Preparation of spherical polymer beads of maleic anhydride–styrene–divinylbenzene and metal sorption of its derivatives

✍ Scribed by N. Ogawa; K. Honmyo; K. Harada; A. Sugii

• Publisher: John Wiley and Sons
• Year: 1984
• Tongue: English
• Weight: 398 KB
• Volume: 29
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1984.070290915

✦ Synopsis

Compounds having acid anhydride moiety have been used for starting materials for many useful derivatives. Spherical crosslinked polymer beads of porous maleic anhydride-styrenedivinylbenzene copolymer are obtained by suspension polymerization. Glycerol is found to be a preferable dispersant to make spherical beads. The beads contained 93% of the anhydride and 7% of the free carboxyls. As one of applications, the beads were hydrolyzed or reacted with anhydrous hydrazine, and the metal sorption behavior of them was examined. The hydrolyzed beads show a similar sorption manner as a conventional cation exchange resin having carboxylic acid groups, but the hydrazide beads sorbed mercury(I1) selectively over a wide pH range. This investigation suggests a simple preparative method for the insoluble spherical porous beads of the maleic anhydride copolymer.