Cellulose Light Interactions - Relationship between Refractive Index and Surface Chemistry of Cellulose Nanocrystals

Examensarbete för masterexamen

Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12380/302605
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Type: Examensarbete för masterexamen
Title: Cellulose Light Interactions - Relationship between Refractive Index and Surface Chemistry of Cellulose Nanocrystals
Authors: Wang, Lei
Abstract: Cellulose nanocrystals (CNC, CNCs) are a new type of biomass based nanomaterials derived from cellulose which is the most abundant biopolymer on Earth. Therefore, there is a need to have a defined and suitable battery of analytical methods to characterize their properties. Refractive index is an important parameter to describe CNC properties for analytical efforts and applications as well. However, refractive index of CNC is not conclusively reported. Therefore, this thesis is devoted in elucidating the refractive index on CNCs in suspension. In order to demonstrate relationship of CNCs suspension concentration and refractive index, refractive index of diluted CNC suspensions under different concentrations was quantified. Meanwhile, on the purpose of studying the relationship between CNCs and surface properties, periodate oxidation and desulfation were adopted to alter surface physico-chemical properties of CNC suspensions, and their refractive index and refractive index increment evolution was monitored. Based on the results of experiments, potential applications are discussed.
Keywords: Cellulose nanocrystals;Refractive index;Periodate oxidation;Optical applications of CNCs.
Issue Date: 2021
Publisher: Chalmers tekniska högskola / Institutionen för kemi och kemiteknik
URI: https://hdl.handle.net/20.500.12380/302605
Collection:Examensarbeten för masterexamen // Master Theses



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