University of Oulu

Garcia Vogel, A., Hooshmand, S. & Oksman, K. (2017). All-cellulose composites based on wet-spun cellulose fibers reinforced with cellulose nanocrystals and halloysite nanoclay. In 21st International Conference on Composite Materials : ICCM21 Proceedings. 20-25 August 2017, Xi'an, China. 3751. Zhenjiang: Chinese Society for Composite Materials.

All-cellulose composites based on wet-spun cellulose fibers reinforced with cellulose nanocrystals and halloysite nanoclay

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Author: García Vogel, Andrés1,2; Hooshmand, Saleh1; Oksman, Kristiina1,2
Organizations: 1Division of Materials Science, Luleå University of Technology
2Fiber and Particle Engineering, University of Oulu
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.8 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe2018101938505
Language: English
Published: Chinese Society for Composite Materials, 2017
Publish Date: 2018-10-19
Description:

Abstract

The aim of the study was to develop biobased and lightweight composites with unidirectional cellulose fibers without a matrix polymer, so called all-cellulose composites with excellent mechanical properties. Continuous cellulose fibers are currently gaining interest for composite applications and if these fibers can be welded together without using a polymer resin it would result in an environmental friendly composite material. The regenerated fibers were prepared using wet spinning of DMAc/LiCl dissolved cellulose where cellulose nanocrystals (CNC) and halloysite nanotubes (HNT) were used as reinforcements. The loading of the nanomaterials into the dissolved cellulose was between 2 to 20 %.

The preliminary results showed that the addition of both CNC and HNT improved the mechanical properties of the regenerated cellulose fibers. It was also seen that low concentration of the nanomaterials was more effective reinforcement than high concentration. Also, the HNT showed slightly better improvement compared to the CNC).

The spun nanocomposite fibers were directly wound to a roll after the wet spinning, compression molded to composite sheet and dried. The all-cellulose composites mechanical properties as well as microstructure including nanomaterials orientation in the spun fibers were studied and composites mechanical properties are compared with theoretical models.

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Article number: 3751
Host publication: 21st International Conference on Composite Materials : ICCM21 Proceedings. 20-25 August 2017, Xi'an, China
Conference: 21st International Conference on Composite Materials
Type of Publication: D3 Professional conference proceedings
Field of Science: 216 Materials engineering
221 Nanotechnology
Subjects:
Funding: The authors would like to acknowledge the financial support under Bio4Energy and TEKES under FiDiPro project.
Copyright information: The copyright for the papers belongs to the organizers, the ICCM21 Organizing committee. The ICCM21 has the right to publish the papers in any form and use them for marketing purpose of the conference. However, the ICCM21 Organizing Committee will not prevent you from publishing your paper, or results and data presented in your paper, elsewhere before or after the ICCM21 Conference provided that you (the authors) make reference (could be an acknowledgement or simply a footnote) to the paper published in the proceedings of the ICCM21, Xi'an, August 20-25th 2017.