Studying Reactivity Relationships of Copolymers N-naphthylacrylamide with (Acrylicacid and Methylacrylate)

Ameen Hadi Mohammed

doi:10.21123/bsj.2019.16.2.0345

Abstract

The organation ⁄monomer N-naphthylacrylamide (NAA) was prepared; subsequently the synthesized monomer was successfully copolymerized with acrylicacid (AA) and methylacrylate (MA) by free radical technique using dry benzene as solvent and benzoyl peroxide (BPO) as initiator. The overall conversion was kept low (≤ 10% wt/wt) for all studies copolymers samples. The synthesized monomer and copolymers were characterized using Fourier transform infrared spectroscopy (FT-IR), and their thermal properties were studied by DSC and TGA. The copolymers compositions were determined by elemental analysis. Kelen-Tudes and Finmman-Ross graphical procedures were employed to determine the monomers reactivity ratios. The derived reactivity ratios (r1, r2) are: (0.048, 0.687) for (NAA-co-AA) and (0.066, 0.346) for (NAA-co-MA). Based on the average reactivity ratios, sequence distribution of monomers in the copolymers and the microstructure of copolymers were calculated by statistical method and found that these values are in agreement with the derived reactivity ratios.

Highlights

Monomers of N-substituted acryl amide were prepared by a reaction of acryloyl chloride with different amines [1, 2]
Copolymerization is a process of chain polymerization, whereby a combination of two monomers can be used to undertake copolymerization, which results in the formation of polymeric products with distinct compositions within the polymer chain that are called copolymers [7]
NAA structure was confirmed from the appearance of 3300 cm1, 1590 cm-1 which merged with 1650 cm-1, 3150 cm-1, 1230 cm-1; NAA-co-AA: 3320 cm1, 3000 cm1, 1660 cm-1, 1720 cm-1, 1240 cm-1, 2910 cm-1; NAA-co-MA: 3300 cm1, 1650 cm-1, 1750 cm-1, 1350 cm-1, 1220 cm-1, 1010 cm-1, 2900 cm-1

Summary

Introduction

Monomers of N-substituted acryl amide were prepared by a reaction of acryloyl chloride with different amines [1, 2] Many of these monomers were copolymerized and terpolymerized with other monomers [3, 4], several of these copolymers were used as drugs and pigments [5, 6]. Research on chain copolymerization has been the primary source of information about monomer reactivities underpinned by carbocations, The properties of polymers can be most effectively modified with the help of the technique of copolymerisation [11].

Objectives

Methods

Results

Conclusion