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KTH

Lignin based fluorescent materials

Systematic study of the nature of lignin fluorescence mechanisms is still lacking, i.e., the relationship between lignin’s chemical structure/supermolecular structure and fluorescence properties including emission peaks/intensity, wavelength, and lifetime. Rare work is on modulation of lignin’s fluorescence properties through chemical structure modification. Lignin-based fluorescence materials design and application need further exploration.

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Development and Characterization of High-Solid Cellulose Fiber Foams

This project focuses on developing bio-based porous foams from cellulose fibers at relatively high fiber concentrations. The aim is to improve fiber dispersion stability and structural homogeneity by using cellulose nanofibrils (CNF) as a stabilizing component.The project will investigate how fiber concentration and CNF content affect the final foam structure, including porosity, shrinkage, density variations,

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Elucidating the mechanisms affecting diffusion of retention aid in flocculated fibre suspensions

The project is about the development of new knowledge regarding the transport of chemical retention aids and fines in flocculated pulp suspensions. Specifically, we have developed a method to study the diffusion of polyelectrolytes in model fiber flocs and to quantify the transport on the micrometre to millimetre scale.

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Low haze transparent wood

Based on our many years of transparent wood composite development with Prof. Lars Berglund from WWSC we are continuing towards wood material property control for low scattering optical composites. Project includes material preparation and advanced optical characterization, including time-resolved measurements with ps resolution.

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