Phase behavior of homologous perfluoropolyether surfactants: NMR, SAXS, and optical microscopy

Stefania Mele; Barry William Ninham; Maura Monduzzi

doi:10.1021/jp049696z

Phase behavior of homologous perfluoropolyether surfactants: NMR, SAXS, and optical microscopy

Stefania Mele, Barry William Ninham, Maura Monduzzi^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	17751-17759
Number of pages	9
Journal	Journal of Physical Chemistry B
Volume	108
Issue number	46
DOIs	https://doi.org/10.1021/jp049696z
Publication status	Published - 18 Nov 2004

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abstract = "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.",

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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 - https://www.scopus.com/pages/publications/9944240889

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DO - 10.1021/jp049696z

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JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 46

ER -

Phase behavior of homologous perfluoropolyether surfactants: NMR, SAXS, and optical microscopy

Abstract

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