“…Generally, it is believed that the deformation of the amorphous phase in a rubber-like state occurs according to three basic mechanisms [3,6]: interlamellar slips (shear) [17e19], interlamellar separation (change of distance between the adjacent lamellae) [17,19e22] and rotation of lamellae (rotation of stacks of lamellae) [19,23]. Activation of the above mentioned mechanisms of the amorphous phase deformation occur in different zones of spherulites, depending on the direction of applied tensile stress.…”