全氟羧酸二价盐及全氟羧酸/三价金属盐混合体系表面活性研究

doi:10.13218/j.cnki.csdc.2018.07.001

Abstract

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

XIAO Zi-bing,DOU Zeng-pei,HE Ting,XING Hang,XIAO Jin-xin. The surface activity study of divalent salts of perfluorinated carboxylic acids(PFA) and the mixtures of PFA/trivalent metal salts[J].China Surfactant Detergent & Cosmetics, 2018, 48(7): 363-370.

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

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