Wettability and surfactivity of sodium phosphate surfactants in strong alkali solutions

Abstract

The wettability, surfactivity and the correlation between wettability and surfactivity of sodium diethylhexylphosphate, sodium diethylhexyl polyoxyethylene phosphate and their complex in NaOH solutions were studied. A complex alkali resistant phosphate surfactant with good permeability was prepared. The wettability of surfactants was investigated by measuring the immersion time, sinking time and capillary effects of nature cotton grey fabric in NaOH solutions. The surfactivity of the surfactants was characterized by measuring the surface tension. The effect of the complex on the surface appearance of cotton grey fabric was also investigated with a scanning electron microscope (SEM). The results show that all the surfactants exhibit good wettability for cotton grey fabric in 0.5–5.0 mol/L of NaOH solutions, the complex system exhibits better wettability in 5.0–7.0 mol/L of NaOH solutions, in comparison with either corresponding single surfactant component employed, and wettability is well correlative with the surfactivities of the surfactant. SEM images indicate that the cotton grey fabric is well wetted by the alkaline surfactant solution and the quality of fabric is improved.

Keywords

sodium diethylhexylphosphate / sodium diethylhexyl polyoxyethylene phosphate / wettability / surfactivity / alkali / surfactant

References

[1] Buschle-DillerG., InglesbyM. K., WuY.. Physicochemical properties of chemically and enzymatically modified cellulosic surfaces [J]. Colloids Surf A, 2005, 260(6): 63-70

[2] FangB., CaoD.-h., JiangT.-qian.. Rheological properties of novel viscoelastic micelle systems containing anionic-nonionic dimeric surfactant [J]. Journal of Central South University of Technology, 2008, 15: 176-180

[3] LiuJ., VandenbergheJ., MasliyahJ., XuZ., YordanJ.. Fundamental study on talc-ink adhesion for talc-assisted flotation deinking of wastepaper [J]. Minerals Engineering, 2007, 20(5): 566-573

[4] SunJ.-l., SunL.-x., LiuW.-d., LiuX.-g., LiX., ShenQiang.. Alkaline consumption mechanisms by crude oil: A comparison of sodium carbonate and sodium hydroxide [J]. Colloids Surf A, 2008, 315(2): 38-43

[5] LeiZ.-d., YuanH.-y., SongJie.. Rheological behavior of alkali-surfactant-polymer/oil emulsion in porous media [J]. Journal of Central South University of Technology, 2008, 15: 462-466

[6] EckmannD. M., CavanaghD. P., BrangerA. B.. Wetting characteristics of aqueous surfactant-laden drops [J]. J Coll Interf Sci, 2001, 242: 386-394

[7] DutschkV., BreitzkeB., GrundkeK.. Wetting of aqueous surfactant solutions on polymer surfaces [J]. Tenside, Surfactants, Deterg, 2003, 5: 250-255

[8] SimončičB., VeronikaR.. Wettability of cotton fabric by aqueous solutions of surfactants with different structures [J]. Colloids Surf A, 2007, 292: 236-245

[9] HuangY.-p., DiQ.-ying.. Study on the preparation of alkali-resistant penetrant ND-96 [J]. Textile Auxiliaries, 2004, 21(2): 23-26

[10] LaiH.-m., YuX.-hu.. Study on synthesis and performance of phosphates of high alkali-resistant penetrant [J]. Chemistry & Bioengineering, 2009, 26(3): 27-27

[11] AiQ., LiN.-k., QianH.-l., TanX.-xian.. Characteristics and application of high-efficient and alkali-resistant penetrant CHS [J]. Textile Auxiliaries, 2001, 18(4): 32-33

[12] ChenS.-hui.. Preparation and application of alkaline resistant penetrating agent CP [J]. Journal of Wuhan University of Science and Engineering, 2003, 16: 60-63

[13] ZhangX.-t., LanS.-x., FangD.-l., LiY.-zhong.. Preparation and application of alkaline resist penetrating agent [J]. Dyeing and Finishing, 2004, 30(14): 43-45

[14] RosenM. J.Surfactants and interfacial phenomena [M], 2004, Hoboken, New Jersey, John Wiley & Sons Inc: 35-38