Dissolution and regeneration of lignocellulosic materials with ionic liquids BMIMCl and ([BMIM] [MeSO4]) and determination some of mechanical and physical properties

Abstract

In this study two imidazole-based Ionic liquids, 1- butyl -3 - methyl -1 - Imidazolium chloride (BMIMCl) and 1- butyl -3 - Methyl Imidazolium Methyl sulfate ([BMIM][MeSo4]), were used to dissolve wood flour, cellulose and CMP pulp. The overall evaluation indicates the inability of ([BMIM][MeSo4]) in full dissolution of lignocellulosic materials and sample treatment with this solvent was lead to water soluble degradation products. However, dissolution trials using BMIMCl was able to dissolve Lignocellulosics. Density, clarity, water absorption and thickness swelling of regenerated cellulose films were significantly higher than that of CMP and wood flour, and CMP, higher than wood flour. Also, cellulose film have the lowest water vapor permeability compared to wood flour and CMP. Tensile strength, Young's modulus and strain at breaking point of cellulose film were significantly higher than the CMP and wood flour samples.

Keywords

• Lignocellulosic materials
• Ionic liquid
• BMIMCl
• [BMIM][MeSo4]
• Dissolution
• Physical and mechanical properties