Journal
CARBOHYDRATE POLYMERS
Volume 154, Issue -, Pages 8-12Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2016.08.033
Keywords
Cellulose; Cellulose-carbamate; 1-n-Butyl-3-methylimidazolium chloride; Thin-film; Water retention
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Funding
- NSF [CBET-0929970, CBET-1336469, HRD1036593]
- USDA grant [CBG-2010-38821-21569]
- Direct For Education and Human Resources
- Division Of Human Resource Development [1036593] Funding Source: National Science Foundation
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Carbamate cross-linked cellulose films can be prepared in a two step method using cellulose dissolved in 1-n-butyl-3-methylimidazolium chloride ionic liquid. The new technique involves casting the film from cellulose ionic liquid solution onto a glass surface and application of alkyl/aryl diisocyanate in dry dimethylsulfoxide solution onto the cellulose - ionic liquid coating on glass and allowing the cross-linking reaction to occur on the pre-formed cellulose coating. The carbamate cross-linked cellulose films formed were characterized by FT-IR, and TG-DTA. The water retention values of the films are shown to decrease with the increase in hydrophobicity of the alky/aryl group linker in the carbamate bridges. (C) 2016 Elsevier Ltd. All rights reserved.
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