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China Surfactant Detergent & Cosmetics ›› 2022, Vol. 52 ›› Issue (1): 1-6.doi: 10.3969/j.issn.1001-1803.2022.01.001

• Basic research •     Next Articles

Study on the performance of sodium 9, 10-dihydroxystearate

Huang Siyu,Jiang Jianzhong(),Cui Zhenggang   

  1. School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
  • Received:2021-03-23 Revised:2021-12-01 Online:2022-01-22 Published:2022-01-19
  • Contact: Jianzhong Jiang E-mail:jzjiang@jiangnan.edu.cn

Abstract:

Sodium 9,10-dihydroxystearate (SDHS) was synthesized from oleic acid and hydrogen peroxide. Compared with the traditional method for preparing SDHS, this synthetic method had the advantages of short reaction time, high efficiency, no waste water, and low environmental pollution. The product was characterized by 1H-NMR, mass spectroscopy, GC and HPLC. The surface tension, detergency and the emulsifying, foaming and wetting properties of SDHS were studied. The results show that the SDHS synthesized by this method has higher purity; SDHS has good surface-active performance; the emulsifying ability of SDHS is better than those of sodium stearate and sodium oleate; it can stabilize O/W emulsions at low concentrations. Compared with traditional anionic surfactants, SDHS has poor foaming performance. SDHS is a kind of low-foaming surfactant and has poor foam stability. SDHS has good wetting performance, and its wetting power is better than sodium oleate and sodium stearate. The detergency experiment shows that SDHS has better cleaning performance, especially for sebum stained cloth. SDHS is suitable to be used in various detergent formulations.

Key words: oleic acid, hydroxystearic acid, wetting, detergency

CLC Number: 

  • TQ423