Ceiling Temperature during Reversible Polymerization

The total Gibbs free energy of a closed system at constant T and P must decrease during a spontaneous irreversible process. During a reversible process, the Gibbs free energy change must be zero  

If a mixture of monomers is not in equilibrium, any polymerization that occurs at constant temperature, T, and constant pressure, P, must lead to a decrease in the total Gibbs free energy of the system. A reaction variable may be defined. The fundamental property relation for a single phase system for the total differential of the Gibbs free energy can be written as a function of temperature, pressure, and chemical potential as follows  

Due to polymerization in a closed system, each may be replaced by the produa v- dz. Equation (12.22) then becomes 

Due to the fact that nG is a state function, the right-hand side of Equation (12.23) is an exact differential  

At equilibrium. Equation (12.24) becomes equal to zero. The fugacity of a species can be defined as 

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Entropy, enthalpy, and free energy of reversible polymerization Arrhenius relationship for rate constants Subcritical damped oscillations during thermal polymerization Polyrate of terpolymerization of AMS-AN-Sty Enthalpy of random copolymers Effect of chain sequence distribution Entropy and free energy of copolymerization Copolymer composition with and without ceiling temperature effect... 

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