- Synthesis of New Stilbene-Based Polycarbonates
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A series of polycarbonates with stilbene mesogenes has been prepared and characterized, expanding upon past work with stilbene-based polyesters and polyethers.It has been found that the stilbene mesogen, mono- or di-substituted with methyl or ethyl groups, significantly affects polymer morphology.Polycarbonates containing stilbene mesogens have been studied by differential calorimetry, polarized microscopy and X-ray diffraction.Methyl substituted stilbenes are semicrystalline and appear to be liquid crystalline, whereas ethyl substituted stilbenes are amorphous.Disubstitution lowers the transition temperatures from those values observed for monosubstituted stilbenes. - Keywords: stilbene, liquid crystal, polymer, thermotropic, amorphous, diethyl stilbestrol, x-ray diffraction, DSC, substituents
- Bluhm, A. L.,Cebe, P.,Schreuder-Gibson, H. L.,Stapler, J. T.,Yeomans, W.
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p. 123 - 140
(2007/10/02)
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