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Title of Journal: Fibers Polym

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Abbravation: Fibers and Polymers

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The Korean Fiber Society

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DOI

10.1007/bf02242002

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ISSN

1875-0052

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Preparation of carboxymethyl cellulose superabsorb

Authors: Hosein Bidgoli Akram Zamani Azam Jeihanipour Mohammad J Taherzadeh
Publish Date: 2014/05/09
Volume: 15, Issue: 3, Pages: 431-436
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Abstract

Production of superabsorbent polymers from cotton and viscose waste textiles was investigated The cellulose wastes were carboxymethylated crosslinked by divinylsulfone and then converted to superabsorbent material using airdrying freezedrying or airdrying after phase inversion The separation of cellulose from synthetic polymers in the textile polyester was carried out by direct dissolution of cellulose in NmethylmorpholineNoxide NMMO or separation by dissolution in water after carboxymethylation of the textiles The progress of the carboxymethylation reaction was evaluated by measurement of the degree of substitution DS of carboxymethyl cellulose CMC The DS values of 050–086 confirmed the prosperous substitution of hydrophilic carboxymethyl groups into the cellulosic chains The water binding capacity and the swelling rate of the superabsorbents prepared under different conditions were measured Under the best condition the superabsorbent obtained from waste textiles showed an ultimate water binding capacity of 541 g/g which was notably higher than that of the reference superabsorbent derived from cotton linter 470 g/g The amount of absorbed water by this product exceeded that of the reference sample after 60 min immersion

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