Molecular organization and dynamics of micellar phase of polyelectrolyte–surfactant complexes: ESR spin probe study

• Published in: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Molecular and biomolecular spectroscopy, 2002-04, Vol.58 (6), p.1241-1255
• Main Authors: Wasserman, A.M., Kasaikin, V.A., Zakharova, Yu.A., Aliev, I.I., Baranovsky, V.Yu, Doseva, V., Yasina, L.L.
• Format: Article
• Language: English
• Subjects: Acrylic Resins - chemistry; Bromides - chemistry; Buffers; Detergents - pharmacology; Electrolytes - chemistry; Electron Spin Resonance Spectroscopy - methods; Ions; Micellar phase; Micelles; Models, Chemical; Molecular dynamics; Molecular organization; Polyethylenes - chemistry; Polymer–surfactant complexes; Polystyrenes - chemistry; Quaternary Ammonium Compounds - chemistry; Sodium Dodecyl Sulfate - chemistry; Spin probes; Surface-Active Agents - chemistry
• ISSN: 1386-1425
• DOI: 10.1016/S1386-1425(01)00714-4

Molecular dynamics and organization of the micellar phase of complexes of linear polyelectrolytes with ionogenic and non-ionogenic surfactants was studied by the ESR spin probe method. Complexes of polyacrylic acid (PAA) and sodium polystyrenesulfonate (PSS) with alkyltrimethylammonium bromides (ATAB), as well as complexes of poly- N, N′-dimethyldiallylammonium chloride (PDACL) with sodium dodecylsulfate (SDS) were studied. The micellar phase of such complexes is highly organized molecular system, molecular ordering of which near the polymeric chain is much higher than in the ‘center’ of the micelle, it depends on the polymer–detergent interaction, flexibility of polymeric chain and length of carbonic part of the detergent molecule. Complexes of polymethacrylic acid (PMAA) with non-ionic detergent (dodecyl-substituted polyethyleneglycol), show that the local mobility of surfactant in such complexes is significantly lower than in ‘free’ micelles and depends on the number of micellar particles participating in formation of complexes.