Effects of fluorine atoms on the sorption of azo dyes by a nylon 6 film

摘要: The sorption behavior of sodium 1-phenyl-2-hydroxy-6-naphthalenesulfonate and its derivatives by a nylon 6 film was investigated in order to elucidate the effects fluorine atoms. For derivatives, amount dye sorbed increased with time, equilibrium not established even after soaked aqueous solution for 7 days. isotherms obtained were interpreted considering dual mechanism which is composed partition Langmuir type sorption. coefficients dependent on while parameters independent. thermodynamic calculated from temperature dependence intrinsic binding constants greatly influenced introduction trifluoromethyl methyl group into molecule. This result discussed consideration hydrating water molecules around anions.