Hyaluronan/surfactant complexes – Connecting mesoscopic structure to macroscopic behaviour
The biopolyelectrolyte Hyaluronan (HA) is known since nearly 90 years. Still the fundamental principles of its complexes with surfactants are not fully understood yet. In this experiment the structural changes upon varying the nominal charge ration Z between HA and surfactant (Z=[-]/[+]) shall be investigated. This will be done for comparing the cationic TTAB (tetradecyltrimethylammonium bromide) and the zwitterionic lecithin. For TTAB for Z < 1the viscosity compared to pure HA or TTAB solutions is increased possibly due to positively charged micelles interconnecting the HA network or inclusion of HA into a hexagonal structure. On the other hand in a polymer excess region (Z > 1) complexes with lecithin, a phospholipid, will be studied. These complex solutions show a lowered viscosity, potentially caused by lipid layers wrapping the HA. From the comparison of these experiments a more general picture of the structural behaviour of such complexes will be derived.
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BUCHOLD Philipp; GRADZIELSKI Michael and SCHWEINS Ralf. (2015). Hyaluronan/surfactant complexes – Connecting mesoscopic structure to macroscopic behaviour. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-12-378
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