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China Surfactant Detergent & Cosmetics ›› 2025, Vol. 55 ›› Issue (1): 26-33.doi: 10.3969/j.issn.2097-2806.2025.01.003

• Basic research • Previous Articles     Next Articles

Study on the foam properties of common surfactants

Yanfu Zhou1,2,Xuguang Wang1,*(),Feifei Wang1,2   

  1. 1. Yunnan Botanee Bio-technology Group Co., Ltd., Kunming, Yunnan 650106, China
    2. Yunnan Yunke Characteristic Plant Extraction Laboratory Co., Ltd., Kunming, Yunnan 650106, China
  • Received:2024-02-04 Revised:2024-12-26 Online:2025-01-22 Published:2025-01-23
  • Contact: E-mail: wangxuguang@botanee.com.

Abstract:

In this work, 10 commonly used surfactants were selected. The surface tension of their aqueous solutions was compared, and then the properties such as foam volume, foam density and foam stability were studied by using DFA100 dynamic foam analyzer. Pearson correlation coefficient was used to clarify the correlation between those indexes of foam characteristics. The results showed that, among these 10 surfactants, sodium methyl cocoyl taurate had the best foamability. The foams of disodium cocoyl glutamate and sodium cocoyl alaninate were the densest. The foam morphology stability and foam density stability were the best for sodium methyl cocoyl taurate and disodium cocoyl glutamate, but the worst for capryl/capramidopropyl betaine. However, capryl/capramidopropyl betaine had the best foam volume stability. The results of Pearson correlation coefficient analysis showed that a surfactant solution with lower surface tension was more likely to produce dense foams. The liquid content of foam would be higher if the bubbles were more abundant. The foam volume for the surfactant solution with larger initial foam density was more likely to collapse. The bubble number with higher drainage rate was decreased faster.

Key words: surfactant, surface tension, foam, stability, Pearson correlation coefficient

CLC Number: 

  • TQ423