Preparation of magnetic cellulose composites using ionic liquids

摘要

Cellulose-magnetite composites have been prepared by suspension and dispersion of magnetite particles in a homogenous ionic liquid solution of cellulose,followed by regeneration into water,enabling the preparation of magnetically responsive films,flocs,fibers,or beads.The materials prepared were ferromagnetic,with a small superparamagnetic response,characteristic of the initial magnetite added.X-ray diffraction data indicated that the magnetite particles were chemically unaltered after encapsulation with an average particle size of approximately 25 nm.