Citation:
Wang Daike, Chen Jie. ESR INVESTIGATION OF PLASMA POLYMERIZED FILM OF HEXAFLUOROPROPENE[J]. Chinese Journal of Applied Chemistry,
;1989, 6(5): 89-92.
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The free radical concentration of plasma polymerized hexafluoropropene (PPHFP) was found to be 9.97×1019 spins/gram using CuSO4·5H2O single-crystal as a standard. The half-life of the radical in Ar gas was near half a year at room temperature.There was one radical in every two PPHFP chains. The activation energy and rate constants of the radical deterioration at different temperature have been calculated. Twenty hyperfine lines in ESR spectra were recorded for gascous products during plasma polymerization. The radicals of gascous products have similar stability.
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Keywords:
- ESR spectra,
- Plasma polymer,
- Hexafluoropropene
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