磁性功能化酚醛树脂的合成及对金属离子的吸附性能

磁性功能化酚醛树脂的合成及对金属离子的吸附性能;环氧酚醛树脂;螯合;金属离子;溶胀;吸附容量;吸附动力学

Synthesis of Magnetic Functional Phenolic Resins and Their Adsorption Properties for Metal Ions

Magnetic amino phenolic resin(F_(53)-NH) was synthesized by the reaction between epoxy phenolic resin and tetraethylene pentamine,and dithiocarboxylic sodium formate phenolic resin(F_(53)-CSSNa).Toluene diisocyanate phenolic resin(F_(53)-TDI) and thiosemicarbazide phenolic resin(F_(53)-CSNH_(2)) were synthesized(respectively) through the reactions between F_(53)-NH and each of CS_(2),TDI,NH_(2)NHCSNH_(2).The adsorption and swelling properties of the resins for metal ions Cu~(2 ),Pb~(2 ),Co~(2 ),Ni~(2 ),Ag~( ),Zn~(2 ),Cd~(2 ) were studied.The results show that the swelling properties of the synthetic resins in polar solvents are better than those in nonpolar solvents.F_(53)-NH resin has preferable adsorption properties for all of the determined metal ions,(however),the other three kinds of resins have obviously selectivity for determined metal ions,and adsorption capacities of the synthesized resins for Zn~(2 ) are 2.821,3.481,3.400 and 3.622 mmol/g respectively,(especially) higher than those for other metal ions.