This presentation spotlights two current examples of design and fabrication of cellulosics-inorganic hybrid materials. In the first example, a biomimetic mineralization was carried out using chiral nematic liquid crystalline gels of (ethyl)cellulose (EC)/poly(acrylic acid) (PAA) and (hydroxypropyl)cellulose (HPC)/PAA as a scaffolding medium for deposition of calcium phosphate. The EC/PAA and HPC/PAA networks were prepared in film form from EC and HPC lyotropics, respectively, by polymerization of acrylic acid as the solvent component. We successfully obtained colored, mineral-hybridized polymer composites. The inorganic hybridization remarkably enhanced thermal and mechanical performance of the optically functionalized composite films. In the second example, magnetic functional materials were fabricated in film form from cellulose nanocrystal (CNC)/iota-carrageenan (i-Car) gelatinous composites via in-situ synthesis of iron oxides therein and subsequent drawing of the inorganic-polysaccharides hybrids. The hybrid films displayed anisotropic response to external magnetic field, due to orientation of the array of ferrite nanoparticles to the draw direction.<br/>

New design and fabrication of optical and magnetic functional films by ordered cellulosics-inorganic hybridization

251st National Meeting (2016)

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