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Lignin-Based Polyurethane (PU) Resins and Foams

  • Chunbao XuEmail author
  • Fatemeh Ferdosian
Chapter
Part of the Green Chemistry and Sustainable Technology book series (GCST)

Abstract

This chapter overviews the production and properties of lignin-based polyurethane (LPU) for various applications such as elastomers, coatings, adhesives, flexible foams, and semi-rigid or rigid foams. Lignin with hydroxyl groups on its structure could be used as a substitute for polyol in the synthesis of polyurethane. Lignin can be incorporated in polyurethane without pre-treatment or with chemical modifications, e.g., oxypropylation, esterification, etherification reactions, and depolymerization. Chemical modifications of lignin produce modified lignin with enhanced reactivity, which enables synthesis of LPU at a higher biosubstitution ratio, and the resulted LPU products demonstrated acceptable performance in various industrial applications.

Keywords

Lignin-based polyurethane (LPU) Elastomers Coatings Adhesives Flexible foams Semi-rigid or rigid foams Chemical modifications Oxypropylation Esterification Etherification reactions Depolymerization 

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© Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  1. 1.Department of Chemical and Biochemical EngineeringUniversity of Western OntarioLondonCanada

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