✦ LIBER ✦

An Efficient and Environmentally Friendly Method for the Synthesis of Cellulose Carbamate by Microwave Heating

✍ Scribed by Yi Guo; Jinping Zhou; Yongbo Song; Lina Zhang

Publisher: John Wiley and Sons
Year: 2009
Tongue: English
Weight: 246 KB
Volume: 30
Category: Article
ISSN: 1022-1336
DOI: 10.1002/marc.200900238

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

An efficient, solvent‐free, and catalyst‐free microwave synthesis of cellulose carbamate from a mixture of native cellulose and urea is reported. The structure of the samples are characterized by elemental analysis, FT‐IR spectroscopy, X‐ray diffraction, and NMR spectrometry. Cellulose carbamates with a nitrogen content of 0.651–2.427% are obtained by microwave heating at 255 W for 2–5 min. With the introduction of carbamate groups, the hydrogen bonding and crystalline structure of the native cellulose are partially destroyed. The products retain the cellulose I crystalline form of the native cellulose, and display good solubility in NaOH solutions.

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