Atmospheric and Autogenous Pressure

Further heating led to liquid-liquid phase separation observed as a cloud point. This is an example of LCST (lower critical solution temperature) behavior. 

1 and 8.2 provides an approximate idea of which solvents are suitable for atmospheric pressure solutions. 

A-perfluoroalkenes are not as good solvents for perfluorocarbons as cyclic perfluoroalkanes.The cyclic solvents give solutions with lower melting and crystallization temperatures and higher LCSTs. 

Perfluoropolymers have an extremely low degree of intermolecular inter-achon. Thus, the entropy of mixing is the dominant driving force for solubihty. Fluids that have even weak enthalpic interachons with themselves are poorer solvents for perfluoropolymers. For example, aromahe and other unsaturated perfluorocarbons are poorer solvents than their saturated counterparts. Using 

Comonomer type Comonomer concentration (mol %) Solution Bulk polymer Tm (°C) 

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