tructural changes in γ-ray irradiated polytetrafluoroethylene(PTFE) were studied by synchrotron radiation X-ray scattering technique and differential scanning calorimetry.Changes in particle size
crystallinity
thickness of transition layer parameter and compactness of the irradiated PTFE were analyzed.The results show that because of the radiation degradation of PTFE
the crystalline enthalpy
melting point and crystallinity increased with the dose
while the particle size decreased and the inner structure became more compact with increasing doses.The irradiated PTFE has self-similarity.