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China Surfactant Detergent & Cosmetics ›› 2018, Vol. 48 ›› Issue (7): 363-370.doi: 10.13218/j.cnki.csdc.2018.07.001

• Basic research •     Next Articles

The surface activity study of divalent salts of perfluorinated carboxylic acids(PFA) and the mixtures of PFA/trivalent metal salts

XIAO Zi-bing1,DOU Zeng-pei2,3,HE Ting4,XING Hang2,3,XIAO Jin-xin2,3   

  1. 1.College of Chemistry,Nankai University,Tianjin 300071,China;
    2.Beijing FLUOBON Surfactant Institute,Beijing 100096,China;
    3.Longdong University—FLUOBON Surfactant Engineering Technology Center,College of Chemistry &Chemical Engineering,Longdong University,Qingyang,Gansu 745000,China;
    4.Lanzhou Chengguan Fanjiawan School,Lanzhou,Gansu 730020,China
  • Online:2018-07-22 Published:2019-03-22

Abstract: A series of divalent salts (M(PFOA)2 and M(PFBA)2,M2+=Mg2+,Ca2+,Sr2+,Ba2+) of perfluorooctanoic acid (PFOA) and perfluorobutanoic acid (PFBA) were synthesized,whose surface activities in water,dimethyl sulfoxide (DMSO) and ethylene glycol (EG) were studied.The aqueous solutions of perfluorinated carboxylic acids (i.e.PFOA and PFBA) mixed with trivalent metal salts were also investigated by surface tension measurement.The results show that the surface activities of M(PFOA)2 and M(PFBA)2 are higher than that of potassium perfluorooctanoate (PFOK) and potassium perfluorobutanoate (PFBK),respectively,in all of the three solvents.But the surface tension of the mixtures of PFOA (or PFBA) and trivalent metal salts show no improvement compared with that of PFOA (or PFBA) alone.M(PFOA)2 has shown the potential of reducing the usage amount of PFOA salts in application.

Key words: perfluorooctanoic acid divalent salt, perfluorobutanoic acid divalent salt, surface tension

CLC Number: 

  • TQ423