Structural models for crystallographic disorder in poly(tetrafluoroethylene)

Some structurally disordered models for poly(tetrafluoroethylene) were elaborated and the corresponding calculated X‐ray diffraction patterns compared with experimental patterns. This and differential scanning calorimetry results suggest some differences between the virgin powder and a sintered polycrystalline plate of poly(tetrafluoroethylene). These differences may be related to the crystal phase transitions that occur in a range of temperatures close to room temperature.