Citation:
WANG Jun, LIU Chang-Huan, HAN Jun, NING Meng-Meng, LI Cui-Qin. Synthesis and Surface Property of Cashew-based Surfactants[J]. Chinese Journal of Applied Chemistry,
;2010, 27(7): 866-868.
doi:
10.3724/SP.J.1095.2010.90661
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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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