The experimental result shows that

when crystallizing temperature Tc≤196℃

the crystallinity and crystalline size perpendicular to the reflection plane (100) of isothermal crystallized nylon 1010 from melt are increased with the raising of Tc

but the relative diffraction strength of plane parallel to hydrogen-boned sheets (HB) is decreased. When Tc>196℃

the relations are turned back. The quicker rate of crystallization makes the growth of molecular chain on the plane perpendicular to HB easier

but more difficult for the plane parallel to HB.