Effect of carboxymethylated cellulose nanofibril concentration regime upon material forming on mechanical properties in films and filaments
2021 (English)In: Cellulose, ISSN 0969-0239, E-ISSN 1572-882X, Vol. 28, p. 881-895Article in journal (Refereed) Published
Abstract [en]
Abstract: It is predicted that the forest and materials from the forest will play an important role to enable the transformation from our linear present to a circular and sustainable future. Therefore, there is a need to understand the materials that can be extracted from the forest, and how to use them in an efficient manner. Here, carboxymethylated cellulose nanofibrils (CNF) from the forest are used to produce films and filaments with the aim to preserve the impressive mechanical properties of a single CNF in a macro-scale material. The mechanical properties of both the films (tensile strength of 231 MPa) and filaments (tensile strength of 645 MPa) are demonstrated to be maximized when the starting suspension is in a flowing state. This is a new insight with regards to filament spinning of CNF, and it is here argued that the three main factors contributing to the mechanical properties of the filaments are (1) the possibility to produce a self-supporting filament from a suspension, (2) the CNF alignment inside the filament and (3) the spatial homogeneity of the starting suspension. The results in this study could possibly also apply to other nanomaterials such as carbon nanotubes and silk protein fibrils, which are predicted to play a large part in future high performing applications.
Place, publisher, year, edition, pages
Springer Science and Business Media B.V. , 2021. Vol. 28, p. 881-895
Keywords [en]
Cellulose nanofibril, Filament, Films, Material manufacturing, Spinning, Cellulose, Cellulose nanocrystals, Forestry, Linear transformations, Mathematical transformations, Nanofibers, Tensile strength, Carboxymethylated cellulose, High-performing applications, Large parts, Macro scale, Material forming, Nanofibril, Silk proteins, Spatial homogeneity, Cellulose films
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:ri:diva-50986DOI: 10.1007/s10570-020-03566-zScopus ID: 2-s2.0-85096055782OAI: oai:DiVA.org:ri-50986DiVA, id: diva2:1508946
Note
Funding details: Svenska Forskningsrådet Formas, 2014-183; Funding details: Stiftelsen för Strategisk Forskning, SSF; Funding text 1: Åsa Engström, AnneMarie Runebjörk, Shadi Samadnouri, Anita Teleman and Anders Reiman are thanked for excellent supporting work. Fredrik Lundell, Andreas Fall, Tiffany Abitbol, Daniel Söderberg, Tobias Köhnke, Oleksandr Nechyporchuk and Bengt Hagström are greatly acknowledged for fruitful discussions. BillerudKorsnäs, Borregaard, Fibria, Hansol Paper, Holmen, ITC, Mercer, Storaenso, Södra, Swedish Foundation for Strategic Research and FORMAS Project No. 2014-183 are acknowledged for their financial contribution.
2020-12-112020-12-112023-05-23Bibliographically approved