Liquid crystalline networks composed of rigid spacerless monomers: kinetics of network formation, anisotropic structure and mechanical properties
✍ Scribed by Dietrich Braun; Gerhard Frick; Martin Grell; Michael Klimes; Joachim H. Wendorff
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 513 KB
- Volume
- 196
- Category
- Article
- ISSN
- 1022-1352
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Rigid isotropic and anisotropic networks were formed by photopolymerization of spacerless liquid crystalline diacrylates and of mixtures of these diacrylates with spacerless monoacrylates in the isotropic and liquid crystalline state. The total conversion of double bonds and the orientational order is strongly restricted for the case of network formation based solely on the diacrylates due to steric constraints. These constraints are considerably relaxed in networks formed from mixtures of di‐and monoacrylates. Such networks display a well defined orientational order. The dynamical mechanical properties were found to correspond to those found for networks based on diacrylates with flexible spacers, the anisotropy of the mechanical properties of oriented networks is weak.