Radiation effects of poly(vinylidene fluoride) (PVDF) (I) |
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| Authors: | Hongbing Song Liqing Xie Jun Cheng Haiyan Wang |
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| Institution: | (1) Institute of Nuclear Physics and Chemistry, Chinese Academy of Engineering Physics, 610003 Chengdu, China;(2) Institute of Low Energy Nuclear Physics, Beijing Normal University, 100875 Beijing, China;(3) Department of Plastics Engineering, Sichuan Union University, 610061 Chengdu, China |
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| Abstract: | The relationship between the crystallinity of poly (vinylidene fluoride) (PVDF) and electron radiation effects is studied
with differential scanning calorimeter and X-ray diffraction. The form of crystal of PVDF is not changed. In the low dose
zone (lower than 400 kGy), the crystallinity of PVDF increases slightly with the increase of absorbed dose, and then decreases
slowly, whereas the decrease of the crystallinity is accelerated with the increase of the absorbed dose in high dose zone.
Gel and Sol properties of irradiated samples of PVDF are also studied with extraction of N, N-dimethyl formamide. In a low
dose range, it fits Charlesby-Pinner formula very well; however, with the increase of the dose, it begins to deviate from
this formula because of the obstruction of the crystalline region of PVDF. |
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| Keywords: | poly(vinylidene fluoride) electron irradiation crystallinity Charlesby-Pinner formula |
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