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The phase behaviour and the ferroelectric properties of liquid-crystalline side group polyacrylates containing an (R)-4″(1-methylheptyloxy)-4′-biphenylyloxycarbonyl-4-phenoxy moiety are compared with the properties of their monomers. A S*C phase polymorphism including monolayer and bilayer structures was found for the polymers. Some of the S*C subphases, consisting of smectic mono- or bi-layers, do not exhibit ferroelectric properties. These unusual properties do not exist for the corresponding monomeric acrylates. Therefore, one has to take into account that the polymer chain exerts a strong influence on the phase behaviour and the ferroelectric properties.
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Kühnpast et al. (1993) studied this question.
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