Phenolation to Improve Hardwood Kraft Lignin for Wood Adhesive Application
Li-Yuan Liu,
Wan-Shuan Chiang,
Hou-min Chang
et al.
Abstract:Lignins, naturally occurring aromatic polymers with phenylpropane units, are promising bio-based alternatives for petroleum-based products. Resole-type phenol formaldehyde (PF) adhesive is commonly used in wood composites requiring durability and weather-proofness. However, PF adhesive is a petroleum-based product. The objective of this study is to transform the low-reactivity hardwood kraft lignin (KL) as the phenol substitute in the PF adhesive formulation by acidic phenolation. The variations in the molecul… Show more
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