Optical, Magnetic and Dielectric Properties of Non-Liquid Crystalline Elastomers Doped with Magnetic Colloids
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| Format: | Artículo científico |
| Sprache: | en |
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Sociedade Brasileira de Física
2005
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| _version_ | 1876432278859546624 |
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| author | M.H. Godinho |
| author_facet | M.H. Godinho |
| contents | Optical, Magnetic and Dielectric Properties of Non-Liquid Crystalline Elastomers Doped with Magnetic Colloids M.H. Godinho T. Toth-Katona P. Palffy-Muhoray A.M. Figueiredo Física, Astronomía y Matemáticas Magnetic nanoparticles from magnetic colloidal suspensions were incorporated in the urethane/urea elastomer(PU/PBDO) by swelling fully crosslinked elastomer samples with a toluene and ferrofluid mixture. It is shownthat ferrofluid grains can be efficiently incorporated into the matrix of elastomers. The dependence of the birefringenceof both the pure and ferrofluid-doped elastomer samples on strain is linear. The ratio of birefringenceto strain of the ferrofluid-doped samples is greater than that of the pure elastomer samples, indicating that ferrofluidgrains are oriented by the strained polymer network. We propose that this strain-induced orientation isdue to the shape anisotropy of the nanoparticles. 2005 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46435115 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.1 Vol.35 |
| format | Artículo científico |
| id | redalyc_46435115 |
| institution | Redalyc |
| language | en |
| publishDate | 2005 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Optical, Magnetic and Dielectric Properties of Non-Liquid Crystalline Elastomers Doped with Magnetic Colloids M.H. Godinho Física, Astronomía y Matemáticas Optical, Magnetic and Dielectric Properties of Non-Liquid Crystalline Elastomers Doped with Magnetic Colloids M.H. Godinho T. Toth-Katona P. Palffy-Muhoray A.M. Figueiredo Física, Astronomía y Matemáticas Magnetic nanoparticles from magnetic colloidal suspensions were incorporated in the urethane/urea elastomer(PU/PBDO) by swelling fully crosslinked elastomer samples with a toluene and ferrofluid mixture. It is shownthat ferrofluid grains can be efficiently incorporated into the matrix of elastomers. The dependence of the birefringenceof both the pure and ferrofluid-doped elastomer samples on strain is linear. The ratio of birefringenceto strain of the ferrofluid-doped samples is greater than that of the pure elastomer samples, indicating that ferrofluidgrains are oriented by the strained polymer network. We propose that this strain-induced orientation isdue to the shape anisotropy of the nanoparticles. 2005 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46435115 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.1 Vol.35 |
| title | Optical, Magnetic and Dielectric Properties of Non-Liquid Crystalline Elastomers Doped with Magnetic Colloids |
| topic | Física, Astronomía y Matemáticas |
| url | https://www.redalyc.org/articulo.oa?id=46435115 |