Chinese Journal of Magnetic Resonance ›› 2000, Vol. 17 ›› Issue (1): 69-72.

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ESR AND DSC STUDIES OF HIGH-SPEED ELECTRON IRRADIATED F-40

XING Dali1, ZHAO Xiangzhen2, WANG Shoutai2   

  1. 1 Dongguan Institute of Technology, Dongguan 523000;
    2 Polymeric Materials Research Institute of Shanghai Jiaotong University, Shanghai 200240
  • Received:1999-09-08 Revised:1999-10-18 Published:2000-02-05 Online:2018-01-10

Abstract: The-mid-chain and end-chain peroxyl radicals are trapped in the samples irradiated in air at room temperature. They decay slowly at room temperature. It was indicated by means of DSC technique that melting temperature Tm of irradiated F-40 decreases with the increasing radiation dose. This fact was interpreted in terms of the general model of lamellar crystallites.

Key words: Radiation crosslinked F-40, Radical decay, ESR, DSC