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Characterization of the conformational changes of partially hydrolyzed polyacrylamide chains in solution using stress recovery experiment
Author(s) -
Zhao F.,
Du Yu K.,
Liu Shu F.,
Xu Jing K.,
Tang Ji A.
Publication year - 2006
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.22575
Subject(s) - polyacrylamide , hydrolysis , polymer , chemistry , molecule , conformational change , chemical engineering , characterization (materials science) , polymer chemistry , materials science , organic chemistry , stereochemistry , nanotechnology , engineering
In this study, a simple empirical decay function model is fitted to the experimental data to characterize the conformational changes of partially hydrolyzed polyacrylamide (HPAM) in semidilute solutions, using the stress recovery experiment after cessation of a steady shear flow processing. With the increase of HPAM concentration and NaCl concentration, the parameter κ decreases, and this is in excellent agreement with the conformational changes of HPAM molecule chains. Experimental results show that the parameter κ can provide some information on the changes of the polymer chain conformation. the polymer chain conformation. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 2709–2713, 2006