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Stability of multislit devolatilization of polymers
Author(s) -
Ianniruberto Giovanni,
Maffettone Pier Luca,
Astarita Gianni
Publication year - 1993
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690390114
Subject(s) - slit , polymer , work (physics) , stability (learning theory) , newtonian fluid , volumetric flow rate , shear rate , flow (mathematics) , mechanics , thermodynamics , chemistry , materials science , optics , physics , composite material , rheology , computer science , machine learning
Slit devolatilization of polymers has been considered in a recent work by Maffettone et al. (1991), who have presented a successful model for single slit devolatilization. In this article, the stability of operation of a realistic multislit process is considered. It is shown that the flow rate per slit which can be stably operated may be significantly less than the optimal one for single slit operation. Stability improves as the concentration of volatiles in the feed solution decreases. The non‐Newtonian character of the feed solution at high shear rates is discussed in qualitative terms.