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Characterization of drag reducing guar gum in a rotating disk flow
Author(s) -
Kim C. A.,
Lim S. T.,
Choi H. J.,
Sohn J.I.,
Jhon M. S.
Publication year - 2002
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.10300
Subject(s) - guar gum , drag , guar , xanthan gum , materials science , chemical engineering , polysaccharide , chemistry , polymer chemistry , composite material , rheology , thermodynamics , food science , physics , organic chemistry , engineering
The turbulent drag reduction characteristics in a rotating disk apparatus were investigated by using polysaccharide guar gum in deionized water. The ultrasonic degradation method was adopted to obtain different molecular weight fractions of guar gum for this study. The stability of guar gum over time was observed to be better than the typical synthetic water‐soluble drag reducers [e.g., poly(ethylene oxide)]. A linear correlation between polymer concentration and the concentration/(drag reduction) for different molecular weights of guar gum was obtained, and the universal drag reduction curve for the guar gum/deionized water system was constructed. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 2938–2944, 2002; DOI 10.1002/app.10300