セルロースナノファイバーの噴霧乾燥による微粒子化

抄録

We successfully developed a new type of porous structured particles via self-assembly of TEMPO-oxidized cellulose nanofibers (TOCNF) and magnetic nanoparticles (Fe₃O₄) as building blocks by spray-drying process. The TOCNF/Fe₃O₄ composite porous particles possessed unique macro–meso–microporous structures with a high surface area (15 m²/g) and a highly negative charge (ζ potential = −55 mV). The Fe₃O₄ nanoparticles played an important role in increasing the specific surface area by inhibiting aggregation of the TOCNF. The TOCNF/Fe₃O₄ composite porous particles allowed excellent mass transfer of lysozyme, which led to high adsorption capacities of > 950 mg/g, rapid equilibrium.