Thermophysics of Polymers I: Theoryhere, Herbert Baur provides a simple description of the theory of thermophysics of polymers. In order to illustrate the theoretical skeleton, he only treats the simple, easily comprehensible problems of polymer physics, yet, in detail. The main points covered are: thermally excited conformation isomery of polymers; phonon gas of ideal polymer crystals; the dissipative thermo-mechanical behaviour of polymers, new aspects of viscoelastic behavior, glass transistion, and crystallization. |
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Page 88
... bonds ( valence angles ) is about 110 ° . As the single C - C - bond ( in contrast to the C = C- double bond ) is ... gauche - bonds g or ğ , respectively . These bond types enable the molecule to produce a multitude of relatively stable ...
... bonds ( valence angles ) is about 110 ° . As the single C - C - bond ( in contrast to the C = C- double bond ) is ... gauche - bonds g or ğ , respectively . These bond types enable the molecule to produce a multitude of relatively stable ...
Page 90
... gauche - bond ; Aɛg = Ɛg – ε ) . For the probability of finding a gauche - bond , one obtains P g = ng n = 1- P1 = = 2 eağ / kT + 2 t g ( 6.46 ) If there is no energetic difference between the trans- and gauche - bonds , i . e . , Aεg ...
... gauche - bond ; Aɛg = Ɛg – ε ) . For the probability of finding a gauche - bond , one obtains P g = ng n = 1- P1 = = 2 eağ / kT + 2 t g ( 6.46 ) If there is no energetic difference between the trans- and gauche - bonds , i . e . , Aεg ...
Page 104
... gauche - bond in an ensemble of densely packed polymer molecules basically requires a cooperative process which can ... bonds . If trans- and gauche - bonds are separated by a given energy gap Aɛg , this leads to the problem of the so ...
... gauche - bond in an ensemble of densely packed polymer molecules basically requires a cooperative process which can ... bonds . If trans- and gauche - bonds are separated by a given energy gap Aɛg , this leads to the problem of the so ...
Contents
Equilibrium and Stability Conditions | 20 |
Homogeneous Mixtures | 27 |
2 | 33 |
Copyright | |
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Common terms and phrases
according arrested equilibrium bending modes branch Bravais lattice Brillouin zone chain molecules chemical potentials coefficient of thermal conformational isomers const constant corresponding crystalline curve Debye Debye relaxation degrees of freedom density dependent differential dispersion relation elastic enthalpy entropy equilibrium position equilibrium thermodynamics extensive quantities free energy free enthalpy frequency G-representation gauche-bonds Gibbs function Gibbs fundamental equation group velocity heat capacity Hence homogeneous interaction intermolecular internal energy internal equilibrium internal variable lamella lattice units leads linear chain liquid M₁ mass points mechanical melting mixture modulus mole number molecular N₁ N₂ non-equilibrium obtains perturbation phase phonons polymer crystal pressure processes quantities quasi-elastic relaxation relevant internal degrees respect response functions Sect segment so-called stretching modes T₁ temperature thermal expansion tion v₁ valid vector vibrations volume wave number x₁ Σ Σ ат др эт