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Processing of Polymers with Supercritical Fluids
Author(s) -
Alsoy S.,
Duda J. L.
Publication year - 1999
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/(sici)1521-4125(199911)22:11<971::aid-ceat971>3.0.co;2-v
Subject(s) - supercritical fluid , polymer , impurity , monomer , chemical engineering , thermal diffusivity , organic chemistry , materials science , chemistry , chromatography , thermodynamics , physics , engineering
The removal of impurities, such as residual solvents, unreacted monomers, catalysts, and side‐reaction products from polymers represents an important step in polymer processing. Conventional devolatilization techniques for the purification of polymers have limited effectiveness. Devolatilization with supercritical fluids, however, can enhance impurity removal by increasing the thermodynamic driving force and molecular diffusivity.