Aggregation of 1-alkyl-3-methylimidazolium octylsulphate ionic liquids and their interaction with Triton X-100 micelles

摘要: Halogen-free surface active and biamphiphilic ionic liquids 1-alkyl-3-methylimidazolium octylsulphates (Cnmim C8SO4, n = 4, 6, 8, 10) were synthesized their aqueous solution behaviour was studied using tension, conductance, 1H nuclear magnetic resonance (1H-NMR), small angle neutron scattering (SANS). These catanionic type surfactants demonstrate high activity. SANS data revealed that C4mim C8SO4 C6mim form spherical ellipsoidal micelles in water, while those with long chain imidazolium cations (C8mim C10mim C8SO4) depict limited solubility vesicles. The effect of addition these on the phase aggregation non-ionic surfactant Triton X-100 (TX-100) investigated cloud point (CP), 1H-NMR, zeta potential (DLS SANS) techniques. Cnmim show remarkable changes CP TX-100 solutions micelle size depending alkyl cation anion. site by NMR. for size/shape systems showed an to smaller transition. Addition C8mim a transition at lower concentration extended higher concentration, 100 mM formed vesicle structures. obtained results are discussed terms formation charged mixed desirably tailored adding appropriate concentrations liquids.