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China Surfactant Detergent & Cosmetics ›› 2021, Vol. 51 ›› Issue (4): 294-298.doi: 10.3969/j.issn.1001-1803.2021.04.005

• Development and application • Previous Articles     Next Articles

Study of degreasing and fatliquoring properties of PEG fatty acid glycerides

WANG Zi-han(),XU Hu-jun()   

  1. School of Chemical & Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
  • Received:2020-07-16 Revised:2021-04-01 Online:2021-04-22 Published:2021-04-27
  • Contact: Hu-jun XU E-mail:602959905@qq.com;xu6209@163.com

Abstract:

The measurement system for the skin-surface degreasing and fatliquoring properties of surfactants was established by independently designing experiments based on Sebumeter method using pigskin as the subject skin for quantificationally measuring sebum content. In this system, the washing effects of aqueous solutions of PEG-7 lauric acid glycerides on the skin surfaces containing three oils that were commonly used in cosmetics (white oil, olive oil and simethicone, respectively) were tested, the results of which showed that the sebum decrease rate is increased first and then decreased with the increase of mass fraction. The washing effects of aqueous solutions of PEG-7 lauric acid glycerides on the skin surfaces without lipid were tested, and the skin surfaces were observed by electron microscopy. The results showed that the sebum content after washing is increased first and then remained constant with the increase of mass fraction, and a lipid film was formed on the skin surfaces. The washing effects of the aqueous mixture of sodium laurate/PEG-7 lauric acid glycerides on the skin surfaces containing olive oil were tested, the results of which showed that the sebum decrease rate is decreased first and then remained constant with the increase of amount of PEG-7 lauric acid glycerides. The experiments above proved that PEG fatty acid glycerides possessed good degreasing and fatliquoring properties. They could clean mildly when applied to related products and achieve a fatliquoring effect when compounded with soap base to improve the dry and tight feelings of skin after washing by soap base. Therefore, they had broad application prospect in makeup remover products and soap-based washing products.

Key words: PEG fatty acid glycerides, sebum content, sebum decrease rate, degreasing property, fatliquoring property

CLC Number: 

  • TQ423