Non-isothermal crystallization kinetics of poly(Ethylene glycol) and poly(ethylene glycol)-b-poly(ε-caprolactone) by flash dsc analysis

Xiaodong Li; Meishuai Zou; Lisha Lei; Longhao Xi

doi:10.3390/polym13213713

Non-isothermal crystallization kinetics of poly(Ethylene glycol) and poly(ethylene glycol)-b-poly(ε-caprolactone) by flash dsc analysis

Xiaodong Li^*, Meishuai Zou^*, Lisha Lei, Longhao Xi

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

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 50–100 K/s. However, only the PEG block can crystallize when the cooling rate is 200–600 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.

Original language	English
Article number	3713
Journal	Polymers
Volume	13
Issue number	21
DOIs	https://doi.org/10.3390/polym13213713
Publication status	Published - 1 Nov 2021

Keywords

Flash differential scanning calorimeter
Non-isothermal crystallization
PEG-PCL

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title = "Non-isothermal crystallization kinetics of poly(Ethylene glycol) and poly(ethylene glycol)-b-poly(ε-caprolactone) by flash dsc analysis",

abstract = "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 50–100 K/s. However, only the PEG block can crystallize when the cooling rate is 200–600 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.",

keywords = "Flash differential scanning calorimeter, Non-isothermal crystallization, PEG-PCL",

author = "Xiaodong Li and Meishuai Zou and Lisha Lei and Longhao Xi",

note = "Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2021",

month = nov,

day = "1",

doi = "10.3390/polym13213713",

language = "English",

volume = "13",

journal = "Polymers",

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T1 - Non-isothermal crystallization kinetics of poly(Ethylene glycol) and poly(ethylene glycol)-b-poly(ε-caprolactone) by flash dsc analysis

AU - Li, Xiaodong

AU - Zou, Meishuai

AU - Lei, Lisha

AU - Xi, Longhao

PY - 2021/11/1

Y1 - 2021/11/1

N2 - 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 50–100 K/s. However, only the PEG block can crystallize when the cooling rate is 200–600 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.

AB - 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 50–100 K/s. However, only the PEG block can crystallize when the cooling rate is 200–600 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.

KW - Flash differential scanning calorimeter

KW - Non-isothermal crystallization

KW - PEG-PCL

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DO - 10.3390/polym13213713

M3 - Article

AN - SCOPUS:85118480581

SN - 2073-4360

VL - 13

JO - Polymers

JF - Polymers

IS - 21

M1 - 3713

ER -

Non-isothermal crystallization kinetics of poly(Ethylene glycol) and poly(ethylene glycol)-b-poly(ε-caprolactone) by flash dsc analysis

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Keywords

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