Effect of γ-radiation on crystallization of polycaprolactone

Guangming Zhu; Qianyong Xu; Ruifeng Qin; Hongxia Yan; Guozheng Liang

doi:10.1016/j.radphyschem.2004.11.006

Effect of γ-radiation on crystallization of polycaprolactone

Guangming Zhu, Qianyong Xu, Ruifeng Qin, Hongxia Yan, Guozheng Liang

School of Chemistry and Chemical Engineering

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

32 Scopus citations

Abstract

The crystallization behavior of radiation cross-linked poly(ε- caprolactone) (PCL) was studied by DSC at different cooling rates. The crystallization process was analyzed by the Ozawa equation and the Mo-Zhishen method that is developed from combining the Avrami equation and the Ozawa equation. It was concluded that the crystallization of radiation crosslinked PCL is governed by heterogeneous nucleation and single-dimension growth; the crystal fraction and rates of crystallization are related to the radiation dose and degree of cross-linking; the relationship between relative crystallinity and time follows the Ozawa equation: The higher the degree of crosslinking, the less the crystal velocity constant. The activation energy of crystallization for irradiated PCL is between 65 and 54 kJ/mol.

Original language	English
Pages (from-to)	42-50
Number of pages	9
Journal	Radiation Physics and Chemistry
Volume	74
Issue number	1
DOIs	https://doi.org/10.1016/j.radphyschem.2004.11.006
State	Published - Sep 2005

Keywords

Non-isothermal crystallization
Ozawa equation
Poly(ε-caprolactone)
Radiation crosslinking

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10.1016/j.radphyschem.2004.11.006

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title = "Effect of γ-radiation on crystallization of polycaprolactone",

abstract = "The crystallization behavior of radiation cross-linked poly(ε- caprolactone) (PCL) was studied by DSC at different cooling rates. The crystallization process was analyzed by the Ozawa equation and the Mo-Zhishen method that is developed from combining the Avrami equation and the Ozawa equation. It was concluded that the crystallization of radiation crosslinked PCL is governed by heterogeneous nucleation and single-dimension growth; the crystal fraction and rates of crystallization are related to the radiation dose and degree of cross-linking; the relationship between relative crystallinity and time follows the Ozawa equation: The higher the degree of crosslinking, the less the crystal velocity constant. The activation energy of crystallization for irradiated PCL is between 65 and 54 kJ/mol.",

keywords = "Non-isothermal crystallization, Ozawa equation, Poly(ε-caprolactone), Radiation crosslinking",

author = "Guangming Zhu and Qianyong Xu and Ruifeng Qin and Hongxia Yan and Guozheng Liang",

year = "2005",

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doi = "10.1016/j.radphyschem.2004.11.006",

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volume = "74",

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journal = "Radiation Physics and Chemistry",

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TY - JOUR

T1 - Effect of γ-radiation on crystallization of polycaprolactone

AU - Zhu, Guangming

AU - Xu, Qianyong

AU - Qin, Ruifeng

AU - Yan, Hongxia

AU - Liang, Guozheng

PY - 2005/9

Y1 - 2005/9

N2 - The crystallization behavior of radiation cross-linked poly(ε- caprolactone) (PCL) was studied by DSC at different cooling rates. The crystallization process was analyzed by the Ozawa equation and the Mo-Zhishen method that is developed from combining the Avrami equation and the Ozawa equation. It was concluded that the crystallization of radiation crosslinked PCL is governed by heterogeneous nucleation and single-dimension growth; the crystal fraction and rates of crystallization are related to the radiation dose and degree of cross-linking; the relationship between relative crystallinity and time follows the Ozawa equation: The higher the degree of crosslinking, the less the crystal velocity constant. The activation energy of crystallization for irradiated PCL is between 65 and 54 kJ/mol.

AB - The crystallization behavior of radiation cross-linked poly(ε- caprolactone) (PCL) was studied by DSC at different cooling rates. The crystallization process was analyzed by the Ozawa equation and the Mo-Zhishen method that is developed from combining the Avrami equation and the Ozawa equation. It was concluded that the crystallization of radiation crosslinked PCL is governed by heterogeneous nucleation and single-dimension growth; the crystal fraction and rates of crystallization are related to the radiation dose and degree of cross-linking; the relationship between relative crystallinity and time follows the Ozawa equation: The higher the degree of crosslinking, the less the crystal velocity constant. The activation energy of crystallization for irradiated PCL is between 65 and 54 kJ/mol.

KW - Non-isothermal crystallization

KW - Ozawa equation

KW - Poly(ε-caprolactone)

KW - Radiation crosslinking

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U2 - 10.1016/j.radphyschem.2004.11.006

DO - 10.1016/j.radphyschem.2004.11.006

M3 - 文章

AN - SCOPUS:22144457382

SN - 0969-806X

VL - 74

SP - 42

EP - 50

JO - Radiation Physics and Chemistry

JF - Radiation Physics and Chemistry

IS - 1

ER -

Effect of γ-radiation on crystallization of polycaprolactone

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Keywords

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