White Magnetic Paper with Zero Remanence Based on Electrospun Cellulose Microfibers Doped with Iron Oxide Nanoparticles

Nanomaterials

G. Papaparaskeva¹  M.M. Dinev¹  T. Krasia-Christoforou¹  V. Socoliuc²  F. Balanean²  S.A. Porav³  R. Turcu³ 

[1] Department of Mechanical and Manufacturing Engineering, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus;Laboratory of Magnetic Fluids, Center for Fundamental and Advanced Technical Research, Romanian Academy—Timisoara Branch, M. Viteazul Ave. 24, 300223 Timisoara, Romania;National Institute for Research and Development of Isotopic and Molecular Technologies, Donat 67-103, 400293 Cluj-Napoca, Romania;

关键词: magnetic paper;    magnetic white paper;    superparamagnetic paper;    microfiber;    cellulose;    electrospinning;    iron oxide magnetic nanoparticles;   

DOI  :  10.3390/nano10030517

来源: DOAJ

【 摘 要 】

The preparation procedure of zero magnetic remanence superparamagnetic white paper by means of three-layer membrane configuration (sandwiched structure) is presented. The cellulose acetate fibrous membranes were prepared by electrospinning. The middle membrane layer was magnetically loaded by impregnation with an aqueous ferrofluid of 8 nm magnetic iron oxide nanoparticles colloidally stabilized with a double layer of oleic acid. The nanoparticles show zero magnetic remanence due to their very small diameters and their soft magnetic properties. Changing the ferrofluid magnetic nanoparticle volume fraction, white papers with zero magnetic remanence and tunable saturation magnetization in the range of 0.5−3.5 emu/g were prepared. The dark coloring of the paper owing to the presence of the black magnetite nanoparticles was concealed by the external layers of pristine white cellulose acetate electrospun fibrous membranes.

【 授权许可】

Unknown