The phase behavior and the structural properties of triton X-100/n-C8H17OH/PEG1000(aq) system

The phase behavior and the structural properties of Triton X-100/n-C8H17OH/ PEG1000(aq) system indicate that with increasing PEG1000, the partial phase diagram can be simplified, i.e. the lamellar liquid crystalline phase regi on (LLC) is gradually reduced. In Triton X-100 micelles and Triton X-100/n- C8H17OH/PEG1000(aq) O/W microemulsion droplets, PEG1000 molecules can locat e either in the surfactant interfacial layer or be adsorbed on this layer. In the LLC region, PEG1000 molecules exist in the aqueous layer or in the a mphiphile bilayer This collocation of the surfactant molecules results in l ess order and reduced stability of the LLC phase.