Co-Terpolymerization of m-phenylenediamine, O-Anisidine, 2,3-Xyilidine: Synthesis and Charachterization

Omar Melad, Mohammed Hilles

Abstract: Copolymers of m-phenylenediamine and O-Anisidine were synthesized by oxidative polymerization at different monomer ratios using ammonium persulfate as as oxidant in HCl medium. The yield and the conductivity of the copolymers increase as O-Anisidine ratios increase which leading to increase the polymer chain in the same time increasing of conjugation system. The effect of introducing a third monomer to the copolymer of m-phenylenediamine and O-Anisidine were studied by  the addition of 2,3-Xyilidine to obtain different molar ratios of terpolymers. The yield, intrinsic viscosity and the conductivity of the terpolymers were studied and compare with the copolymers. The Co-Terpolymerization of m-phenylenediamine, O-Anisidine and  2,3-Xyilidine were charachterized by FTIR and  UV-Visible spectroscopy.The terpolymers seem dependency on polymerization yield, conductivity and intrinsic viscosity are 89% for MPD/OA/XY (70/10/20) terpolymer, 1.511 S/m for MPD/OA/XY (70/10/20) and 1.1 dl/g for MPD/OA/XY (70/25/5) compared to the yield obtained of MPD/OA copolymer which is 83% for [(MPD(75)/OA(25)] and conductivity of 1.228 S/m for [(MPD(25)/OA(75)], which may be attributed that the terpolymers chaotic super molecular structure than the copolymer leading to increase the polymer chain and then increasing the conjugation system. The FTIR and UV-Vis investigation suggest that the polymers obtain are actual copolymer of MPD/OA and terpolymer of MPD/OA/XY.

Keywords: Copolymer, terpolymer, conducting polymers, UV-Visible spectroscopy, IR spectroscopy, m-phenylenediamine.

Pages: 75 – 85 | Full PDF Paper