Stress-induced birefringence in elastomers doped with ferrofluid magnetic particles: Mechanical and optical investigation

Cleidilane Sena, C. Bailey, M. H. Godinho, J. L. Figueirinhas, P. Palffy-Muhoray, A. M. Figueiredo Neto

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)

Abstract

Magnetic nanoparticles from magnetic colloidal suspensions were incorporated in the urethane/urea elastomer (PU/PBDO) by adding to the prepolymers solution in toluene diverse amounts of magnetite grains. It is shown that ferrofluid grains can be efficiently incorporated into the elastomer according to this procedure. Mechanical and optical experiments performed show that the elastomer preparation procedure (casting) introduces a structural anisotropy on the optically isotropic sample. This fact is put in evidence by the measurements of the Young's moduli and orientation of the sample's optical axis under stress. The dependence of the phase shift of both the pure and ferrofluid-doped elastomer samples under strain is linear, and the strain-optic coefficient is show to be linear with the ferrofluid concentration.

Original languageEnglish
Pages (from-to)79-82
Number of pages4
JournalJournal Of Magnetism And Magnetic Materials
Volume300
Issue number1(SI)
DOIs
Publication statusPublished - May 2006
Event3rd Moscow International Symposium on Magnetism, MISM 2005 - Moscow State University, Moscow, Russian Federation
Duration: 26 Jun 200530 Jun 2005

Keywords

  • Birefringence
  • Elastomer
  • Ferrofluid
  • Magnetic colloid

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