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Bleached Pulp - Emission Free Pulping

Researcher Spotlight: Khashayar Vaezi

The Emission Free Pulping program is excited to share some insights into the research by doctoral researcher Khashayar Vaezi at the University of Oulu. Khashayar's work focuses on understanding the role of lignin in high-yield fiber property formation and aims to innovate new chemical methods to enhance fiber quality without heavily modifying the lignin content.


The research employs advanced Fluorescence Lifetime Imaging Microscopy (FLIM) normally used in pharmaceutical research, Scanning Electron Microscopy (SEM), and Nuclear Magnetic Resonance (NMR) to study the distribution and chemical properties of lignin within fibers. By using these cutting-edge techniques, the researchers can delve deeper into how lignin interacts within high-lignin content fibers and how slight chemical modifications can enhance fiber properties such as strength and binding capacity.


One of the key aspects of Khashayar's research is not just the partial removal of lignin but also its chemical modification with thiourea to improve the mechanical properties of fibers. This approach could lead to the development of high-yield fibers that are not only strong but also more sustainable.


We are excited to see how this work progresses and its potential impact on the future of sustainable pulping!



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