STUDY OF LYOTROPIC LIQUID-CRYSTALS CONTAI NING NONIONIC SURFACTANT OFTX-10

Lyotropic liquid crystals from nonionic surfactant (TX-10), styrene, a nd water were studied at 30 degrees C to determine the phase regions a nd obtain some typical photographs by using microscope with polarized- light. And the geometrical dimensions were determined by low angle X-r ay diffractrion. The X-ray data showed that the structure of mesophase disclosed lamellar liquid crystals with Bragg spacing ratio of 1 : 1 / 2 : 1 / 3 .... For these lamellar liquid crystals the results indica ted a linear increase of the interlayer spacing with addition of water or styrene and pronounced decrease with addition of TX-10 in the syst em, The H-2 NMR methods were specially applied to:determine the exact liquid crystals' structure, It was found that the structure varied fro m mixed W / O type microemulsions and lamellar liquid-crystals to sing le lamellar liquid crystals to single hexagonal liquid crystals to hex agonal liquid crystals and O / W type microemulsions in the liquid cry stal region with the addition of the water, These results were discuss ed theoretically.