Preparation and Characterization of Rigid Polyurethane Foams with Different Loadings of Lignin-Derived Polycarboxylic Acids

<div>Effect of LPCAs on the compressive strength of RPUFs.</div>

International Journal of Polymer Science

Figure 2: Preparation and Characterization of Rigid Polyurethane Foams with Different Loadings of Lignin-Derived Polycarboxylic Acids 