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

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left"></td><td class="align_center">Acid-precipitated lignin</td><td class="align_center">LPCAs</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left"><i>w</i> (COOH)</td><td class="align_center">9.02%</td><td class="align_center">11.10%</td></tr><tr><td class="align_left"><i>M</i><sub>n</sub></td><td class="align_center">2.91 × 10<sup>4</sup></td><td class="align_center">1.23 × 10<sup>4</sup></td></tr><tr><td class="align_left"><i>M</i><sub>w</sub></td><td class="align_center">3.48 × 10<sup>4</sup></td><td class="align_center">1.25 × 10<sup>4</sup></td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The titration analysis and GPC characterization results of acid-precipitated lignin and LPCAs.</div>

International Journal of Polymer Science

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Table 1

Table 1: Effects of Lignin-Derived Polycarboxylic Acids on the Properties of Waterborne Polyurethane Elastomers 