Synthesis of Anion Exchange Adsorbent Particles by Surface Functionalization of Polystyrene-Divinylbenzene based Spherical Porous Matrices

Abstract

The replacement of Br- by trimethylamine for the synthesis of anion exchange adsorbent particles by surface functionalization of polystyrene-divinylbenzene based spherical porous particles was studied experimentally and theoretically. The calculated values of the kinetic parameters indicate that the net rate of the replacement of Br~ by trimethylamine is dominated by the kinetic mechanism involving the formation and opening of an epoxide, O CH2-CH -P, where P represents the polymeric backbone. The theoretical results obtained from the solution of the equations of the mathematical model that describes the dynamic behavior of the kinetic mechanisms, clearly indicate that the highest concentration of the desired product, + N(CH3)3 OH CH2-CH -P, on the surface of the pores of the particles, is obtained when the initial concentration of trimethylamine is highest. The equilibrium adsorption of bovine serum albumin (BSA) into the anion exchange adsorbent particles produced in this work was also studied, and the results indicate that the maximum value of the concentration of BSA in the adsorbed phase is a weak function of the concentration of the desired product, +N(CH3)3 OH CH2-CH-P, on the surface of the pores of the particles. © 1996 Elsevier Science Ireland Ltd. All rights reserved.

Department(s)

Chemical and Biochemical Engineering

Keywords and Phrases

Anion exchange; Porous adsorbent particles; Surface functionalization

International Standard Serial Number (ISSN)

0956-9618

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Elsevier, All rights reserved.

Publication Date

01 Jan 1996

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