Dresden 2017 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 5: Polymer Networks and Dynamics I: Elastomers and Magnetic Materials

CPP 5.8: Vortrag

Montag, 20. März 2017, 12:30–12:45, ZEU 255

Investigation of coated magnetic nanoparticles in polymer matrix via small-angle scattering methods — •Lisa Fruhner, Margarita Krutyeva, Wim Pyckhout-Hintzen, and Jürgen Allgaier — Forschungszentrum Jülich GmbH, Jülich Centre for Neutron Science (JCNS-1) & Institute of Complex Systems (ICS-1), 52425 Jülich

Bringing magnetic nanoparticles into polymer matrices allows the creation of functional nanocomposites which offer a broad application range from sensors through electronics to smart coatings and human health. It is of great importance to be able to efficiently control the encapsulation and synthetic conditions regarding the minimization of agglomerates and creation of uniform hybrid nanomaterials

By making use of sophisticated synthesis techniques we obtain spherical nanoparticles in different size ranges with a small polydispersity. These nanoparticles are coated with a crosslinked shell consisting of the matrix polymer what allows them to be easily dispersed into the matrix and protects them against agglomeration.

Investigations via small-angle scattering methods and electron microscopy reveal the presence of mostly single nanoparticles and a small amount of linear chains consisting of a few particles. These systems are used as a basis for magneto-elastomeric nanocomposites with the structure controlled by mechanical or magnetic forces.