Laitinen, O., Suopajärvi, T. & Liimatainen, H. Enhancing packaging board properties using micro- and nanofibers prepared from recycled board. Cellulose 27, 7215–7225 (2020). https://doi.org/10.1007/s10570-020-03264-w
Enhancing packaging board properties using micro- and nanofibers prepared from recycled board
|Author:||Laitinen, Ossi1; Suopajärvi, Terhi1; Liimatainen, Henrikki1|
1Fiber and Particle Engineering, University of Oulu, P.O. Box 4300, 90014, Oulu, Finland
|Online Access:||PDF Full Text (PDF, 1.1 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2020110288995
|Publish Date:|| 2020-11-02
In this study, cellulose microfibers and cellulose nanofibers (CNF) prepared from recycled boxboard pulp using a mechanical fine friction grinder were used as reinforcements in a board sheet. Micro- and nanofibers manufactured by mechanical grinding have typically broad particle size distribution, and they can contain both micro- and nano-sized fibrils. Deep eutectic solvent of choline chloride and urea was used as a non-hydrolytic pretreatment medium for the CNF, and reference CNF were used without any chemical pretreatment. The CNF were ground using three grinding levels (grinding time) and their dosage in the board varied from 2 to 6 wt%. The results indicate that the board properties could be tailored to obtain a balance between the processability and quality of the products by adjusting the amount of CNF that was added (2–6 wt%). A preliminary cost assessment indicated that the most economical way to enhance the board strength properties was to add around 4% of CNF with a moderate grinding level (i.e., grinding energy of 3–4 kWh/kg). Overall, the strength properties of the manufactured board sheets improved by several dozen percentages when CNF was used as the reinforcement.
|Pages:||7215 - 7225|
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
216 Materials engineering
215 Chemical engineering
Open access funding provided by University of Oulu including Oulu University Hospital. The authors would like to acknowledge the funding provided by the Council of Oulu Region, granted by the European Regional Development Fund of the European Union for the New bioproducts and—chemicals from cellulose side streams using DES-based refining concept project (SelDES).
© The Author(s) 2020This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.