Abstract
Cashew phenol polyoxyethylene ethers ( CPE) were synthesized from cashew phenol as raw materials. In the presence of sodium hydroxide as a catalyst,a series of cashew phenol polyoxyethylene ether carboxylates( CPEC) were synthesized with CPE and chloroacetic acid. The products were structurally confirmed by FT-IR and elemental analysis. Surface properties were determined by a surface tension method. The experimental results showed that when critical micelle concentrations( CMC) of the surfactants were 9. 30,8. 50,8. 10 and 7. 71 mmol/L,the corresponding surface tensions at CMC were 28. 38,28. 60,30. 40 and 30. 00 mN/m,respectively. By means of Gibbs formula,the maximum adsorption amounts of the surfactants were 0. 7087,0. 7350,0. 7195 and 0. 7346 μmol/m2,and the minimal molecular projective areas of them were 2. 3439,2. 2600,2. 3087 and 2. 2613 nm2,respectively,on solution surface.
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