Some imidazolium-based ionic liquids (ILs) are able to dissolve microcrystalline cellulose to form 10 wt% solutions. This allows easy production of cellulose composite materials by mixing the respective solutions. The purpose of this work was to make an environmentally friendly novel material using cellulose as a binder to be an alternative for classical binders in electrically conductive materials. Eleven ILs were used to dissolve cellulose. The ILs included two ILs previously untested for this application. Monofilaments composed of three types of cellulose and carbon aerogels were prepared. Solutions of cellulose and carbon aerogels were made into electrically conducting materials. Regeneration of cellulose and composites from ILs was performed using water, ethanol, and acetone. From those antisolvents water proved to be the most effective. The solutions were made into films and fibre extrusions. The used ILs were successfully recovered and reused after regeneration of cellulose. This further strengthened the belief that dissolving cellulose with ionic liquids is a 'green process'.

In recent years, there has been a growing interest in the extraction of phenolic compounds from plants by using ionic liquid (IL) solutions. In this study, a colorimetric paper microzone assay was developed to analyse total phenolic contents in five imidazolium based IL solutions with concentrations 50-100 mM. Nine herb methanol extracts and two herb IL extracts were used for validation. The method validation parameters were as follows: the linear range for gallic acid and catechin in BMImAc, EMMImSO 4 , BMImCl, BMImBF 4 and C 12 MImCl aqueous solutions was between 0.25 and 2 mM, with the exception of catechin in a C 12 MImCl aqueous solution where it remained between 0.25 and 1.5 mM. LOD and LOQ values were determined for gallic acid and catechin IL solutions, whose IL structure and concentration were varied.In cases of all ionic liquids the determined LOD and LOQ values remained between 0.08-0.15 mM and 0.16-0.28 mM, respectively. The method was successfully validated against UV-Vis spectroscopy.

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