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Chemistry and Industry of Forest Products ›› 2022, Vol. 42 ›› Issue (1): 51-56.doi: 10.3969/j.issn.0253-2417.2022.01.007

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Synthesis and Properties of a Rosin-based Anionic Surfactant

Shujing PANG, Hao CHEN, Binglei SONG()   

  1. The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
  • Received:2020-11-16 Online:2022-02-28 Published:2022-03-11
  • Contact: Binglei SONG E-mail:ccfsbl@126.com


Using dehydroabietic acid (DA) and 6-aminocaproic acid as the raw materials, a rosin-based amino acid surfactant (R-6) was synthesized via reactions of chlorination, amidation and saponification reactions.The 1H NMR and 13C NMR signals of dehydroabietic acid were analyzed by using 2D NMR techniques, and the structure of the final product was also confirmed by 1H NMR and FT-IR.The solubility, surface tension and foam properties of R-6 were investigated.The results showed that at room temperature, R-6 showed excellent solubility of above 800 mmol/L in water.The critical micelle concentration (Ccmc) of the surfactant was 5.89 mmol/L, and the surface tension (γcmc) corresponding to Ccmc was 40.46 mN/m.With the increase of surfactant concentration, R-6 exhibited strong ability in stabilizing foams.When the concentration of R-6solution was 10 mmol/L, the foam half-life was as high as 1 966 min.

Key words: dehydroabietic acid, amino acid, surfactant, foam, solubility

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