can be exchanged with D,O. Thus, two insertions of two adamantylidenes into two different 0 -H bonds of fl-CD have taken place. The absolute amount of OH insertion products 4 B-CD and 5 . 8-CD detected by FAB mass spectrometry (Scheme 1 ) is not yet known. Since these compounds could not be found by
Liquid Crystalline Polymers
β Scribed by Prof. Dr. Heino Finkelmann
- Publisher
- John Wiley and Sons
- Year
- 1987
- Tongue
- English
- Weight
- 959 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0044-8249
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π SIMILAR VOLUMES
News could, in principle, be polaron formation. However, the absence of a noticeable temperature dependence argues against this notion. Comparison with the p(T) behavior of polymeric systems above T, suggests instead a common underlying principle. It is known that molecular motion is turned on upon
The rheological characterization of two commercial thermotropic liquid crystalline polymers based on poly(ethylene terephthalate) (PET) and para-hydroxybenzoic acid (PHB) is carried out. The thermal transitions determined by DMTA are explained by the random character of these copolyesters, in compar
Large increases in shear stress upon application of a 2.0 kV/mm electric field were observed in homogeneous fluids composed of polysiloxane-based liquid crystalline polymers (LCPs) in dimethyl silicone at a shear rate of 200 s-\*. The increase was largest (about 3,000 Pa at 50Β°C) with LCP consisting