சுற்றுச்சூழல் பகுப்பாய்வு வேதியியல் இதழ்

Piperazine Polymerization Catalyzed by Maghnite-H

Abstract

 Djamila CD, Meghabar R and Belbachir M 

New polymers polypiperazines were synthesized in the presence of a non-toxic catalyst Maghnite-H+ from the addition of dihalogenated compounds such as 1,6-dichlorohexane and 1,2-dibromopropane to piperazine, after the comparative study of the polymerizations without and with this catalyst. The yields of the synthesis induced by Mahgnite-H+ are high compared with those of the uncatalyzed reactions. In our case, the effect of reaction time on the yield was studied by carrying out a series of experiments by maintaining the quantities of the reagents and varying the time t. On the other hand, polymerizations of piperazine are realized by maintaining the amounts of monomer, the time duration and varying the amount of Mahgnite-H+ in order to control the influence of the amount of this catalyst on the yield of the bulk polymerization of the piperazine. By constation, the yield grows either with the increase of reaction time, or by increasing the quantity of the catalyst. All products synthesized during the addition of dihalogenated compounds to piperazine were characterized by FT-IR spectroscopy (Perkin Elmer System), 1H-nuclear magnetic resonance (NMR) and 13C nuclear magnetic resonance (NMR) measurements were carried out on a 300 MHz Bruker NMR Spectrometer.