Title
Ionic liquid based on alkyl imidazolium cation: synthesis and application
Authors
YING XIA QINGLONG REN HUI ZHANG YU ZHONG JING GUO and SEN ZHANG

Received September 30, 2016
Published Volume 52 Issue 1-2 January-February
Keywords ionic liquid, reed cellulose, synthesis, application

Abstract
A novel ionic liquid (NIL) was successfully synthesized using N-vinylimidazole and 2-chlorthanol and applied to reed cellulose as a green and recyclable solvent. The structure of the NIL was characterized by Fourier transform infrared (FT-IR) spectroscopy and hydrogen nuclear magnetic resonance (1H NMR). The chemical structure, crystalline structure, thermostability and surface morphology of the reed treated by NIL (TR) and the untreated reed (NR) were investigated by FT-IR, X-ray diffraction (XRD), thermal gravimetric analysis (TGA) and scanning electron microscopy (SEM), respectively. The results showed that reed cellulose was directly dissolved in the NIL very easily without derivatization and degradation, retaining the characteristics of cellulose perfectly. During the process of treatment, the crystalline structure of NR was completely transformed (from cellulose I to cellulose II) along with a decrease in the crystallinity. Compared to the NR, the TR exhibited a lower onset temperature and more residues of the thermal decomposition. At the same time, the thermal stability of TR at high temperature was improved.