Colloidal Complexes of Perfluorooctadecanoic Acid with Cationic Copolymers

Thünemann, A.; Lochhaas, Kai Helmut

doi:10.1021/la990149s

Cited by 15 publications

(15 citation statements)

References 23 publications

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“…The complex formed by cationic poly[(acrylamidopropyl)trimethylammonium chloride] with fluorinated surfactant of sodium [bis(perfluorohexylethyl)-2-sulfosuccinate was also studied. [70] Films prepared from this complex showed a lamellar structure and an ultra-low energy surface with a surface tension of 6 mN/mÐthe lowest value observed to date. Another solid polyelectrolyte-fluorinated surfactant complex, prepared from copolymers of poly(diallyldimethylammonium chloride-co-N-methyl-N-vinylacetamide) with perfluorodecanoate, also showed ultra low energy surfaces.…”

Section: Polyelectrolyte±surfactant Complexes In the Solid Statementioning

confidence: 81%

Assembled Materials: Polyelectrolyte-Surfactant Complexes

2000

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Interactions of polyelectrolytes with oppositely charged surfactants can give rise to highly ordered structures (e.g., see Figure) that have potential use in various industries, such as the medical, food, and coating industries. This review focuses on colloidal and gel polyelectrolyte–surfactant complexes, including the resulting nanostructures. Physicochemical studies of DNA–surfactant complexes are also presented.

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Section: Polyelectrolyte±surfactant Complexes In the Solid Statementioning

confidence: 81%

Assembled Materials: Polyelectrolyte-Surfactant Complexes

2000

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“…The combination of low surface energy, their easy preparation, mesomorphic structures and their similarity to biological bilayer membranes makes PEFAs very attractive for both fundamental research and for possible industrial applications. In the future, it is expected that interesting new phases will be available, for example the columnar phases,37 which are formed by monodisperse disk‐like micelles38 of perfluorooctadecanoic acid ( a 1 ) and copolymers p 1 (see Fig 16).…”

Section: Discussionmentioning

confidence: 99%

Nano-structured materials with low surface energies formed by polyelectrolytes and fluorinated amphiphiles (PEFA)

Thünemann

2000

Polym. Int.

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Polymer complexes formed by polyelectrolytes and fluorinated amphiphiles (PEFA) represent a new class of materials which can be prepared easily as nano‐structured coatings on a large number of chemically different substrates. The surface energies of PEFA coatings are remarkably low and can be adjusted in the range 6–18 m Jm−2. Many of their physical properties, such as elastic modulus and mechanical strength, are determined by the nature of the polymer structure. By adjusting charge densities, molecular weights and the content of nonionic comonomers, a great variety of optimizations for a number of applications are possible. The amphiphiles have a decisive influence on the nano‐structure and on the surface energy of these materials. They act as building blocks, which vary in their number of fluorinated chains, their chain lengths and in the ionic head‐groups. Carboxylate, phosphate and sulfonate groups are preferred for the preparation of PEFAs. The scope of this review is to present a discussion of the mesomorphous structures (from columnar discotic to perforated lamellar), the low surface energies and attractive applications of these PEFA materials. Applications are found predominantly in low‐friction and anti‐soiling coatings. © 2000 Society of Chemical Industry

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“…The simplicity of their synthesis and the variability of these mesomorphous materials are attractive features that simplify the “fine-tuning” of the resultant structures. We have reported on a number of polyelectrolyte−surfactant complexes that form low surface energies. − Products produced from similar complexes have been put on the market, for example, as dirt repellent and low-friction coatings . It was shown earlier that polyelectrolytes containing diazosulfonate chromophores are useful for the preparation of solid complexes with nonfluorinated surfactants .…”

Section: Introductionmentioning

confidence: 99%

Self-Assembled Complexes of Diazosulfonate Polymers with Low Surface Energies

Thünemann

Schnöller²,

Nuyken³

et al. 1999

Macromolecules

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The structures of the water-insoluble complexes of acrylate-based copolymers containing diazosulfonate groups and a fluorinated cationic surfactant (Hoe L-3658-1) were examined by X-ray diffraction, contact angle measurements, differential scanning calorimetry, and spectroscopic methods (IR, UV−vis, fluorescence). The structures of the complexes were shown to be lamellar and determined by using Ruland's interface distribution function procedure. Remarkably low critical surface tensions were found, indicating the formation of ordered layers of fluorocarbon segments at the surfaces of the complexes. Fine-tuning of the complex structures was achieved by varying the composition of the copolymers as well as the pH value present at the time of preparation. The formation of excimers was found to be strongly influenced by the complex structure.

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Colloidal Complexes of Perfluorooctadecanoic Acid with Cationic Copolymers

Cited by 15 publications

References 23 publications

Assembled Materials: Polyelectrolyte-Surfactant Complexes

Assembled Materials: Polyelectrolyte-Surfactant Complexes

Nano-structured materials with low surface energies formed by polyelectrolytes and fluorinated amphiphiles (PEFA)

Self-Assembled Complexes of Diazosulfonate Polymers with Low Surface Energies

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