Solvent-Free Kraft Lignin and Silsesquioxane Modification for Water-Based Superhydrophobic Wood Coating
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United States of America Patent
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Mar 27, 2025
app pub date -
Sep 17, 2024
filing date -
Sep 17, 2024
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Abstract
A novel superhydrophobic sustainable coating material was fabricated from kraft lignin polymerized with silsesquioxane through polycondensation reaction. The reaction under the conditions of pH 11, 60° C., and 48 hours, and a 1:1.2 mmol ratio of SKL/WAPMSS were found to be the optimum for obtaining the polymer, WSL10 with higher Si content. During powder wettability investigation, the optimised sample demonstrated a superhydrophobicity with null mass gain. This characteristic of the copolymer is due to low surface energy and spherical molecule shape, which was the result of an abundance of Si—O—C/Si—O—Si bonds.
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