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Meeting 2024 TMS Annual Meeting & Exhibition
Symposium Functional Nanomaterials 2024
Presentation Title Unravelling the Governing Factors for Cholesteric Liquid Crystal Self-assembly of Polysaccharides
Author(s) Cecile Chazot, Simona Fine, Eleanor Grosvenor
On-Site Speaker (Planned) Cecile Chazot
Abstract Scope Thanks to their earth abundance and their ability to self-assemble in photonic crystals, cholesteric polysaccharides have been investigated as the basis for functional optical nanomaterials. However, the effects of polysaccharide chemistry and solvent-polymer interaction on the formation of the cholesteric phase remain understudied. In this talk, we explain how different thermodynamic and chemical factors influence the self-assembly and optical properties of cholesteric mesophases constructed from suspensions of polysaccharides, such as cellulose ethers. Through a systematic data analysis framework we developed, we elucidate structure-property relationships linking solubility, viscosity, and hydrogen bonding to the cholesteric pitch and resulting optical properties. Then, we discuss how chemical factors such as molecular weight and repeat-unit chemistry affect kinetics of liquid-crystalline self-assembly. These relationships are expected to assist in the large-scale deployment of polysaccharide-based functional materials with direct optical assessment of temperature, mechanical strain, or humidity.
Proceedings Inclusion? Planned:
Keywords Biomaterials, Polymers, Sustainability

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