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National Repository of Grey Literature 5 records found  Search took 0.00 seconds. 
Equations of state for polymers – influence of initial reduction parameters estimate on calculation result
 Jůza, Josef
When calculating reduction parameters for equation of state for polymers from pressure – volume - temperature data, the way of calculation of their initial value has some influence discussed in the lecture.
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Polymer surface tension and properties of state
 Jůza, Josef
This contribution presents transformation of some well-known equations expressing surface tension using state properties and other parameters to express the ratio of the surface tension to the drop density, which is more reliable and available even if density is unknown.
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The study of crystallization and melting of polymers by temperature modulated DSC
 Sikora, Antonín ; Kratochvíl, Jaroslav
Melting behaviour of poly(N-methyldodekaco lactam) was studied by the temperature modulated DSC. Non-linear behaviour observed is given by melting kinetics and strong temperature dependence of c.sub.p./sub. in the melting region.
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Calculations of phase equilibria for polymer blends
 Živný, Antonín
Methods of calculations of phase equilibria in polymer blends with specific interactions are analyzed on the basis of the quasichemical Barker theory. Particularly, numerical solution of the equation of the spinodal and subsequent construction of curves of phase coexistence in these systems are performed.
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Kinetics of polymer crystallization
 Kratochvíl, Jaroslav ; Sikora, Antonín
Kinetics of three steps of complex crystallization of poly(N-methyldodecano-12-lactam) were studied by DCS using an Avrami model. Mechanism of respective isothermal steps involves mixed heterogeneous/homogeneous nucleation (primary melt crystallization) or missing nucleation phase (additional crystallization and recrystallization) followed by two-dimensional growth.
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