Non-Isothermal Crystallization Kinetics of Poly(ethylene glycol) and Poly(ethylene glycol)-B-Poly(ε-caprolactone) by Flash DSC Analysis

The non-isothermal crystallization behaviors of poly (ethylene glycol) (PEG) and poly (ethylene glycol)-b-poly(ε-caprolactone) (PEG-PCL) were investigated through a commercially available chip-calorimeter Flash DSC2+. The non-isothermal crystallization data under different cooling rates were analyze...

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Autores principales:	Xiaodong Li, Meishuai Zou, Lisha Lei, Longhao Xi
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	PEG-PCL non-isothermal crystallization flash differential scanning calorimeter Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/874dfbba9fea423a93bbf1e996065378
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spelling	oai:doaj.org-article:874dfbba9fea423a93bbf1e9960653782021-11-11T18:44:39ZNon-Isothermal Crystallization Kinetics of Poly(ethylene glycol) and Poly(ethylene glycol)-B-Poly(ε-caprolactone) by Flash DSC Analysis10.3390/polym132137132073-4360https://doaj.org/article/874dfbba9fea423a93bbf1e9960653782021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/21/3713https://doaj.org/toc/2073-4360The non-isothermal crystallization behaviors of poly (ethylene glycol) (PEG) and poly (ethylene glycol)-b-poly(ε-caprolactone) (PEG-PCL) were investigated through a commercially available chip-calorimeter Flash DSC2+. The non-isothermal crystallization data under different cooling rates were analyzed by the Ozawa model, modified Avrami model, and Mo model. The results of the non-isothermal crystallization showed that the PCL block crystallized first, followed by the crystallization of the PEG block when the cooling rate was 50–200 K/s. However, only the PEG block can crystallize when the cooling rate is 300–600 K/s. The crystallization of PEG-PCL is completely inhibited when the cooling rate is 1000 K/s. The modified Avrami and Ozawa models were found to describe the non-isothermal crystallization processes well. The growth methods of PEG and PEG-PCL are both three-dimensional spherulitic growth. The Mo model shows that the crystallization rate of PEG is greater than that of PEG-PCL.Xiaodong LiMeishuai ZouLisha LeiLonghao XiMDPI AGarticlePEG-PCLnon-isothermal crystallizationflash differential scanning calorimeterOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3713, p 3713 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	PEG-PCL non-isothermal crystallization flash differential scanning calorimeter Organic chemistry QD241-441
spellingShingle	PEG-PCL non-isothermal crystallization flash differential scanning calorimeter Organic chemistry QD241-441 Xiaodong Li Meishuai Zou Lisha Lei Longhao Xi Non-Isothermal Crystallization Kinetics of Poly(ethylene glycol) and Poly(ethylene glycol)-B-Poly(ε-caprolactone) by Flash DSC Analysis
description	The non-isothermal crystallization behaviors of poly (ethylene glycol) (PEG) and poly (ethylene glycol)-b-poly(ε-caprolactone) (PEG-PCL) were investigated through a commercially available chip-calorimeter Flash DSC2+. The non-isothermal crystallization data under different cooling rates were analyzed by the Ozawa model, modified Avrami model, and Mo model. The results of the non-isothermal crystallization showed that the PCL block crystallized first, followed by the crystallization of the PEG block when the cooling rate was 50–200 K/s. However, only the PEG block can crystallize when the cooling rate is 300–600 K/s. The crystallization of PEG-PCL is completely inhibited when the cooling rate is 1000 K/s. The modified Avrami and Ozawa models were found to describe the non-isothermal crystallization processes well. The growth methods of PEG and PEG-PCL are both three-dimensional spherulitic growth. The Mo model shows that the crystallization rate of PEG is greater than that of PEG-PCL.
format	article
author	Xiaodong Li Meishuai Zou Lisha Lei Longhao Xi
author_facet	Xiaodong Li Meishuai Zou Lisha Lei Longhao Xi
author_sort	Xiaodong Li
title	Non-Isothermal Crystallization Kinetics of Poly(ethylene glycol) and Poly(ethylene glycol)-B-Poly(ε-caprolactone) by Flash DSC Analysis
title_short	Non-Isothermal Crystallization Kinetics of Poly(ethylene glycol) and Poly(ethylene glycol)-B-Poly(ε-caprolactone) by Flash DSC Analysis
title_full	Non-Isothermal Crystallization Kinetics of Poly(ethylene glycol) and Poly(ethylene glycol)-B-Poly(ε-caprolactone) by Flash DSC Analysis
title_fullStr	Non-Isothermal Crystallization Kinetics of Poly(ethylene glycol) and Poly(ethylene glycol)-B-Poly(ε-caprolactone) by Flash DSC Analysis
title_full_unstemmed	Non-Isothermal Crystallization Kinetics of Poly(ethylene glycol) and Poly(ethylene glycol)-B-Poly(ε-caprolactone) by Flash DSC Analysis
title_sort	non-isothermal crystallization kinetics of poly(ethylene glycol) and poly(ethylene glycol)-b-poly(ε-caprolactone) by flash dsc analysis
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/874dfbba9fea423a93bbf1e996065378
work_keys_str_mv	AT xiaodongli nonisothermalcrystallizationkineticsofpolyethyleneglycolandpolyethyleneglycolbpolyecaprolactonebyflashdscanalysis AT meishuaizou nonisothermalcrystallizationkineticsofpolyethyleneglycolandpolyethyleneglycolbpolyecaprolactonebyflashdscanalysis AT lishalei nonisothermalcrystallizationkineticsofpolyethyleneglycolandpolyethyleneglycolbpolyecaprolactonebyflashdscanalysis AT longhaoxi nonisothermalcrystallizationkineticsofpolyethyleneglycolandpolyethyleneglycolbpolyecaprolactonebyflashdscanalysis
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Non-Isothermal Crystallization Kinetics of Poly(ethylene glycol) and Poly(ethylene glycol)-B-Poly(ε-caprolactone) by Flash DSC Analysis

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