| CHARACTERIZATION OF γ-IRRADIATED CRYSTALLINE POLYMERS Ⅱ ISOTHERMAL CRYSTALLIZATION KINETICS OF γ-RADIATION INDUCED CROSSLINKED POLYAMIDE 1010 |
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| 引用本文： | 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].高分子科学,1989,0(1):54-65. |
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| 作者姓名： | 冯金华 张利华 陈东霖 |
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| 作者单位： | Changchun Institute of Applied Chemistry，Academia Sinica，Changchun Institute of Applied Chemistry，Academia Sinica，Changchun Institute of Applied Chemistry，Academia Sinica Changchun Wuhan Institute of Chemical Technology Wuhan.，Changchun，Changchun |
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| 摘 要： | 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_e 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.
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| 关 键 词： | γ-Irradiation Crosslinking Polyamide 1010 Isothermal crystallization |
| 收稿时间： | 1988-05-11 |
CHARACTERIZATION OF γ-IRRADIATED CRYSTALLINE POLYMERS Ⅱ ISOTHERMAL CRYSTALLIZATION KINETICS OF γ-RADIATION INDUCED CROSSLINKED POLYAMIDE 1010 |
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| FENG Jinhua,ZHANG Lihua,CHEN Donglin.CHARACTERIZATION OF γ-IRRADIATED CRYSTALLINE POLYMERS Ⅱ ISOTHERMAL CRYSTALLIZATION KINETICS OF γ-RADIATION INDUCED CROSSLINKED POLYAMIDE 1010[J].Chinese Journal of Polymer Science,1989,0(1):54-65. |
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| Authors: | FENG Jinhua ZHANG Lihua CHEN Donglin |
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| Institution: | Changchun Institute of Applied Chemistry; Academia Sinica; Academia Sinica Changchun Wuhan Institute of Chemical Technology Wuhan.; Changchun |
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| 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 increasing radiation dose and content of enhanced difunctional crosslinking agent.However,the crystallization mechanism of the orimary stage is not changed as evidenced by the constancy of Avrami exponent.The lamella end surface free energy σecalculated 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. |
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