Rapid preparation of all-cellulose composites by solvent welding based on the use of aqueous solvent |
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Author: | Sirviö, J.A.1; Visanko, M.1; Hildebrandt, N.C.1,2 |
Organizations: |
1Fibre and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, 90014 Oulu, Finland 2Baden-Wuerttemberg Cooperative State University, Erzbergerstraße 121, 76133 Karlsruhe, Germany |
Format: | article |
Version: | accepted version |
Access: | open |
Online Access: | PDF Full Text (PDF, 1 MB) |
Persistent link: | http://urn.fi/urn:nbn:fi-fe2017111450693 |
Language: | English |
Published: |
Elsevier,
2017
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Publish Date: | 2019-10-16 |
Description: |
AbstractIn the present study, the dissolution of softwood fibers and fabrication of all-cellulose composites was investigated using aqueous tetraethylammonium hydroxide solution (TEAOH, 35 wt%) at room temperature. The bulk of the cellulose fibers were instantly dissolved when mixed with the solvent, and suspensions up to 3 wt% were fabricated with ease. During the dissolution, a few remaining larger fiber flocks were fully dissolved within 3 h of mixing at room temperature. TEAOH was further studied in the production of all-cellulose composites by solvent welding (partial dissolution) of cellulose fiber sheets. Tensile strength of the original cellulose sheet increased from 3.3 to 55.0 MPa only after 30 s of room-temperature solvent welding, and an increase of over 23-fold (up to 76.7 MPa) was obtained by high-pressure-aided hot-pressing of the partially dissolved sheets before drying. The demonstrated fabrication of all-cellulose composites yielded many benefits in comparison to the current dissolution systems, such as short treatment time, ambient operation conditions, and readily applicable processing solutions, which makes it a potential methodology applicable even at an industrial scale. see all
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Series: |
European polymer journal |
ISSN: | 0014-3057 |
ISSN-E: | 1873-1945 |
ISSN-L: | 0014-3057 |
Volume: | 97 |
Pages: | 292 - 298 |
DOI: | 10.1016/j.eurpolymj.2017.10.021 |
OADOI: | https://oadoi.org/10.1016/j.eurpolymj.2017.10.021 |
Type of Publication: |
A1 Journal article – refereed |
Field of Science: |
216 Materials engineering |
Subjects: | |
Dataset Reference: |
Data will be made available on request. |
Copyright information: |
© 2017 Elsevier. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http:/creativecommons.org/licenses/by-nc-nd/4.0/ |