𝔖 Bobbio Scriptorium
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Preparation of ion-exchange celluloses. I. Anion exchange celluloses

✍ Scribed by M. I. Khalil; A. Wally; A. Kantouch; M. H. Abo-Shosha

Publisher
John Wiley and Sons
Year
1989
Tongue
English
Weight
430 KB
Volume
38
Category
Article
ISSN
0021-8995

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✦ Synopsis

Cellulose-poly(glycidy1 methacrylate) graft copolymer (CPGMA) was treated with ammonia (AH), ethylamine (EA), diethylamine (DEA), and triethylamine (TEA). Factors affecting the reaction, such as reaction duration, temperature, liquor ratio, pH, and aminating agent/epoxide molar ratio were studied. A mechanism of the reaction was suggested. The anion exchange celluloses were characterized by studying its capacity, potentiometric titration, and durability to use. Potentiometric titration of the produced anion exchangers has been studied and pK, values were found to be 6.1, 7.6, and 8.9 for DEA-CPGMA, EA-CPGMA, and AH-CPGMA, respectively.

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