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Effect of ferric ions on drag reduction effectiveness of polyacrylamide
Author(s) -
Hoyt J. W.
Publication year - 1980
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760200709
Subject(s) - polyacrylamide , drag , ferric , rheometer , materials science , degradation (telecommunications) , polymer , reproducibility , reduction (mathematics) , capillary action , ion , composite material , chemical engineering , chromatography , chemistry , mechanics , rheology , polymer chemistry , metallurgy , computer science , organic chemistry , engineering , physics , telecommunications , geometry , mathematics
The drag reduction performance of polyaerylarnide polymers is severely degraded by the presence of ferric ions in solution. This effect has been noticed during the course of earlier experimental work and may have contributed greatly to poor reproducibility of results. The present work provides a more quantitative basis for estimating the effect of ferric ions on the drag reduction performance of polyacrylamide. Tests i a capillary‐tube rheometer and in a one‐in. pipe‐flow facility provide data for estimating the possible degradation effect o several different commercial polyacrylamides. In some case the degradation products deposit on the pipe wall, causing a increased roughness effect.