In Based on Amino Acid Compounds Synthesis of New Poly(Ester-Imide)s and Poly(Imide-Urethane)s Derivatives

Abstract

ABSTRACT20 new poly(ester-imide)s and poly(imide-urethane)s structures were synthesized using low temperature solution condensation polymerization. These compounds were optically active, capable of emitting circularly polarized light. The results indicated that the efficiency of the compounds much higher under this synthesis method. Cost effectiveness and short process were other advantages of this synthesis method. The result of the thermal gravimetric analysis (TGA) revealed that heat resistance of some of these compounds was higher than 300°C. Characterization of the synthesized structures was carried out by 1 H-NMR, FT-IR, TGA, and elemental analysis.

Rate Evalution of Graft Copolymerization of Hydrophilic Monomers onto Natural Polymer

“…An efficient approach to modify of natural polymers, in order to synthesis of natural-based SAPs, is graft polymerization of vinylic monomers onto their backbones in the presence of crosslinkers. Free radical graft copolymerization with various monomers can carried out with different initiator systems [4][5][6] .In the present report, to modify the alginate, the grafting of Acrylamide (AAm) and 2-Acrylamido-2-methyl propan solfonic acid (AMPS) onto alginate chains in the presence of ammonium persulfate (APS) as an initiator was performed in a homogeneous system and dependence of kinetic polymerization with effective parameters were investigated.…”