Li, Ya-Yu, et al. “Preparation, Properties, and Mechanism of Anionic and Cationic Cellulose Nanocrystals Waterborne Polyurethane Composite Films”. BioResources, vol. 18, no. 1, Nov. 2022, pp. 447-64, https://ojs.bioresources.com/index.php/BRJ/article/view/22229.