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Dispersion of multi-walled carbon nanotubes and their incorporation into lignin based fibres

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Title: Dispersion of multi-walled carbon nanotubes and their incorporation into lignin based fibres
Author: Teng, Nai-Yu
Degree Master of Science - MSc
Program Forestry
Copyright Date: 2012
Publicly Available in cIRcle 2012-11-01
Abstract: Softwood Kraft lignin (SKL) and fractions obtained from solvent fractionation were used and characterized. Characterizations showed that F₄SKL, the solubilizable fraction with the highest molecular weight, exhibits association of the lignin molecules. A small amount of F₄SKL facilitated the dispersion of multi-walled carbon nanotubes (MWNTs) in dimethylformamide (DMF) solutions. π-interactions played an important role in the effective dispersal of MWNTs. Raman spectroscopy data also revealed that greater concentrations of F₄SKL could further disperse MWNTs. Also,dispersion of MWNTs affects the performance of the electrospinning process.The mechanical properties and electrical conductivity of the fibres did not improve with incorporating MWNTs.
URI: http://hdl.handle.net/2429/43562
Scholarly Level: Graduate

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