In an interview, Ayumu Tagami, PhD student at KTH Royal Institute of Technology, Fibre and Polymer Technology / Wood Chemistry and Pulp Technology, with Chemical Today magazine talks about his work towards increased use of renewable wood-based resources for a sustainable future.
Tagami also works at Nippon Paper Industries Co Ltd as a Research Laboratory Superintendent.
Research insight.
The main purpose of our project is to investigate the correlation between average molecular weight (Mw) and structural features for kraft lignin fractions extracted by four environmentally friendly chemicals - Ethyl acetate, Ethanol, Methanol and Acetone.
We compared softwood and hardwood lignoboost kraft lignin with respect to the extraction yields, Mw’s, antioxidant properties, the heat values and adsorption property of obtained fractions. The properties of lignin fractions obtained by solvent extraction were compared to the fraction obtained by the ultrafiltration of weak industrial black liquor from kraft cooking of softwood (CF lignin) with ceramic membranes.
Chemical modification (including solvent extraction) increase the reactivity. So we are testing lignin fractions for various applications (tunicate cellulose-lignin films, pyrolysis to produce useful monomers, heat capacity, sorption properties etc).
Read More: Carving a sustainable future
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