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The FRRPP Concept

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Free-Radical Retrograde-Precipitation Polymerization (FRRPP)

Abstract

From a first impression, the concept behind the FRRPP process is nothing special compared to polymerization-induced phase separation processes (PIPS) (Oh and Rey, 2002), wherein polymer formation induces conventional phase separation at temperatures below the upper critical solution temperature (UCST). What people fail to take into account are the effects of the polymerization reaction exotherm (heat generation) in the accompanying phase separation process. It is noted from Section 1.3 that adiabatic temperature rises from free-radical chain polymerizations are in the order of hundreds of degrees Celsius. Also, from Section 1.1, it is noted that at these temperature rises, polymer-small molecule mixtures can shift from a true solution to a phase separated system above the lower critical solution temperature (LCST). Based on the discussion in using Eqs. (1.2.9–1.2.14), we note that high-temperature domains dissipate heat faster as they become smaller, unless the mechanism of heat dissipation becomes inherently inefficient, such as conduction through gases or heat transfer via radiation.

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Authors and Affiliations

  1. Dept. Chemical Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI, 49931-1295, USA

    Dr. Gerard Caneba

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  1. Dr. Gerard Caneba
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Correspondence to Gerard Caneba .

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Caneba, G. (2010). The FRRPP Concept. In: Free-Radical Retrograde-Precipitation Polymerization (FRRPP). Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-03025-3_2

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