Surface Properties of Secondary Alcohol Polyoxyethylene Ether Sodium Sulfate
The optical microrheological properties,pour point,equilibrium and dynamic surface properties,spreadability and other properties of secondary alcohol polyoxyethylene ether sodium sulfate(SAES)were studied and compared with those of primary alcohol polyoxyethylene ether sodium sulfate(AES).The physicochemical properties indicated that with the increase of aging time,the viscoelasticity of SAES and AES increases,but the increase in SAES is smaller than that in AES.The pour point of SAES is significantly lower than that of AES.The surface performance showed that the critical micelle concentrations(cmc)of SAES and AES solutions were 0.44 mmol/L and 0.45 mmol/L,respectively.And the surface tension at cmc(γcmc)of SAES and AES solutions was 27.71 mN/m and 30.77 mN/m,respectively.Compared with AES,the diffusion adsorption rate of SAES was faster at the air-water surface and the adsorption process of SAES and AES aqueous solution under low concentration was a hybrid control adsorption.The application performance showed that compared with AES,SAES has a smaller contact angle and a larger spreading coefficient during the spreading process on the surface of paraffin.Additionally,SAES demonstrated weaker wetting,foaming,foam stability,emulsification,and salt and alkali resistance on canvas sheets.
secondary alcohol polyoxyethylene ether sodium sulfateviscoelasticitysurface activityspreadabilitywettabilityfoamabilityemulsificationsalt and alkali resistant
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