Synthesis and Characterization of Monomer and Three Types of Polymers Containing Chalcone Groups in Main Chain

Abstract

This work was aimed to prepare new monomer (E)-1-(4-aminophenyl)-3-(4-hydroxyphenyl) prop-2-en-1-one] and three types of poly (ester-amide) polymers. New monomer is Chalcone compound α,βunsaturated ketone contain functional group(-CO-CH=CH-) of presence system α,βunsaturated carbonyl group. It is prepared by condensation aryl ketone with aromatic aldehyde with presence of suitable condensation agents which called Aldol condensation. Monomer reacted with (phthalic anhydride maleic anhydride salicylic acid and succinic anhydride) Via solution poly condensation reactions to yield three types of polymers. The prepared monmer and polymers were characterized by [(FT.IR-spectra, Nuclear magnetic resonance 1H.NMR-spectra , 13C.NMRspectra and Differential scanning calorimetry (DSC)] All the polymers showed good thermal stability and good data of glass transition temperature (Tg). The results revealed that poly (ester-amide)s were successfully prepared by giving good spectrum which improved the existed amide functional group (-CONH-) and ester functional group (-COO-) in spectrum of each prepared polymer, furthermore the existed chalcone functional group(-CO-CH=CH-) is improved in spectrums of monomer.

Synthesis of New Bismaleimide Homopolymer and Copolymers Derived from 4, 4ˉ-Bis[4-(N-maleimidyl) Phenyl Schiff Base] Tolidine

“…v NH2 while absorption bands at (1625) cm -1 and (1569) cm -1 are due to v C=N imine and v C=C aromatic respectively [15]. The FT-IR spectrum for compound (2) exhibited absorption bands at (3228-3334) cm -1 due to v O-H carboxyl and v NH amide [23]. Besides, the spectrum showed characteristic absorption bands at (1712) cm -1 and (1676) cm -1 , which are due to v C=O carboxyl and v C=O amide, respectively [24].…”

Preparation and Identification of Aromatic Copolyester Containing Chalcone Groups

“…Their harsh structures can give them high melting, or glass transition temperatures and restricted their solubility in nonaggressive organic solvents, most aromatic polymers are risqué to this process. [17,18,19,20]. Considering all these important aspects, we aimed in this research to: undertake the synthesis of new Unsaturated polyesters by solution polycondensation of diols and different anhydrides , evaluate their thermal properties in details and their characterization through Fourier transform infrared spectroscopy FTIR, 1H NMR, 13C NMR .…”