Super water-absorbing new material from chitosan, EDTA and urea

Narayanan, Abathodharanan ; Dhamodharan, Raghavachari (2015) Super water-absorbing new material from chitosan, EDTA and urea Carbohydrate Polymers, 134 . pp. 337-343. ISSN 0144-8617

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Official URL: http://doi.org/10.1016/j.carbpol.2015.08.010

Related URL: http://dx.doi.org/10.1016/j.carbpol.2015.08.010

Abstract

A new, super water-absorbing, material is synthesized by the reaction between chitosan, EDTA and urea and named as CHEDUR. CHEDUR is probably formed through the crosslinking of chitosan molecules (CH) with the EDTA–urea (EDUR) adduct that is formed during the reaction. CHEDUR as well as the other products formed in control reactions are characterized extensively. CHEDUR exhibits a very high water uptake capacity when compared with chitosan, chitosan–EDTA adduct, as well as a commercial diaper material. A systematic study was done to find the optimum composition as well as reaction conditions for maximum water absorbing capacity. CHEDUR can play a vital role in applications that demand the rapid absorption and slow release of water such as agriculture, as a three in one new material for the slow release of urea, water and other metal ions that can be attached through the EDTA component. The other potential advantage of CHEDUR is that it can be expected to degrade in soil based on its chitosan backbone. The new material with rapid and high water uptake could also find potential applications as biodegradable active ingredient of the diaper material.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:131797
Deposited On:08 Dec 2022 09:28
Last Modified:08 Dec 2022 09:28

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