Reorientation of a liquid-crystalline side chain polymer

Roth, H.-K.

doi:10.1080/02678299208028967

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“…E and B 0 denote the orientation in the electric and magnetic field, respectively. g 1 has been calculated using eqs (7) and (10)…”

Section: Resultsmentioning

confidence: 99%

Reorientation of a liquid crystalline side‐chain polymer in electric and magnetic fields investigated by solid‐state 1H‐NMR

Holstein

Bender

Winkler

et al. 1998

Polym. Adv. Technol.

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With a capacitor placed in the radio frequency coil of an nuclear magnetic resonance spectrometer it is possible to investigate reorientational processes in liquid crystalline polymers induced by the static magnetic field of the spectrometer and a dynamic electric field between the capacitor plates.In the nematic phase, the alignment of the director is a result of the interplay between two competing fields. The director can be rotated in every desired angle by the simultaneous application of the electric field. The dynamics of the process depends strongly on the strength of the electric field and on the temperature. The arrangement allows the in situ measurement of switching times, of the rotational vicosity g 1 , etc.

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“…E and B 0 denote the orientation in the electric and magnetic field, respectively. g 1 has been calculated using eqs (7) and (10)…”

Section: Resultsmentioning

confidence: 99%