A tin-containing liquid crystalline polymer with two glass temperatures |
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Authors: | Uwe Emmerling Jurgen Lindau Siegmar Diele Johannes Werner Horst Kresse |
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Affiliation: | Martin-Luther-Universitat Halle-Wittenberg |
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Abstract: | A tin-containing liquid crystalline side group polymer was synthesized and characterized. Two glass transitions were detected by calorimetric investigations. The X-ray pattern corresponds to a smectic C order of the side groups and a disordered isotropic main chain. Dielectric measurements show two relaxation ranges which are influenced by the glass transitions and a fast local process. The low frequency mechanism can be related to the reorientation of the side groups and the higher glass transition temperature. The second is connected with the α-relaxation of the main chain and freezes in at lower temperatures. |
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Keywords: | dopants fast response time fluorinated biphenyl ether nucleophilic aromatic substitution |
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