The reaction results in a polymer which is also soluble in the chosen solvent. Heat released by the reaction is absorbed by the solvent, and so the reaction rate is reduced. Moreover the viscosity of the reaction mixture is reduced, not allowing autoacceleration at high monomer concentrations. Once the maximum or desired conversion is reached, excess solvent has to be removed in order to obtain the pure polymer. Hence, solution polymerization is mainly used for applications where the presence of a solvent is desired anyway, as is the case for varnish and adhesives. It is not useful for the production of dry polymers because of the difficulty of complete solvent removal.
- Foundations of Materials Science and Engineering, fourth edition, William F. Smith & Javad Hashemi
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