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Citation: Dai Le-Rong, Su Xiao-Yan. Liquid Crystal and Spontaneous Emulsification in Nonionic Surfactant System(I)[J]. Acta Physico-Chimica Sinica, ;1995, 11(09): 831-835. doi: 10.3866/PKU.WHXB19950914 shu

Liquid Crystal and Spontaneous Emulsification in Nonionic Surfactant System(I)

Dai Le-Rong ,
Su Xiao-Yan

1.
Institute of Physical Chemistry,Peking University,Beijing 100871

Received Date: 13 July 1994
Available Online: 15 September 1995

The formation and structure of liquid crystal in Tween 80, Tween 85, Tween 85-Span 80 and H2O systems were studied. At room temperature, the results of low angle X-ray diffraction showed that hexa nal liquid crystal was formed in Tween 80-H2O system, whereas in Tween 85- H2O and Tween 80-Span 80 (7:3)-H2O systems lamellar liquid crystal was formed. In two lamellar crystal phases the thickness of amphiphilic layer was 66.8Å and 68.0Å respectively. The penetration of water in Tween 85 liquid crystal phase was higher than in Tween 80-Span 80 liquid crystal phase.
- Nonionic surfactant,
- Lyotropic liquid crystal
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