TY - JOUR
T1 - Phase behavior of homologous perfluoropolyether surfactants
T2 - NMR, SAXS, and optical microscopy
AU - Mele, Stefania
AU - Ninham, Barry William
AU - Monduzzi, Maura
PY - 2004/11/18
Y1 - 2004/11/18
N2 - Self-assembled structures formed by perfluoropolyether (PFPE) carboxylates with Hydrophobic chain terminated by Cl-C3F6O, and either sodium or ammonium counterions, have been explored in aqueous binary systems. The focus is on the different counterion-specific micelles and liquid crystals formed. These have been detected and characterized via optical microscopy, SAXS, and NMR. All Cl-PFPE surfactants form lamellar and cubic liquid crystals independently of chain length and counterion. Nonspherical micelles for the shortest PFPE chain surfactants and anomalous swelling of the lamellar phases for almost all surfactants were ascertained.
AB - Self-assembled structures formed by perfluoropolyether (PFPE) carboxylates with Hydrophobic chain terminated by Cl-C3F6O, and either sodium or ammonium counterions, have been explored in aqueous binary systems. The focus is on the different counterion-specific micelles and liquid crystals formed. These have been detected and characterized via optical microscopy, SAXS, and NMR. All Cl-PFPE surfactants form lamellar and cubic liquid crystals independently of chain length and counterion. Nonspherical micelles for the shortest PFPE chain surfactants and anomalous swelling of the lamellar phases for almost all surfactants were ascertained.
UR - http://www.scopus.com/inward/record.url?scp=9944240889&partnerID=8YFLogxK
U2 - 10.1021/jp049696z
DO - 10.1021/jp049696z
M3 - Article
SN - 1520-6106
VL - 108
SP - 17751
EP - 17759
JO - Journal of Physical Chemistry B
JF - Journal of Physical Chemistry B
IS - 46
ER -