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Dynamic rheology of modified starches
Author(s) -
Myers Raymond R.,
Knauss Carł J.,
Hoffman Ray D.
Publication year - 1962
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.1962.070062410
Subject(s) - rheology , resonance (particle physics) , materials science , analytical chemistry (journal) , chemistry , composite material , chromatography , physics , particle physics
Abstract Viscosities η and rigidities G were determined for 5% pastes of phosphate‐linked white milo starches and acidmodified cornstarches, using a resonance elastometer operating in the frequency range 0.1 to 40 cycles/sec. Most of the starches behaved as ideal Kelvin solids under these conditions, thereby permitting η and G to be evaluated from the height and location of the resonance peak. Sample calculations of η and G are given, followed by a discussion of the trends displayed by these values as the severity of treatment is increased.