Electro-rheological effect of blends composed of two liquid crystalline materials: composition dependence

Kaneko, Kosuke; Mandai, Atsuhiko; Kamei, Yuichi; Miwa, Yusuke; Nakamura, Naotake

doi:10.1080/02678291003717008

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“…We have attempted to develop LCs for novel rheological applications [9][10][11][12][13][14]. After Winslow discovered the electro-rheological (ER) effect, in which viscosity is controlled by the strength of an applied electric field [15], a number of ER fluids have been studied as smart materials for industrial use [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

The phase transition behaviour and electro-rheological effect of liquid crystalline siloxane dimers

et al. 2011

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Symmetrical liquid crystalline dimers have been synthesised, composed of rod-like mesogenic units with polar groups and a siloxane core of varying length in the central region. All the dimers containing siloxane units have been shown to exhibit a smectic A phase, confirmed by polarising optical microscopy (POM), differential scanning calorimetry (DSC) and X-ray diffraction (XRD). Rheological properties under an applied electric field were investigated by rotational rheometer. The influence of the siloxane core length on rheological properties has been investigated, and in addition the behaviour of the liquid crystalline dimers in the smectic A phase under an applied electric field has been observed by POM.

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