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Ionic Liquid Approach Toward Manufacture and Full Recycling of All‐Cellulose Composites
Author(s) -
Spörl Johanna M.,
Batti Fabio,
Vocht MarcPhillip,
Raab Raphael,
Müller Alexandra,
Hermanutz Frank,
Buchmeiser Michael R.
Publication year - 2018
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201700335
Subject(s) - ionic liquid , cellulose , materials science , pulp (tooth) , composite material , ultimate tensile strength , thermoplastic , cellulose fiber , biodegradation , flexural strength , fiber , chemical engineering , organic chemistry , catalysis , chemistry , medicine , pathology , engineering
All‐cellulose composites (ACCs) are prepared from high‐strength rayon fibers and cellulose pulp. The procedure comprises the use of a pulp cellulose solution in the ionic liquid (IL) 1‐ethyl‐3‐methyl imidazolium acetate ([EMIM][OAc]) as a precursor for the matrix component. High‐strength rayon fibers/fabrics are embedded in this solution of cellulose in the IL followed by removal of the IL. Different concentrations of cellulose in the IL are investigated and the mechanical properties of the final ACCs are determined via tensile, bending, and impact testing. ACCs prepared in this study show mechanical properties comparable to thermoplastic glass fiber‐reinforced plastics. Apart from being bio‐based, they possess several advantages such as biodegradability and full recyclability. The recycling of ACCs is successfully demonstrated in several cycles by using the recycled cellulose for subsequent matrix preparation.