Synthesis And Characterization Of Thermally Resistant Aromatic Polyamide-metal Complexes

Sandeep  Rai1*, Anjali Bajpai2,  Snehal Lokhandwala1

1Shroff S R Rotary Institute of Chemical Technology, Bharuch, Gujarat 393002, India

2Department of Chemistry, Government Model Science College (Autonomous), Jabalpur 482001, India

Adv. Mater. Lett., 2014, 5 (4), pp 206-213

DOI: 10.5185/amlett.2013.7509

Publication Date (Web): Feb 16, 2014

E-mail: sadeep1964@yahoo.co.in

Abstract


Amino group terminated oligomeric aromatic polyamides were prepared using phosphorylation technique and subsequently converted into Schiff’s base coordination polymers by reaction with Co (II), Ni (II) and Cu (II) complexes of salicyladehyde [M(SAL)2] and 2-hydroxy-1-naphthaldehyde [M(NAPHTHAL)2]. These polyamide metal complexes were characterized by elemental analysis, IR spectroscopy and thermo gravimetric analysis; and an oxygen and nitrogen coordinated structure was inferred. Magnetic moment values of the different products indicated the variation in geometry. Introduction of metal ions into the polyamide chains enhanced the thermal stability of the coordination polymers as compared to the respective polymeric ligands.  As an extension of this simple and easy technique, the thermal stability of fibers, films, sheets and blocks of amino group containing polyamides can be increasing by introduction of metal ions through Schiff base formation. These polyamide Schiff base complexes are expected to show promising antimicrobial activities.

Keywords

Polyamides, coordination polymers, phosphorylation, Schiff base complexes

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