Preparation of iron—polysiloxane vertically ordered microneedles from a suspension of iron microparticles in liquid silicone rubber

Resumo

A simple method for the preparation of the vertically located flexible iron—polysiloxane magnetic needles up to 12 mm long by the self-organization of iron carbonyl microparticles in a solution of thermally cured polydimethylsiloxane rubber in a vertical magnetic field is proposed. The generated structures withstand heating to 300 °С with an appreciable loss of flexibility. Their properties are investigated by scanning electron, atomic force, and optical microscopy.