Copolymerization of Acrylamide with Acrylic acid

Baghdad Science Journal

doi:10.21123/bsj.9.2.285-288

Abstract

Low conversion copolymerization of acrylamide AM (monomer-1) have been conducted with acrylic acid AA in dry benzene at 70°C , using Benzoyl peroxide BPO as initiator . The copolymer composition has been determined by elemental analysis. The monomer reactivity ratios have been calculated by the Kelen-Tudos and Finman-Ross graphical procedures. The derived reactivity ratios (r1, r2) are: (0.620, 0.996) for (AM / AA) systems , and found that the reactivity of the monomer AA is more than the monomer AM in the copolymerization of (AA/AM) system. The reactivity ratios values were used for microstructures calculation.

Highlights

(acrylamide - Co- acrylic acid) PAM/AA is generally made by free radical polymerization [1]
The copolymer composition has been determined by elemental analysis
The monomer reactivity ratios have been calculated by the Kelen-Tudos and FinmanRoss graphical procedures

Summary

Introduction

(acrylamide - Co- acrylic acid) PAM/AA is generally made by free radical polymerization [1]. It prepared successfully in aqueous salt solution using anionic polyelectrolytes as stabilizers [2]. The estimation of copolymer composition and determination of reactivity ratios are significant for tailor-making properties. Copolymerization modulates both the intramolecular and intermolecular forces exercised between like and unlike polymer segments and properties such as glass transition temperature, melting point, solubility, permeability, adhesion, dyeability and chemical reactivity may be varied withen a wide limits. The relative reactivity of a monomer toward a certain polymer radical is readily calculated from the monomer reactivity ratios of copolymerization. Evalution of the rate constants of crosspropagating is required for estimation of the absolute reactivities of the polymer radical and of the monomer [8]

Materials and Methods

Results and Discussion

Test Blockiness