Properties of Lecithin Liquid Crystal Emulsion

doi:10.11944/j.issn.1000-0518.2018.10.170333

Chinese Journal of Applied Chemistry ›› 2018, Vol. 35 ›› Issue (10): 1227-1233.DOI: 10.11944/j.issn.1000-0518.2018.10.170333

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Properties of Lecithin Liquid Crystal Emulsion

ZHOU Meng^a,SHU Peng^b^*(),FENG Bei^c,SHANG Yazhuo^a^*(),LIU Honglai^a,LI Chengliang^c

^a Key Laboratory for Advanced Materials,School of Chemistry & Molecular Engineering,East China University of Science and Technology,Shanghai 200237,China;
^bInfinitus (China) Company Ltd,Guangzhou 510663,China
^cLB Cosmeceutical Technology Company Ltd,Shanghai 200233,China

Received:2017-09-12 Accepted:2017-12-18 Published:2018-10-01 Online:2018-10-09
Contact: SHU Peng,SHANG Yazhuo
Supported by:
Supported by the National Natural Science Foundation of China(No.21476072), the Fundamental Research Funds for the Central Universities of China

Abstract

Abstract:

A kind of liquid crystal emulsion was prepared with lecithin as the main emulsifier. The emulsion has good stability on the skin. The whole liquid crystal structure can be maintained for 6 hours on the surface of skin. It overcomes the problem that liquid crystal texture cannot stay on the skin for a long time in general liquid crystal emulsion. Liquid crystal structure has a high stability near skin temperature. It can provide conditions for other performances of liquid crystal emulsion. The water locking properties of different emulsions are measured by in vitro weighing method and the water locking property of liquid crystal emulsion is better than that of traditional emulsion. There are still fifty percent of the total water contents after 7 h. The results of dialysis experiments in vitro confirm that the liquid crystal emulsion has a remarkable slow-release property and can be released completely. The release ratio of target molecule is up to 96% after 7 h. It also shows that liquid crystal emulsion has excellent temperature resistance and low temperature freeze-thaw properties. The effect of temperature on the lamellar liquid crystals in emulsion is recoverable. The storage and transportation stability of emulsion is studied by the centrifugal method, high and low temperature cycle and placement under high and low temperature for 3 months. It shows that liquid crystal emulsion products have excellent storage and transportation stability. It is convenient for practical application and storage and transportation. The study not only provides necessary information and reference data for the development of multi-effect upmarket cosmetics, but also expands the application category of lecithin liquid crystal emulsifier system.

Key words: lecithin emulsifier, lamellar liquid crystals, emulsion properties, skin care emulsions

ZHOU Meng, SHU Peng, FENG Bei, SHANG Yazhuo, LIU Honglai, LI Chengliang. Properties of Lecithin Liquid Crystal Emulsion[J]. Chinese Journal of Applied Chemistry, 2018, 35(10): 1227-1233.

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Properties of Lecithin Liquid Crystal Emulsion

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