Structuring of magnetic particle doped biopolymers by magnetica

点击翻译按钮获取中文摘要

Aim of the project is remote control of the properties of biocompatible hybrid materials consisting of meltable biopolymers (especially dextran esters) and magnetic nanoparticles by means of interaction between matrix and particles using magnetic fields. It will be investigated how a local enrichment of particles and a structural i.e. magnetic anisotropy, respectively, can be generated. By such an anisotropy or particle enrichment near the surface surface properties can be influenced in dependence on the structure of the dextran ester. That leads to macroscopical properties relevant for applications, like the specific absorption rate (heating behavior in an AC-magnetic field), roughness, wettability etc. Moreover It will be investigated if a reorientation of matrix material (phase separation, crystallization) takes place or can be induced. The composite samples will be characterized by optical and Raman spectroscopy, electron microscopy, magnetic methods and measurement of the surface energy. In case of a successful implementation of the concept a treatment of biofilms or cells is possible.