TY - JFULL AU - Levan Nadareishvili and Roland Bakuradze and Barbara Kilosanidze and Nona Topuridze and Liana Sharashidze and Ineza Pavlenishvili PY - 2015/3/ TI - Graded Orientation of the Linear Polymers T2 - International Journal of Chemical and Molecular Engineering SP - 250 EP - 256 VL - 9 SN - 1307-6892 UR - https://publications.waset.org/pdf/10000468 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 98, 2015 N2 - Some regularities of formation of a new structural state of the thermoplastic polymers - gradually oriented (stretched) state (GOS) are discussed. Transition into GOS is realized by the graded oriented stretching - by action of inhomogeneous mechanical field on the isotropic linear polymers or by zone stretching that is implemented on a standard tensile-testing machine with using a specially designed zone stretching device (ZSD). Both technical approaches (especially zone stretching method) allows to manage the such quantitative parameters of gradually oriented polymers as a range of change in relative elongation/orientation degree, length of this change and profile (linear, hyperbolic, parabolic, logarithmic, etc.). The possibility of obtaining functionally graded materials (FGMs) by graded orientation method is briefly discussed. Uniaxial graded stretching method should be considered as an effective technological solution to create polymer materials with a predetermined gradient of physical properties. ER -