A Molecular Theory of the Thermal Transitions of Polymers. I.

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概要

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• A molecular theory is developed in order to elucidate the nature of melting and glass transition of polymers. Rotational oscillations of chain units around chain axis are considered. It is assumed that the units of trans linkage have a sinusoidal interchain potential field in a hexagonal lattice but for gauche the potential field has not such sinusoidal form. The lattice energy is calculated by summing up the Lennard-Jones type pair interactions between units. A critical temperature for the transition between uniform and non-uniform rotational orientations of units is obtained for crystalline or glassy state on the basis of molecular field approximation. Melting temperature (T_m) and glass temperature (T_g) can be predicted from it and the empirically known correlation between T_m and T_g is well explained. The results are in good agreement with the experimental data on polyethylene.

• 社団法人日本物理学会の論文
• 1972-04-05

著者

• Ishinabe Takao

  Faculty Of Engineering Tokyo Institute Of Technology

関連論文

• Thermodynamic Stability and Melting of Crystals in a Bulk Polymer
• Application of the Coherent Anomaly Method to 1/d Expansions for a Self-Interacting Self-Avoiding Lattice Walk(New Developments in Statistical Physics Similarities in Diversities,YITP Workshop)
• A Molecular Theory of the Thermal Transitions of Polymers. I.
• CRITICAL EXPONENTS OF SAW AT THE θ POINT IN TWO DIMENSIONS(Session I : Cross-Disciplinary Physics, The 1st Tohwa University International Meeting on Statistical Physics Theories, Experiments and Computer Simulations)
• Phase Transition in Crystals of Semiflexible Long-Chain Molecules. : I
• Phase Transition in Crystals of Semiflexible Long-Chain Molecules.II
• A Molecular Theory of the Thermal Transitions of Polymers. II.
• Theory of the Rotational Phase Transition in Normal Paraffine Crystals

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