Zhang, K., Ketterle, L., Järvinen, T., Lorite, G. S., Hong, S., & Liimatainen, H. (2020). Self-assembly of graphene oxide and cellulose nanocrystals into continuous filament via interfacial nanoparticle complexation. Materials & Design, 193, 108791. https://doi.org/10.1016/j.matdes.2020.108791
Self-assembly of graphene oxide and cellulose nanocrystals into continuous filament via interfacial nanoparticle complexation
|Author:||Zhang, Kaitao1; Ketterle, Lukas2; Järvinen, Topias3;|
1Fiber and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, FI-90014, Finland
2Institute for Mechanical Process Engineering and Mechanics, Faculty of Chemical and Process Engineering, Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany
3Microelectronics Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu, P.O. Box 4300, FI-90014, Finland
4College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
|Online Access:||PDF Full Text (PDF, 3.6 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2020070646955
|Publish Date:|| 2020-07-06
The present work demonstrates the spinning of conductive filaments from oppositely charged nano-scale entities, i.e., cationic cellulose nanocrystals (CNC) and anionic graphene oxide (GO), via interfacial nanoparticle complexation. Especially, the role of CNC and GO concentration in filament formation was investigated. Moreover, the chemical structure, morphology and composition of formed CNC/GO composite filaments were further characterized. The positively charged CNC formed firstly a complex film with negatively charged GO flake and then the complexed structures were further assembled into macroscale hybrid filament (diameter about 20 to 50 μm). After chemical reduction of the hybrid filament, conductive filaments with an average tensile strength of 109 ± 8 MPa and electrical conductivity of 3298 ± 167 S/m were obtained. The presented approach provides a new pathway to understand the interaction of GO and nanocellulose, and to design macroscopic, assembled and functionalized architectures of GO and nanocellulose composites.
Materials & design
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
215 Chemical engineering
216 Materials engineering
The authors acknowledge the support from the Academy of Finland project “Bionanochemicals” (298295) and European Regional Development Fund/Council of Oulu region (“Novidam” project).
|Academy of Finland Grant Number:||
298295 (Academy of Finland Funding decision)
© 2020 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).