| Abstract: | Molecular aggregation of Kapton H (KH) was investigated by small-angle x-ray scattering (SAXS). Superstructure parameters were estimated using a one-dimensional model, taking into account that the SAXS from KH is anisotropic out of the film plane. The results show that KH has a two-phase structure with a volume ratio of the ordered to the less-ordered phase of about 1:1. The β dispersion in dynamic mechanical properties is reasonably ascribed to oscillations of p-phenylene groups in the main chain. |
