Synthesis of charged linear and crosslinked maleic diester polymers with electron-beam irradiation

• Published in: Polymer international Vol. 52; no. 3; pp. 389 - 398
• Main Authors: Atta, Ayman M, Arndt, K-F
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 01.03.2003; Wiley
• Subjects: Applied sciences; chemical crosslinking; copolymer aggregates; Exact sciences and technology; ionizable hydrogels; irradiation; pH-dependent swelling; Physicochemistry of polymers; Polymerization; Polymers and radiations; Viscosity; Radiochemical copolymerization; Acrylamide derivative copolymer; pH-dependent swelling; chemical crosslinking; irradiation; Sulfonate copolymer; Colloidal gel; pH; ionizable hydrogels; Molecular aggregation; Acid copolymer; copolymer aggregates; Swelling; Maleate copolymer; Electrolyte solution; Electron beam; Solution copolymerization; Ethylene oxide copolymer; Experimental study; Polyelectrolyte; Ester copolymer; Medium effect; Hydrogel; Aqueous solution; Rheological properties
• ISSN: 0959-8103; 1097-0126
• DOI: 10.1002/pi.921

Series of maleic mono‐ and diester monomers have been prepared by esterification of maleic anhydride with poly(ethylene glycol) having different molecular weights, and with n‐dodecyl alcohol. These monomers were copolymerized with 2‐acrylamido‐2‐methylpropane sulfonic acid (AMPS) using different dose rates of electron‐beam irradiation ranging from 40 to 150 kGy. The synthesized copolymers were characterized by IR and 1H NMR analysis. Their aggregation behaviour and viscometric properties in aqueous solutions were investigated. The crosslinked copolymers were prepared in aqueous acidic solutions at pH 1 or in the presence of 1% of N,N‐methylene bisacrylamide (MBA) as crosslinking agent. The final equilibrium water content and swelling capacities for the prepared hydrogels were determined in aqueous solutions at pH = 1, 6.8 and 12 at 298 K. Swelling equilibria for the prepared hydrogels were carried out in aqueous solutions of NaCl, KCl, CaCl2, Na2SO4, K2SO4 and CaSO4 at concentrations ranging from 1 × 10−6 to 2 M at 298 K. © 2003 Society of Chemical Industry