Adhesion of Technical Lignin-Based Non-Isocyanate Polyurethane Adhesives for Wood Bonding
Jaewook Lee,
Byung-Dae Park,
Qinglin Wu
Abstract:Lignin is the most abundant aromatic natural polymer, and receiving great attention in replacing various petroleum-based polymers. The aim of this study is to investigate the feasibility of technical lignin as a polyol for the synthesis of non-isocyanate polyurethane (NIPU) adhesives to substitute current polyurethane (PU) adhesives that have been synthesized with toxic isocyanate and polyols. Crude hardwood kraft lignin (C-HKL) was extracted from black liquor from a pulp mill followed by acetone fractionation… Show more
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