Study on the synthesis of a macroporous ethylacrylate-divinylbenzene copolymer, its conversion into a bi-functional cation exchange resin and applications for extraction of toxic heavy metals from wastewater

作者：Ali Syed Wasim; Waqar Farhat; Malik Muhammad Arif^*; Yasin Tariq; Muhammad Bashir

来源：Journal of Applied Polymer Science, 2013, 129(4): 2234-2243.

DOI：10.1002/app.38940

• porous materials
• synthesis and processing
• applications

Macroporus ethylacrylate-divinylbenzene copolymers were synthesized by suspension polymerization using diethyl phthalate and n-heptane as diluent. A hydrolysis study revealed that conversion of esters into carboxylic acid groups was dependent on three factors: (1) crosslinkage: increases with a decrease in crosslinkage, (2) reagent: sulfuric acid%26gt;aqueous NaOH%26gt;NaOH in a 1 : 1 water to ethylene glycol, and (3) pore volume (PV): highest when PV was approximate to 0.7 mL g1. Sulfuric acid hydrolyzed ester to COOH and introduced SO3H on phenyl rings, thus producing a bi-functional resin. The functional groups were verified by IR spectroscopy and quantified by acidbase titration. The bi-functional resin%26apos;s capacity for toxic heavy metals in water samples was 12.51, 10.43, 9.43, 13.21, and 11.12 mg g1 for Cu, Cd, Ni, Pb, and Zn, respectively and the recoveries exceeded %26gt;95% in range of pH 28, showing that it is suitable for water purification.

• 出版日期2013-8-15