Effects of Lignin-Derived Polycarboxylic Acids on the Properties of Waterborne Polyurethane Elastomers

Table 5

Tensile strength (σ_M) and tensile strain at break (ε_B) of LPCA-WPU elastomers with different loadings of LPCAs.

LPCA loading	σ M (MPa)	ε B (%)
0 wt%	13.48 ± 1.73	736 ± 108
1.0 wt%	14.93 ± 1.12	702 ± 84
1.5 wt%	14.25 ± 1.12	673 ± 85
2.5 wt%	18.60 ± 1.37	707 ± 31
5.0 wt%	13.96 ± 0.65	650 ± 46
7.5 wt%	12.83 ± 1.79	679 ± 99