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SASAMIS: Simulation-assisted scattering analysis of moisture-induced swelling in microfibril bundles

Updated: May 11

SASAMIS couples state-of-the-art molecular simulations with tailored X-ray scattering measurements to study the water interactions of cellulose microfibril bundles and lignin domains within spruce secondary cell walls. The approach provides fundamental information on the cell wall nanostructure and the moisture behaviour of its polymeric components. The generated knowledge will help us understand the water interactions of native wood, and eventually exploit them in technological applications. This will lead to more efficient utilization of the unique properties of wood and other lignocellulosic raw materials. The new capabilities in simulation-assisted scattering analysis will strengthen the leadership of the FinnCERES community in the field of biomass structural characterisation.

Main results

Clear methodological advance in studying nanoscale effects in wood

  • Our unique combination of experimental and computational research provides detailed information on the effects of moisture on the nanoscale building blocks of wood fiber walls.

  • Our up-to-date model of microfibril bundles allows transferring from a conceptual picture to a quantitative description of the moisture behavior of wood cell walls.

  • The approach is not limited to moisture behavior of wood but can be adapted to various cellulosic nanomaterials and for studies including mechanical stresses, mechanosorption, sorption hysteresis, and irreversible effects of drying.

Research Project Managers

Paavo Penttilä, Aalto

Antti Paajanen, VTT

Project status

Funded by FinnCERES from October 2019 until December 2022.

Related research is continuing in projects funded by Academy of Finland and Business Finland.

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