A1 Journal article (refereed)
Black Bioinks from Superstructured Carbonized Lignin Particles (2023)

Mattos, B. D., Jäntti, N., Khakalo, S., Zhu, Y., Miettinen, A., Parkkonen, J., Khakalo, A., Rojas, O. J., & Ago, M. (2023). Black Bioinks from Superstructured Carbonized Lignin Particles. Advanced Functional Materials, 33(45), Article 2304867. https://doi.org/10.1002/adfm.202304867

JYU authors or editors

Publication details

All authors or editorsMattos, Bruno D.; Jäntti, Noora; Khakalo, Sergei; Zhu, Ya; Miettinen, Arttu; Parkkonen, Joni; Khakalo, Alexey; Rojas, Orlando J.; Ago, Mariko

Journal or seriesAdvanced Functional Materials



Publication year2023

Publication date05/07/2023


Issue number45

Article number2304867

PublisherWiley-VCH Verlag

Publication countryGermany

Publication languageEnglish


Publication open accessOpenly available

Publication channel open accessPartially open access channel

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/88304


A renewable source of carbon black is introduced by the processing of lignin from agro-forestry residues. Lignin side streams are converted into spherical particles by direct aerosolization followed by carbonization. The obtained submicron black carbon is combined with cellulose nanofibers, which act as a binder and rheology modifier, resulting in a new type of colloidal bioink. The bioinks are tested in handwriting and direct ink writing. After consolidation, the black bioinks display total light reflectance (%R) at least three times lower than commercial black inks (reduction from 12 to 4%R). A loading of up to 20% of nanofibers positively affects the cohesion of the dried bioink (1 to 16 MPa), with no significant reduction in light reflectance. This is a result of the superstructuring of the ink components, which disrupts particle packing, intensifies colloidal interactions, introduces light absorption, and non-reflective multiple scattering.


Free keywordscarbonization; carbon materials; cellulose nanofibers; coatings; particlenetworks; pigments

Contributing organizations

Ministry reportingYes

Reporting Year2023

Preliminary JUFO rating3

Last updated on 2024-25-02 at 18:46