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 90
... segment comprises several chain links , the segment length itself is , of course , already a statistical ( mean ) quantity . Determination of the shapes and sizes of the molecules in this segment model corresponds completely to the ...
... segment comprises several chain links , the segment length itself is , of course , already a statistical ( mean ) quantity . Determination of the shapes and sizes of the molecules in this segment model corresponds completely to the ...
Page 96
... segment model ( without doubt somewhat hypothetical but still very evident and definitely also powerful ) . i == In the strictly one - dimensional segment model ( Fig . 6.3 ) , the segment vec- tors a ; can only assume two positions ...
... segment model ( without doubt somewhat hypothetical but still very evident and definitely also powerful ) . i == In the strictly one - dimensional segment model ( Fig . 6.3 ) , the segment vec- tors a ; can only assume two positions ...
Page 103
... segment vectors a ;, and their number n remain untouched ) . Corresponding to ( 6.87 ) , the contribu- tion of the deformed molecules to the entropy is then : s ( h ) = k [ ln ; ( n ) – b2 ( λ2 h2 + λ2 h2 + x2 h2 ) ] · - For the mean ...
... segment vectors a ;, and their number n remain untouched ) . Corresponding to ( 6.87 ) , the contribu- tion of the deformed molecules to the entropy is then : s ( h ) = k [ ln ; ( n ) – b2 ( λ2 h2 + λ2 h2 + x2 h2 ) ] · - For the mean ...
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Common terms and phrases
according addition approximation assume becomes bending boundary branch chain molecules coefficients completely components condition const constant contribution corresponding crystal degrees of freedom dependent described determined differential direction effect elastic energy enthalpy entropy equal equation example forces frequency fundamental equation further Gibbs given heat capacity Hence holds homogeneous ideal increasing independent individual interaction internal degrees internal equilibrium internal variable lattice lattice units leads linear macroscopic mass mass points mean mechanical melting mixture modes mole molecular molecules N₁ non-equilibrium obtains partial perturbation phase polymer position possible potential pressure probability processes pure quantities range referred regard relation relaxation respect response functions Sect segment simple so-called solution specific stable stress substances temperature theory thermal thermodynamics tion transition valid variables vector volume waves әт др