Preparation and enhanced electrorheological properties of elastomers filled with rod-shaped TiO2 particles

The morphology of dispersed particles has been proven to have a significant impact on performance of electrorheological (ER) materials, while there is a lack of relevant research on its impact on the properties of electrorheological elastomers (EREs). In this study, the TiO 2 particles with spherica...

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Bibliographic Details
Published inFrontiers in materials Vol. 10
Main Authors Ti, Gang, Fan, Yi, Tang, Jian, Niu, Chenguang, Xiong, Xiaoyan
Format Journal Article
LanguageEnglish
Published Frontiers Media S.A 18.12.2023
Subjects
elastomer
electrorheological materials
relative ER effect
rod-shaped TiO2 particles
storage modulus
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Summary:The morphology of dispersed particles has been proven to have a significant impact on performance of electrorheological (ER) materials, while there is a lack of relevant research on its impact on the properties of electrorheological elastomers (EREs). In this study, the TiO 2 particles with spherical, short rod, and long rod shape were fabricated with sol-gel method, and the EREs were prepared with these three kinds of particles as dispersion phase. Particle characterization results show that the rod-shape TiO 2 particles with larger average size exhibit a combination of anatase and brookite phase. The viscoelastic properties of three types of EREs under varying strain amplitude and shear frequency were tested. The results indicate that the long rod-shape TiO 2 particles filled EREs shows higher storage modulus G ′ and higher relative ER effect within the electric field from 0 to 3 kV/mm. The observations indicate the use of rod-shape TiO 2 particles in the form of brookite phase may help enhance the ER properties of elastomers. The investigation contributes to the designing, preparation, and application of anisotropic ERE.
ISSN:2296-8016
2296-8016
DOI:10.3389/fmats.2023.1331513