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Rheological properties of the aqueous solution for fluorocarbon‐containing hydrophobically modified sodium polyacrylic acid with various surfactants
Author(s) -
Guo JinFeng,
Zhuang DongQing,
Zhou Hui,
Zhang YunXiang
Publication year - 2001
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20010191207
Subject(s) - chemistry , pulmonary surfactant , cationic polymerization , polyacrylic acid , aqueous solution , fluorocarbon , polyelectrolyte , polymer chemistry , rheology , hydrophobic effect , chemical engineering , organic chemistry , polymer , materials science , biochemistry , engineering , composite material
The interaction of fluorocarbon‐ containing hydrophobically modified sodium polyacrylic acid (FMPAANa) (0.5 wt%) with various surfactants (anionic, nonionic and cationic) has been investigated by rheological measurements. Different rheological behaviors are displayed for ionic surfactants and nonionic surfactants. Fluorinated surfactants have stronger affinity with polyelectrolyte hydrophobes comparing with hydrogenated surfactants. The hydrophobic association of FMPAANa with a cationic surfactant (CTAB) and a fluorinated nonionic surfactant (FC171) is much stronger than with a nonionic surfactant (NP7. 5) and an anionic surfactant (FC143). Further investigation of the effects of temperature on solution properties shows that the dissociation energy E m is correlated to the strength of the aggregated junctions.