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Properties of Polydimethylsiloxane and Magnetoactive Polymers with Electroconductive Particles
Author(s) -
Prem Nina,
Vega Jhohan Chavez,
Böhm Valter,
Sindersberger Dirk,
Monkman Gareth J.,
Zimmermann Klaus
Publication year - 2018
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201800222
Subject(s) - polydimethylsiloxane , materials science , polymer , carbon black , fabrication , graphite , electrical resistivity and conductivity , electrical conductor , composite material , elastomer , conductive polymer , nanotechnology , electrical engineering , medicine , natural rubber , alternative medicine , pathology , engineering
Abstract Magnetoactive polymers are intelligent materials whose mechanical and electrical characteristics are reversibly influenced by external magnetic stimuli. They consist of a highly elastic polymer matrix in which magnetically soft and/or hard particles are distributed by means of special fabrication processes. In addition to ferromagnetic particles such as carbonyl iron powder, electrically conductive particles may also be embedded into the polymer matrix. After characterizing a range of compounds, this work focuses on a comparison of the electrical properties and the suitability of various materials for applications, with particular emphasis on integration into 3D and 6D printing processes. 6D printing is based on the selective positioning of particles in a 3D polymer matrix with a further three degrees of freedom for a graduated dispersion of the particles at certain points and in desired directions. The aim is therefore to ensure that the polymers containing electroconductive tracks have the best possible electrical properties, that is, low resistivity but are still capable of being printed. A comparison between the traditionally used compounds containing graphite and carbon black is made for the first time. This latter is found to be greatly superior both in terms of electrical conductivity and applicability to 3D printing and 6D printing.