Using lignin to modify starch-based adhesive performance

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Abstract

Unmodified kraft lignin was used to create a starch-based adhesive via the Stein Hall process. Lignin up to 35 wt% was used in several formulations. Lignin was incorporated in both the carrier and slurry portions of the formulations and the effect on adhesive strength and water resistance was studied. The addition of lignin resulted in a significant increase in adhesive strength when the lignin was added solely to the slurry portion. When lignin was added solely to the carrier portion, the adhesive strength decreased. Other formulations, where lignin was present in both the carrier and slurry portions, showed moderate increases in adhesive strength. Finally, the addition of lignin increased the water-resistance of the adhesive bond in the paperboard.

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Nasiri, A., Wearing, J., & Dubé, M. A. (2020). Using lignin to modify starch-based adhesive performance. ChemEngineering, 4(1), 1–11. https://doi.org/10.3390/chemengineering4010003

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