1. Magnetic responsive cellulose nanocomposites Sonja Päärnilä 8.3.2016

2. Production of magnetic fibers Coaxial wet spinning Applications Overview

3. Production of magnetic fibers Lumen-loading Physical Magnetic NP + cellulose pulp Vigorous stirring Washing Heterogeneous composite In situ co-precipitation Chemical Iron ions + cellulose pulp Vigorous stirring NaOH  Fe 3 O 4 Better control of magnetic properties Modification: stepwise dipping process Liu et al. 2013

4. Fibers with coaxial wet spinning Kou et al. 2014

5. Other morphologies Films Microspheres Hydrogels and aerogels A) B) Liu et al. 2013

6. Applications Magnetic imaging Magnetic shielding Lutz et al. 2006 Sonehara et al. 2009

7. Applications FiltersCell and protein separation Other applications: magnetic paper, electromagnetically driven printing, sensors, information storage etc. Munaweera et al. 2014 Pinchuk et al. 1994

8. Lumen-loading and in situ Coaxial wet spinning one possible method to produce fibers Many applications for magnetic nanocomposites Conclusions

9. Kou, L. & Huang, T. & Zheng, B. & Han, I. & Zhao, X. Gopalsamy, K. & Sun, H. & Gao, C. 2014. Coaxial wet-spun yarn supercapacitors for high-energy density and safe wearable electronics. Nature communications. Vol 5. Pp. 1-10. Liu, S. & Luo, X. & Zhou, J. 2013. Magnetic responsive cellulose nanocomposites and their applications. Cellulose – medical, pharmaceutical and electronic applications. Pp. 105-124. Lutz, J.F. & Stiller, S. & Hoth, A. & Kaufner, L. & Pison, U. Cartier, R. 2006. One-pot synthesis of PEGylated ultrasmall iron-oxide nanoparticles and their in vivo evaluation as magnetic resonance imaging contrast agents. Vol 7. Pp. 3132-3138. Munaweera, I. & Aliev, A. & Balkus, K.J. 2014. Electrospun cellulose acetate-garnet nanocomposites magnetic fibers for bioseparations. ACS Applied materials and interfaces. Vol 6. Pp. 244-251. Pinchuk, L.S. & Markova, L.V. & Gromyko, Yu.V. & Markov, E.M. & Choi, U.S. 1994. Polymeric magnetic fibrous filters. Journal of materials processing technology. Vol 55. Pp. 345-350. Sonehara, M. & Noguchi, S. & Kurashina, T. & Sato, T. & Yamasawa, K. & Miura, Y. 2009. Development of an electromagnetic wave shielding textile by electroless Ni-based alloy plating. IEEE transactions on magnetics. Vol 45:10. Pp. 4173-4175. References