Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7891229 | Composites Part A: Applied Science and Manufacturing | 2016 | 11 Pages |
Abstract
All-cellulose composites are high performing green materials and solvent infusion processing makes their upscaled manufacturing possible. This study explored the use of aqueous 7 wt.% NaOH/12 wt.% urea solution as cost effective and environmentally friendly cellulose solvent for solvent infusion processing. A short dissolution time of 5 min led to all-cellulose composite laminates with a tensile strength of 114 ± 1.9 MPa and a Young's modulus of 7.8 ± 0.5 GPa. A decrease of tensile strength and Young's modulus with increasing dissolution time from 5 to 60 min was linked to changes in composite microstructure and fine structure of the reinforcing rayon fibres. It was shown that aqueous NaOH/urea solution is a promising alternative solvent, as it offers the advantages of shorter processing times and reduced solvent costs by 97%, while resulting in 25% stronger laminates, when compared to using ionic liquids.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Jan W. Dormanns, Jeremias Schuermann, Jörg Müssig, Benoît J.C. Duchemin, Mark P. Staiger,