of tests. The DSC results showed that, in comparison to DSC curve of the virgin PLLA, the DSC curves of all PLLA/PAOD appeared the sharp melt-crystallization peak, and a higher PAOD concentration caused the melt-crystallization to occur in the higher temperature region and reduced the negative effect of the high cooling rate on the melt-crystallization process. However, with increasing of PAOD concentration, the cold-crystallization enthalpy decreased from 24.4 J/g to 16.7 J/g. The melting peak after melt-crystallization depended on the heating rate and the PAOD concentration; and the double melting peaks appeared after isothermal crystallization in low temperature region was thought to be due to the melting-recrystallization. The addition of PAOD decreased the onset decomposition temperature of PLLA, but the onset decomposition temperature was determined by the PAOD concentration and the intermolecular interaction of PLLA and PAOD. Additionally, the PAOD could considerably improve the fluidity of PLLA.
format	article
author	Lisha ZHAO Yanhua CAI
author_facet	Lisha ZHAO Yanhua CAI
author_sort	Lisha ZHAO
title	Thermal Performances and Fluidity of Biodegradable Poly(L-lactic acid) Filled with N, N'-Oxalyl Bis(piperonylic acid) Dihydrazide as a Nucleating Agent
title_short	Thermal Performances and Fluidity of Biodegradable Poly(L-lactic acid) Filled with N, N'-Oxalyl Bis(piperonylic acid) Dihydrazide as a Nucleating Agent
title_full	Thermal Performances and Fluidity of Biodegradable Poly(L-lactic acid) Filled with N, N'-Oxalyl Bis(piperonylic acid) Dihydrazide as a Nucleating Agent
title_fullStr	Thermal Performances and Fluidity of Biodegradable Poly(L-lactic acid) Filled with N, N'-Oxalyl Bis(piperonylic acid) Dihydrazide as a Nucleating Agent
title_full_unstemmed	Thermal Performances and Fluidity of Biodegradable Poly(L-lactic acid) Filled with N, N'-Oxalyl Bis(piperonylic acid) Dihydrazide as a Nucleating Agent
title_sort	thermal performances and fluidity of biodegradable poly(l-lactic acid) filled with n, n'-oxalyl bis(piperonylic acid) dihydrazide as a nucleating agent
publisher	Kaunas University of Technology
publishDate	2021
url	https://doaj.org/article/60fe1142ecfb4eba818f3a5997e9fa71
work_keys_str_mv	AT lishazhao thermalperformancesandfluidityofbiodegradablepolyllacticacidfilledwithnnoxalylbispiperonylicaciddihydrazideasanucleatingagent AT yanhuacai thermalperformancesandfluidityofbiodegradablepolyllacticacidfilledwithnnoxalylbispiperonylicaciddihydrazideasanucleatingagent
_version_	1718419484871491584

Thermal Performances and Fluidity of Biodegradable Poly(L-lactic acid) Filled with N, N'-Oxalyl Bis(piperonylic acid) Dihydrazide as a Nucleating Agent

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