Synthesis and characterization of poly(ethylene aspartate)-metal complexes

Poly(ethylene aspartate) [PEA] was synthesized by the melt condensation of D,L‐aspartic acid and ethylene glycol. PEA containing pendent amino and carbonyl groups in its repeating chain was used as the polymeric ligand for complexation with transition metal ions, viz. Co(II), Ni(II), Cu(II), Mn(II),...

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Bibliographic Details
Published in:Polymer international 1993, Vol.32 (3), p.215-220
Main Authors: Bajpai, U. D. N., Rai, Sandeep, Bajpai, Anjali
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
melt condensation
Organic polymers
Physicochemistry of polymers
poly(ethylene aspartate)
Polycondensation
polyester-metal complexes
Preparation, kinetics, thermodynamics, mechanism and catalysts
thermogravimetric analysis
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Summary:Poly(ethylene aspartate) [PEA] was synthesized by the melt condensation of D,L‐aspartic acid and ethylene glycol. PEA containing pendent amino and carbonyl groups in its repeating chain was used as the polymeric ligand for complexation with transition metal ions, viz. Co(II), Ni(II), Cu(II), Mn(II), Zn(II), Cd(II), Ca(II), Mg(II), Pb(II) and Hg(II). Complexation was found to be most effective in DMSO. The resulting polyester‐metal complexes were solid coloured materials which have been characterized by IR spectroscopy, elemental analysis and magnetic susceptibility measurements. The thermal stability of the polyester‐metal complexes was investigated by thermogravimetric analysis (TGA). On the basis of the physico‐chemical studies, an oxygen and nitrogen coordinated structure for the polyester‐metal complexes is proposed.
ISSN:0959-8103
1097-0126
DOI:10.1002/pi.4990320302