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Rheological and thermal stability of novel weak gels based on sulfonated polyacrylamide/scleroglucan/chromium triacetate
Author(s) -
Alvand Ehsan,
Aalaie Jamal,
Hemmati Mahmood,
Sajjadian Vali Ahmad
Publication year - 2017
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.5287
Subject(s) - polyacrylamide , rheology , dynamic mechanical analysis , thermal stability , materials science , electrolyte , viscosity , chemical engineering , polymer , rheometry , polymer chemistry , composite material , chemistry , electrode , engineering
The present study deals with weak gels based on sulfonated polyacrylamide (SPA)/scleroglucan (SC)/Cr 3+ with an exceptional thermal stability in electrolyte media. The rheological results showed that on increasing the SC concentration the shear viscosity and storage modulus of the SPA/SC/Cr 3+ system were increased and the dependence of the storage modulus on frequency became weaker. The yield stress of the SPA/SC/Cr 3+ system was higher than that of the corresponding SPA/SC system. The thermochemical stability increased with increasing relaxation time. The SPA/SC/Cr 3+ semi‐interpenetrating network exhibited the lowest viscosity loss in electrolyte media; therefore this system may be a potential candidate for enhanced oil recovery applications. © 2016 Society of Chemical Industry