A two step method for the preparation of carbamate cross-linked cellulose films using an ionic liquid and their water retention properties. (10th December 2016)

• Record Type: Journal Article
• Authors: Amarasekara, Ananda S.; Hasan, Muhammad A.; Ha, Uyen
• Is Part Of: Carbohydrate polymers. Volume 154(2016)
• Page Start: 8
• Page End: 12
• Publication Date: 2016-12-10
• Subjects: Cellulose -- Cellulose-carbamate -- 1-n-Butyl-3-methylimidazolium chloride -- Thin-film -- Water retention; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2016.08.033
• Languages: English
• ISSNs: 0144-8617

Abstract

Highlights: Carbamate cross-linked cellulose films were prepared using an ionic liquid medium. New technique involves the cross-linking reaction in a pre-formed cellulose coating. Films were characterized by FT-IR, and TG-DTA. Water retention of films decreases with increase in hydrophobicity of the carbamate. Abstract: 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.