Impact of Colloidal Stability on Cellulose Nanocrystals Self-Ordering in Thin Films

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Sulfuric acid hydrolyzed cellulose nanocrystals (CNC) display interesting self-ordering properties in water. Applications include water casting of optically active CNC- based materials and composites. N,N-dimethylformamide (DMF)-cast materials do not display as good properties. Variations in CNC colloidal stability between water and DMF were proposed as an explanation for these behaviors. Here, we monitored the variations in optical properties of thin films cast from water, DMF, and their binary mixtures. Results are interpreted in light of the colloidal stability of CNC in these media.

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Journal: TechConnect Briefs
Volume: TechConnect Briefs 2019
Published: June 17, 2019
Pages: 61 - 64
Industry sector: Advanced Materials & Manufacturing
Topicss: Advanced Materials for Engineering Applications, Materials Characterization & Imaging
ISBN: 978-0-9988782-8-7