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Ammonium perfluorononanoate (APFN) is an anionic surfactant that in water forms liquid crystalline phases (Lyotropic liquid crystal). It is the ammonium salt of perfluorononanoic acid. The phase diagram of APFN/H2O system is delineated by the presence of a lamellar phase and a nematic phase with awide isotropic solution. The nematic phase is of the type I, and the aggregates have a positive and diamagnetic anisotropy. In the presence of a magnetic field, the aggregates align parallel to the field direction. The change of phase at the lamellar-nematic temperature has been ascribed to order-disorder transitions.

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  • Ammonium perfluorononanoate (APFN) is an anionic surfactant that in water forms liquid crystalline phases (Lyotropic liquid crystal). It is the ammonium salt of perfluorononanoic acid. The phase diagram of APFN/H2O system is delineated by the presence of a lamellar phase and a nematic phase with awide isotropic solution. The nematic phase is of the type I, and the aggregates have a positive and diamagnetic anisotropy. In the presence of a magnetic field, the aggregates align parallel to the field direction. The change of phase at the lamellar-nematic temperature has been ascribed to order-disorder transitions. (en)
  • L'ammonio perfluorononanoato (noto in letteratura con l'acronimo APFN) è una molecola che in acqua ha proprietà di agente tensioattivo anionico. Il sistema binario APFN/H2O forma delle fasi intermedie solido-liquide (mesofasi ): il diagramma di fase del sistema APFN/H2O è caratterizzato, infatti, dalla presenza di due fasi liotropiche ( e nematica) e da un'ampia regione isotropa. La fase nematica è di tipo I, e gli aggregati hanno un'anisotropia positiva e diamagnetica (in presenza di un campo magnetico, gli aggregati si allineano parallelamente alla direzione del campo). La transizione di fase da lamellare a nematica è considerata una transizione ordine-disordine. (it)
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  • Heptadecafluorononanoic acid ammoniate (1:1) (en)
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  • 31417872 (xsd:integer)
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  • Ammonium perfluorononanoate.svg (en)
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  • 200 (xsd:integer)
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  • Heptadecafluorononanoic acid ammoniate (en)
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  • Ammonium perfluorononanoate (APFN) is an anionic surfactant that in water forms liquid crystalline phases (Lyotropic liquid crystal). It is the ammonium salt of perfluorononanoic acid. The phase diagram of APFN/H2O system is delineated by the presence of a lamellar phase and a nematic phase with awide isotropic solution. The nematic phase is of the type I, and the aggregates have a positive and diamagnetic anisotropy. In the presence of a magnetic field, the aggregates align parallel to the field direction. The change of phase at the lamellar-nematic temperature has been ascribed to order-disorder transitions. (en)
  • L'ammonio perfluorononanoato (noto in letteratura con l'acronimo APFN) è una molecola che in acqua ha proprietà di agente tensioattivo anionico. Il sistema binario APFN/H2O forma delle fasi intermedie solido-liquide (mesofasi ): il diagramma di fase del sistema APFN/H2O è caratterizzato, infatti, dalla presenza di due fasi liotropiche ( e nematica) e da un'ampia regione isotropa. (it)
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  • Ammonium perfluorononanoate (en)
  • Perfluorononanoato di ammonio (it)
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