Abstract

Monoelemental polymers with various chemical constitutions and different spatial structures (linear Te n , Se n , and S n ; planar graphite C n , black phosphorus P n , As n , Sb n , and Bi n ; and chemically bonded three-dimensional diamond C n , B n , Si n , and Ge n ) were considered and categorized as a class of covalent macromolecular compounds. Quantitative expressions relating the thermal (melting point, thermal expansion coefficient, heat conductivity) and elastic (microhardness, bulk compression modulus of elasticity) properties of polymers to the energy of intra-and intermolecular interactions and the equilibrium length of chemical bonds in the crystalline and glassy states are given. A numerical correlation between the spatial structure of polymers and their thermal and elastic properties was obtained. The hypothetical melting point of diamond at normal pressure was calculated as T f = 3155 K.

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