| Abstract: | The fundamentals of "macromolecular" mechanics are outlined and approximate quantitative relations are established between the parameters of the mechanical properties of elastically stretched macromolecules and the characteristics of the mechanical properties of polymers determined at significant uniaxial deformations. This new scientific approach is based on the assumption of "framework connectivity." The conditions of internally compensated mechanical equilibrium at the molecular level are investigated. Several variants of simple geometric models of the "framework" reinforcing the stretched polymer are proposed. A system of quantities characterizing the mechanical properties of the polymer and the "framework" is developed. According to the theory, the stress in the "framework" macromolecules, considered as a molecular elastic continuum, substantially exceeds the stress in the stretched polymer. The nature of the internal stresses and elastic aftereffect in glassy crystalline polymers subjected to significant deformation is reinterpreted.Moscow. Translated from Mekhanika Polimerov, No. 2, pp. 221–231, March–April, 1971. |
