CHARACTERIZATION OF γ-IRRADIATED CRYSTALLINE POLYMERS Ⅱ ISOTHERMAL CRYSTALLIZATION KINETICS OF γ-RADIATION INDUCED CROSSLINKED POLYAMIDE 1010

FENG Jinhua; ZHANG Lihua; CHEN Donglin

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CHARACTERIZATION OF γ-IRRADIATED CRYSTALLINE POLYMERS Ⅱ ISOTHERMAL CRYSTALLIZATION KINETICS OF γ-RADIATION INDUCED CROSSLINKED POLYAMIDE 1010

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- CHARACTERIZATION OF γ-IRRADIATED CRYSTALLINE POLYMERS Ⅱ ISOTHERMAL CRYSTALLIZATION KINETICS OF γ-RADIATION INDUCED CROSSLINKED POLYAMIDE 1010
- Vol. 7, Issue 1, Pages: 54-65(1989)
- Affiliations：
  
  1. **
  2.   Academia Sinica
  3.   Academia Sinica Changchun Wuhan Institute of Chemical Technology Wuhan.
  4.   Changchun
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：20 March 1989
- Accepted：
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[1]冯金华,张利华,陈东霖.CHARACTERIZATION OF γ-IRRADIATED CRYSTALLINE POLYMERS Ⅱ ISOTHERMAL CRYSTALLIZATION KINETICS OF γ-RADIATION INDUCED CROSSLINKED POLYAMIDE 1010[J].Chinese Journal of Polymer Science,1989,{4}(01):54-65.

FENG Jinhua, ZHANG Lihua, CHEN Donglin. CHARACTERIZATION OF γ-IRRADIATED CRYSTALLINE POLYMERS Ⅱ ISOTHERMAL CRYSTALLIZATION KINETICS OF γ-RADIATION INDUCED CROSSLINKED POLYAMIDE 1010[J]. 1989, 7(1): 54-65.
[1]冯金华,张利华,陈东霖.CHARACTERIZATION OF γ-IRRADIATED CRYSTALLINE POLYMERS Ⅱ ISOTHERMAL CRYSTALLIZATION KINETICS OF γ-RADIATION INDUCED CROSSLINKED POLYAMIDE 1010[J].Chinese Journal of Polymer Science,1989,{4}(01):54-65. DOI：

FENG Jinhua, ZHANG Lihua, CHEN Donglin. CHARACTERIZATION OF γ-IRRADIATED CRYSTALLINE POLYMERS Ⅱ ISOTHERMAL CRYSTALLIZATION KINETICS OF γ-RADIATION INDUCED CROSSLINKED POLYAMIDE 1010[J]. 1989, 7(1): 54-65. DOI：

摘要

正

Polyamide 1010 is a γ-radiation crosslinkable polymer. After irradiation

it is possible to raise its service temperature up to 240℃. Network formation greatly changes the crystallization behaviour of the polymer. In the present work

DSC was used to examine its isothermal crystallization kinetics. It is found that in addition to the necessity of more undercooling and the lowering of crystallization rate

the primary crystallization stage of the irradiated polymer is shortened. This effect is more evident with increasing radiation dose and content of enhanced difunctionai erosslinking agent. However

the crystallization mechanism of the primary stage is not changed as evidenced by the constancy of Avrami exponent. The lamella end surface free energy σ

calculated according to Hoffman’s equation is very sensitive to γ-radiation. It increases abruptly in 2—3 fold even though the radiation dose is not high enough. The origin of this phenomenon may be accounted for in terms of network structure of the polymer.

Abstract

Polyamide 1010 is a γ-radiation crosslinkable polymer. After irradiation

it is possible to raise its service temperature up to 240℃ . Network formation greatly changes the crystallization behaviour of the polymer. In the present work

DSC was used to examine its isothermal crystallization kinetics. It is found that in addition to the necessity of more undercooling and the lowering of crystallization rate

the primary crystallization stage of the irradiated polymer is shortened. This effect is more evident with increasing radiation dose and content of enhanced difunctionai erosslinking agent. However

the crystallization mechanism of the primary stage is not changed as evidenced by the constancy of Avrami exponent. The lamella end surface free energy σ

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