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Table of contents
1. Introduction
2. Theoretical background
2.1 Cellulose and nanocellulose
2.1.1 TEMPO-oxidized Cellulose (TCNF)
2.1.2 Carboxymethylated Cellulose (CMC)
2.2 Rheology of CNF Dispersions
2.3 Sonication and centrifugation
2.4 Flow-focusing
2.5 Analytical methods
2.5.1 Flow-stop
2.5.2 Tensile test
2.5.3 Scanning electron Microscopy
2.5.4 Wide-angle X-ray scattering
2.5.4.1 WAXS analysis of CNF filaments
2.5.4.2 Equations for WAXS analysis
3. Experimental setup
4. Method
4.1 Dispersions tested for spinning
4.2 Spinning
4.2 Optical Microscopy
4.3 Flow stop
4.4 Tensile testing
5. Difficulties resulting from COVID-19
6. Results
6.1 Spinning
6.2 WAXS-analysis
6.3 SEM
6.4 Flow-stop
6.5 Tensile testing and microscopy
7. Discussion
7.1 Spinning
7.2 WAXS
7.2.1 Crystallinity
7.2.2 Alignment
7.3 SEM
7.4 Flow-stop
7.5 Tensile testing and microscopy
7.6 Combined discussion
8. Conclusions
9. References
10. Appendix
10.1 Calculations
10.1.1 Calculation of crystallinity index
10.1.2 Calculation of orientation index
10.2 Figures
10.2.1 Flow-stop results
10.2.1.1 Flow-stop results for dispersions tested for spinning
10.2.1.2 Flow-stop results for dispersions not tested for spinning
10.2.2 Tensile results
10.3 Tables
