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Application of the group contribution lattice-fluid EOS to polymer solutions

✍ Scribed by Martin S. High; Ronald P. Danner

Publisher
American Institute of Chemical Engineers
Year
1990
Tongue
English
Weight
653 KB
Volume
36
Category
Article
ISSN
0001-1541

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✦ Synopsis

A new group contribution lattice-fluid equation of state (GCLF-EOS) is described that can accurately predict the activities of solvents in polymer solutions. This equation of state is a modification of the equation of state derived by Panayioutou and Vera (1982), which is based on the lattice statistics developments of Guggenheim (1952). The group contribution modification permits the prediction of solvent activity, given only the structure of the polymer and solvent involved. The GCLF-EOS can accurately predict solvent activities in polystyrene, polyethylene, poly(ethy1ene oxide), poly(ethy1ene glycol), poly(propylene oxide), and poly(viny1 chloride). The model does not perform as well for solvent activities in polyisobutylene due to the inaccurate group contribution values for the quaternary carbon group.

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