Abstract
The sensitivity of thermogasdynamically dispersed polytetrafluoroethylene to mechanical action was studied by IR and ESR spectroscopy. It is shown that exposure of sample to a pressure of 10 000 kg/cm2 and mechanical impact does not lead to transition from a helical to a planar zigzag conformation but increases the amorphous properties and the number of defects of the sample structure. It is assumed that the defects are due to the appearance of terminal =CF3 groups and =CF3 groups in the side chain or deformation of chain regions with conjugated bonds.
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