“…When these liner polymers are left in an oven at a temperature above their melting point of > 250°C, chain extension of the main phenyl groups caused by melting leads to molecular orientation, which is reflected in the crystallization of the polymers during cooling from the melting temperature to a lower temperature [2][3][4]. Such crystallization behavior of the polyaryls gives them specific desirable characteristics, such as high temperature stability, high radiation, chemical, and hydrothermal resistance, and good mechanical and dielectric properties.…”