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Quizzed article | REF: RE408 V1

Development of biobased polyurethanes non-isocyanate (NIPUs) for wood adhesives

Author: Siham AMIROU

Publication date: August 10, 2023 | Lire en français

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    Overview

    ABSTRACT

    Conventionally, polyurethanes are synthesized by step growth polymerization of diols (or polyols) and diisocyanates (or polyisocyanates). The variety of isocyanates and polyols makes it possible to generate a wide range of materials with different properties. Despite the many advantages of polyurethanes, their synthesis can raise issues due to the toxicity of isocyanates. In order to limit the risks for producers and users, non-isocyanate polyurethanes have been developed. The synthesis of such non-isocyanate polyurethanes, as well as properties and applications, mainly as adhesives for wood, are described in detail in this article.

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    AUTHOR

    • Siham AMIROU: Research engineer - Laboratory for the study and research of wood materials (LERMAB) - University of Lorraine, Épinal, France

     INTRODUCTION

    Polyurethane adhesives (PUs) are widely used in various industries. Due to the chemical versatility of PUs, there are many different types of PU adhesive . These are generally synthesized by a polyaddition reaction between polyols and diisocyanates.

    Urea-formaldehyde and phenol-formaldehyde resins, commonly used in wood adhesives , are highly sensitive...

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    KEYWORDS

    wood   |   adhesives   |   Polyurethane   |   non-isocyanate

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    Development of biobased isocyanate-free polyurethanes (NIPUs) for wood adhesives
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