Synthesize and characterization of p-hydroxybenzoic acid urea formaldehyde Copolymer chelats with( Ca(II),Sr(II) and Ba(II) )ions

الملخص

Copoymer (PUF) were synthesized by the condensation of  p-hydroxybenzoic acid (P) –urea (U) –formaldehyde (F) in the presence of HCl catalysts.

   Chelates of Ca^(II),  Sr^(II), and Ba^(II) have been prepared from copolymer (PUF). The probable structures were elucidated on IR and A.A spectroscopy. Thermogravimetric analysis and derivative of the thermogravimetric ( DTG). has been carried out to ascertain the relative thermal stability of ligand and chelates from the above data we suggested octahedral geometry for Ca^(II),  Sr^(II), and Ba^(II) chelates.