Patrik Ahvenainen

Comparison of sample crystallinity determination methods by X-ray diffraction for challenging cellulose I materials

Cellulose crystallinity assessment is important for optimizing the yield of cellulose products, such as bioethanol. X-ray diffraction is often used for this purpose for its perceived robustness and availability. In this work, the five most common analysis methods (the Segal peak height method and those based on peak fitting and/or amorphous standards) are critically reviewed and compared to two-dimensional Rietveld refinement. A larger (

Effects of phosphonium-based ionic liquids on phospholipid membranes studied by small-angle X-ray scattering

n=16

In muro deacetylation of xylan affects lignin properties and improves saccharification of aspen wood

n=16) and more varied collection of samples than previous studies have presented is used. In particular, samples (

Fibril orientation redistribution induced by stretching of cellulose nanofibril hydrogels

n=6

Monitoring the recrystallisation of amorphous xylitol using Raman spectroscopy and wide-angle X-ray scattering.

n=6) with low crystallinity and small crystallite sizes are included. A good linear correlation (