Correlations of properties and structures at different length scales of hydro- and organo-gels based on N-alkyl-(R)-12-hydroxyoctadecylammonium chlorides.

摘要: The self-assembly and gelating ability of a set N-alkyl-(R)-12-hydroxyoctadecylammonium chlorides (NCl-n, where n = 0–6, 18 is the length alkyl chain on nitrogen) are described. Several found to be ambidextrous (gelating both water variety organic liquids) very efficient (needing less than ca. 0.5 wt % at room temperature). Structure–property correlations different distance scales NCl-n in their hydro- organo-gels neat, solid states have been made using X-ray diffraction, neutron scattering, thermal, optical, cryo-SEM rheological techniques. self-assembled fibrillar networks consist spherulitic objects with fibers whose diameters degrees twisting differ organo-gels. Increasing (and, thus, molecular length) increases width hydrogels; an irregular, pronounced trend between fiber observed corresponding toluene gels. Time-dependent, small angle scattering data fo...