STUDY OF POLYCONDENSATION PROCESS OF CARBAMIDE WITH FORMALDEHYDE TO RECEIVE BIODEGRADABLE POLYMERS

Givi Papava,Eter Gavashelidze,Riva Liparteliani,Nazi Gelashvili,Ketevan Archvadze

doi:10.31435/rsglobal_ws/30092020/7209

Abstract

Biodegradation of polymers of spatial structure is complicated at the impact of soil destructive microorganisms and biodegradation requires long time. We have implemented target-oriented synthesis of a polymer to receive linear structure polymers where labile peptide bonds are preserved.To implement target-oriented synthesis of a polymer and to determine optimal conditions for reaction mechanism we studied the process of kinetics and its regularities – reaction temperature, duration, components ratio, concentration, reaction speed constant and activation energy. The Arrhenius factor and succession of introduction of initial components to the reaction medium were computed, catalyst nature and other properties were determined.High effect of prolongation was achieved, when carbamide and formaldehyde molar ratio was 1:1. In this case linear structure polymer is formed where peptide -CH2 – NH – are preserved.The simplified structure of linear polymer is expressed as followed: – HNCONHCH2[ NHCONHCH2 ]n – HNCONHCH2 – .

Highlights

Principle of the application of exchange fertilizer differs cardinally from that of commonly used fertilizers, which are well soluble in ground waters and are washed off
We studied the effect of carbamide and formaldehyde ratio on the reaction process
Some kinetic regularities of the interaction of amide components and aldehyde in the solution were studied at constant temperature, at 50, 60 and 70°C, when carbamide/formaldehyde ratio was 1:2

Summary

Introduction

Principle of the application of exchange fertilizer differs cardinally from that of commonly used fertilizers, which are well soluble in ground waters and are washed off. The only way to provide the population with farm products is application of nitrogen-containing chemical fertilizers in increased doses (mainly of ammonium nitrate and carbamide). Exchange fertilizers consist of hardly soluble ingredients which are released as plant nutrient components and are consumed by plants according to need, due to buffer effect of chemical reactions going on in soil.

Results

Conclusion