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Shear effect on the devolatilization of filled polymers
Author(s) -
Cheng Jianya,
Bigio David I.,
Briber Robert M.
Publication year - 1998
Publication title -
journal of vinyl and additive technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 1083-5601
DOI - 10.1002/vnl.10009
Subject(s) - shear (geology) , materials science , polymer , composite material , shear flow , shear rate , work (physics) , flow (mathematics) , mechanics , thermodynamics , rheology , physics
This is the second part of a systematic program to investigate the onset and mechanisms of devolatilization of filled polymeric materials. The object of this work is to study the effect of shear flow on the devolatilization of filled polymers. It is found that shear flow enables abrupt foam growth at relatively high absolute pressure in comparison to the cases without shear flow. The shear flow also reduces the threshold pressure which distinguishes two regimes of gradual and abrupt foam. In addition, an oscillatory foam growth phenomena was observed. The foam growth and devolatilization efficiency are found to depend on the imposed shear rate.