Projects per year
Abstract
Polymerization of lignin has garnered significant interest due to its potential to unlock innovative and value-added applications for lignin to replace petroleum-based phenolic synthetics in future polymeric materials. However, conventional strategies for lignin polymerization often adopt complex cross-linking reactions with large amounts of unsustainable chemicals, which may impose environmental and ecological concerns. Herein, a green method for polyphenol polymerization is developed, in which tannin-rich extracts serve as building blocks to facilitate lignin polymerization under laccase-catalyzed oxidation. The molar mass and chemical structure of polymerized lignin, tannin, and their mixture and polymerization kinetics are comprehensively studied. Results show that the incorporation of tannin can increase the polymerization degree and rate of lignin and preserve more phenolic–OH groups after laccase incubation compared with self-polymerized lignin or tannin. Moreover, the possible polymerization mechanisms for lignin and tannin samples are proposed based on NMR and FTIR spectrum analysis. The polymerized lignin–tannin samples have superior or similar physicochemical properties compared to self-polymerized lignin or tannin in terms of UV shielding, thermal stability, and antimicrobial properties. Overall, this study offers novel insights into the copolymerization of lignin and tannin catalyzed by laccase and underpins further applications of upgraded polyphenols as polymers.
| Original language | English |
|---|---|
| Pages (from-to) | 8765-8779 |
| Number of pages | 15 |
| Journal | ACS Sustainable Chemistry and Engineering |
| Volume | 12 |
| Issue number | 23 |
| DOIs | |
| Publication status | Published - 29 May 2024 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- lignin–tannin copolymerization
- polyphenols
- alkaliphilic laccase
- antimicrobial polymer
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Dive into the research topics of 'Laccase-Catalyzed Copolymerization of Tannin and Technical Lignin: Polymerization Kinetics and Enhanced Properties of Polyphenols'. Together they form a unique fingerprint.Equipment
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Åbo Akademi Functional Printing Center
Toivakka, M. (PI), Rosenholm, J. (PI), Anttu, N. (PI), Bobacka, J. (PI), Huynh, T. P. (PI), Peltonen, J. (PI), Wang, X. (PI), Wilen, C.-E. (PI), Xu, C. (PI), Zhang, H. (PI) & Österbacka, R. (PI)
Faculty of Science and EngineeringFacility/equipment: Facility
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PII: Printed Intelligence Infrastructure
Toivakka, M. (Principal Investigator), Xu, C. (Co-Principal Investigator), Bobacka, J. (Co-Principal Investigator), Viitala, T. (Co-Principal Investigator), Rosenholm, J. (Co-Principal Investigator), Österbacka, R. (Co-Principal Investigator), Anttu, N. (Co-Principal Investigator), Huynh, T. P. (Co-Principal Investigator), Peltonen, J. (Co-Principal Investigator), Wang, X. (Co-Principal Investigator), Zhang, H. (Co-Principal Investigator) & Wilen, C.-E. (Co-Principal Investigator)
01/01/24 → 31/12/28
Project: Research Council of Finland/Other Research Councils
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MADNESS: Centre of Excellence in Materials-driven solutions for combatting antimicrobial resistance
Rosenholm, J. (Principal Investigator), Porres Paltor, I. (Co-Principal Investigator), Bansal, K. (Coordinator), Lafond, S. (Co-Principal Investigator), Uppstu, P. (Co-Principal Investigator), Viitala, T. (Co-Principal Investigator), Wang, X. (Co-Principal Investigator), Wilen, C.-E. (Co-Principal Investigator), Xu, C. (Co-Principal Investigator), Zhang, H. (Co-Principal Investigator), Lu, Z. (Co-Investigator), Verma, J. (Co-Investigator), Kumar, V. (Co-Investigator), Frejborg, F. (Co-Investigator), Wang, S. (Co-Investigator), Ran, M. (Co-Investigator), Ma, X. (Co-Investigator), Yang, W. (Co-Investigator), Liang, S. (Co-Investigator), Zhang, Y. (Co-Investigator), Fan, L. (Co-Investigator), Chen, Y. (Co-Investigator), Wang, L. (Co-Investigator), Zhuang, P. (Co-Investigator), Rajan Prakash, D. (Co-Investigator), Howaili, F. (Co-Investigator), Gulshan, R. (Co-Investigator), Yadav, D. (Co-Investigator), Pathak, C. (Co-Investigator), Mustafa, R. (Co-Investigator), Rostami, L. (Co-Investigator), Jafari Dargahlou, M. (Co-Investigator), Nygård, A. (Co-Investigator) & Manasut, P. (Co-Investigator)
01/01/24 → 31/12/28
Project: Foundation
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LigninReSurf: Novel Fiber Surfaces Functionalized by Lignins Refined and Engineered from Finnish Biorefinery Processes
Xu, C. (Principal Investigator) & Eklund, P. C. (Principal Investigator)
01/01/21 → 31/12/23
Project: Industry/Business Finland
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