Desorption of fullerene C60 from a mixture with a copolymer of trifluorochloroethylene and vinylidene fluoride

Thermal desorption mass spectrometry has been used to study the desorption of fullerene C₆₀ molecules from a mixture with a copolymer of trifluorochloroethylene and vinylidene fluoride. The temperature range of the C₆₀ yield from the copolymer mixture is substantially lower (approximately 100°C lower) than the temperature range for the sublimation of pure C₆₀ molecules. The temperature range of the C₆₀ yield from the copolymer mixture is the same as that for the desorption of HCl and HF formed as a result of copolymer cross linking reactions. The desorption of C₆₀ from the copolymer mixture is a two-stage process correlated with the stages of HCL and HF formation for which the temperatures at the maximum desorption rates differ. The results suggest that the copolymer cross-linking processes and the desorption of C₆₀ molecules are interrelated. Pis’ma Zh. Tekh. Fiz. 23, 20–26 (December 26, 1997)