The influence of crosslinkers and magnetic particle distribution along the filament backbone on the magnetic properties of supracolloidal linear polymer-like chains

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:497

Article

Mostarac, D.¹  Vaughan, L.¹  Sanchez, P. A.^2,3  Kantorovich, S. S.^1,2 

[1] Univ Vienna, Sensengasse 8, Vienna, Austria

[2] Ural Fed Univ, Lenin Av 51, Ekaterinburg, Russia

[3] Helmholz Zentrum Dresden Rosendorf, Bautzner Landstr 400, D-01328 Dresden, Germany

关键词: Supracolloidal magnetic polymers;    Langevin dynamics simulations;    Crosslinking methods;    Magnetisation;   

DOI  :  10.1016/j.jmmm.2019.166029

来源: Elsevier

【 摘 要 】

Diverse polymer crosslinking techniques allow the synthesis of linear polymer-like structures whose monomers are colloidal particles. In the case where all or part of these colloidal particles are magnetic, one can control the behaviour of these supracolloidal polymers, known as magnetic filaments (MFs), by applied magnetic fields. However, the response of MFs strongly depends on the crosslinking procedure. In the present study, we employ Langevin dynamics simulations to investigate the influence of the type of crosslinking and the distribution of magnetic particles within MFs on their response to an external magnetic field. We found that if the rotation of the dipole moment of particles is not coupled to the backbone of the filament, the impact of the magnetic content is strongly decreased.

【 授权许可】

Free