caa a22 4500 46318890X CHVBK 20180406164902.0 cr unu---uuuuu 170326e20070501xx s 000 0 eng 10.1007/s10973-006-8061-9 doi (NATIONALLICENCE)springer-10.1007/s10973-006-8061-9 Interactionsof cationic surfactantswith DPPC [Elektronische Daten] [M. Kozak, L. Domka, S. Jurga] The effects of different cationic surfactants (n-undecylammonum chloride, UDACl and dodecyldimethyl (dodecyloxymethyl) ammonium chloride, DDMDDACl) on fully hydrated 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) vesicles have been studied. In the studied systems the molar ratio (x) of DPPC/surfactant ranged between x=0.0164-0.82 and from x=0.0352-1.76 for DPPC/DDMDDACl and DPPC/UDACl, respectively. For both systems, the enthalpy associated with the phase transition significantly decreases even at the lowest surfactant concentration. Also the main phase transition temperature is shifted towards lower temperatures. The structural parameters of the phases have been characterised by small angle X-ray scattering (SAXS). The SAXS results have proved that UDACl at x=0.0352 molar ratio significantly influences the DPPC lamellar structure, while its total disappearance was observed for x=0.176. The presence of DDMDDACl causes a total disappearance of the DPPC lamellar structure already at the lowest molar ratio (x=0.0352). Each surfactant in the system with DDPPC leads to a mixed micellar phase formation. Springer-Verlag, 2007 cationic surfactants nationallicence 1,2-dipalmitoyl-sn-glycero-3-phosphocholine nationallicence DPPC nationallicence DSC nationallicence phase transition nationallicence phospholipids nationallicence SAXS nationallicence Kozak M. Department of Macromolecular Physics, A. Mickiewicz University, Poznań, Poland aut Domka L. Department of Metalorganic Chemistry, A. Mickiewicz University, Poznań, Poland aut Jurga S. Department of Macromolecular Physics, A. Mickiewicz University, Poznań, Poland aut Journal of Thermal Analysis and Calorimetry Kluwer Academic Publishers 88/2(2007-05-01), 395-399 1388-6150 88:2<395 2007 88 10973 https://doi.org/10.1007/s10973-006-8061-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-006-8061-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kozak M. Department of Macromolecular Physics, A. Mickiewicz University, Poznań, Poland aut NATIONALLICENCE 700 1- Domka L. Department of Metalorganic Chemistry, A. Mickiewicz University, Poznań, Poland aut NATIONALLICENCE 700 1- Jurga S. Department of Macromolecular Physics, A. Mickiewicz University, Poznań, Poland aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Kluwer Academic Publishers 88/2(2007-05-01), 395-399 1388-6150 88:2<395 2007 88 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer