Utilizing Lignin for Polyurethane Production

Date:8 Sep 2020

Application

• Bio-based Polyurethanes: Lignin-based polyols can replace petroleum-derived polyols in the production of eco-friendly polyurethanes, promoting sustainability in various polyurethane products.

Description

This project explores the use of technical lignin, a waste byproduct from the pulp and paper industry, as a renewable alternative to petroleum-based polyols in the production of bio-based polyurethanes (PUs). The study reviews methods to convert lignin into liquid polyols for PU synthesis and examines non-isocyanate polyurethanes (NIPUs) for safer, biodegradable products. It highlights challenges in lignin characterization and processing and advocates for advancements in depolymerization to improve lignin’s use in sustainable polymer production. The goal is to replace petrochemical components, promoting a circular economy.

 

 

Pathway Description:

The project involves extracting lignin from pulp and paper industry waste and converting it into liquid polyols through liquefaction. These lignin-based polyols are then used to replace petroleum-derived polyols in the production of polyurethanes (PUs). The research also explores creating non-isocyanate polyurethanes (NIPUs) by using lignin to replace isocyanates. This process aims to produce eco-friendly, biodegradable, and sustainable polymer materials.