Department of Bioproducts and Biosystems

Biobased Materials Technology

The biobased materials technology group (BIOMAT) led by Prof. Thaddeus Maloney carries out research related to the development of next generation fiber products. Our target is to develop material-based technologies which enable the renewal of the paper and board industries.
CHEM_bio_Nanocellulose printing paper

Our research areas:

  1. Pulp fiber structure and modification

  2. Carbon materials and energy storage

  3. Nanocellulose films

The BIOMAT team leverages the inherent possibilities of cellulosic fibers as building blocks for new sustainable products. Production of nanocellulose films, pulp dissolution, and porous carbon materials are current themes. We specialize in pore structure measurements and cellulose/water interactions.

Research themes:

1. Nanomaterial applications:

The BIOMAT team is developing nanomaterial applications for various fiber products. Especially, we are focused on technologies which have potentially large scale applications at an attractive cost structure.


NFC/MFC and nanopapers production

"Nanopapers" refers to paper grades where nanocellulose is a major structural component. Nanopapers have very different, and often superior properties than traditional grades of paper. We are working on nanocellulose production, suspension processing and nanopaper forming and dewatering issues.

Spray, roll, and airlaid forming methods

All-carbon films

We are developing graphene/nanocellulose composites and all-carbon films for various electrical applications.

2. Porous cellulosic materials:

The BIOMAT team is working on porous cellulosic materials. Lignocellulosic fibers and assemblies of nanocelluloses and other forms of cellulose have a fascinating pore structure that can be exploited in a number of product applications. This includes; liquid and gas phase absorbents, hygienic products and phase change composites for construction applications. In the world of porous materials, lignocellulosics are today very under represented. This work includes the development of cutting-edge techniques for measuring fiber, nanofiber and cellulose composite pore structure. We are also working on ways to modulate and stabilize the porosity of cellulosic materials and composites.


Porous nanopapers

In this area of research we are developing methods for producing high surface area and highly porous papers from nanocellulose-based furnishes.

Novel thermoporosimetry techniques

New approaches to thermoporosimetry are being developed including techniques based on unusual transformations of salts and solvents in confined geometries.

Image: Kaniz Moriam

3. Dissolution of pulp fibers:



Assessment and enhancement of pulp reactivity

This study investigates the behavior of pulp under direct dissolution. Pulp reactivity is indirectly assessed monitoring the rheological behavior of pulp suspensions while the fibers are dissolving. The goal is to provide a deeper understanding of which pulp features affect pulp reactivity and to use this knowledge to develop different activation treatments.

Pulp reactivity
CHEM_Bio_BioBased Material Technology Lab


Academic and Industrial Collaborations:

We have a multidisciplinary international team that works closely with industrial partners on topics that support the renewal of the forest products industry. Our work is dedicated to advancement of sustainable raw materials and products in areas where our partners see possibilities for value creation.

New collaborations with:

  • Coimbra University
  • UBI University (Portugal)
  • Karlstad University


New projects with:

  • Stora Enso
  • UPM Kymmene
  • Navigator Company

Research group members:

Recent graduates:



CHEM_Bio_Group photo Biobased Material Technology

Latest publications:

Effect of pulp prehydrolysis conditions on dissolution and regenerated cellulose pore structure

Antti Koistinen, Josphat Phiri, Kavindra Kesari, Tapani Vuorinen, Thaddeus Maloney 2023 Cellulose

Fast dewatering of high nanocellulose content papers with in-situ generated cationic micro-nano bubbles

Hamidreza Ahadian, Elaheh Sharifi Zamani, Josphat Phiri, Thaddeus Maloney 2022 Drying Technology

Sheet sealing in single and multilayer nanopapers

Hamidreza Ahadian, Elaheh Sharifi Zamani, Josphat Phiri, Miguel Alexandre Salvador Coelho, Thaddeus Maloney 2022 Cellulose

Studies on the sound absorption properties of wood-based pulp fibre foams

Jose Cucharero Moya, Sara Ceccherini, Muhammad Awais, Kari Kammiovirta, Thaddeus Maloney, Lauri Rautkari, Tapio Lokki, Tuomas Hänninen 2022 Proceedings of the 24th International Congress on Acoustics: A03: Building Acoustics

Tuning the Porosity, Water Interaction, and Redispersion of Nanocellulose Hydrogels by Osmotic Dehydration

Valentina Guccini, Josphat Phiri, Jon Trifol, Ville Rissanen, Seyede Maryam Mousavi, Jaana Vapaavuori, Tekla Tammelin, Thaddeus Maloney, Eero Kontturi 2022 ACS Applied Polymer Materials

Twin-roll forming, a novel method for producing high-consistency microfibrillated cellulosic films

Elaheh Sharifi Zamani, Hamidreza Ahadian, Thaddeus Maloney 2022 Cellulose

Characterization of bound and free water in gelatin hydrogels and their contribution to THz frequency permittivity

A. Tamminen, M. Baggio, R. Grigorev, I. Nefedova, S. V. Palli, J. Ala-Laurinaho, E. R. Brown, V. P. Wallace, E. MacPherson, T. Maloney, Z. D. Taylor 2022

Biological activity of multicomponent bio-hydrogels loaded with tragacanth gum

Roberta Teixeira Polez, Maria Morits, Christopher Jonkergouw, Josphat Phiri, Juan José Valle-Delgado, Jukka Seppälä, Markus B. Linder, Thaddeus Maloney, Orlando Rojas Gaona, Monika Österberg 2022 International Journal of Biological Macromolecules

Activation of softwood Kraft pulp at high solids content by endoglucanase and lytic polysaccharide monooxygenase

Sara Ceccherini, Jenni Rahikainen, Kaisa Marjamaa, Daisuke Sawada, Stina Grönqvist, Thaddeus Maloney 2021 Industrial Crops and Products
More information on our research in the Research database.
Research database
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