Synthesis, characterization and properties of liquid crystalline bismaleimides containing phenylbenzoate mesogens and polymethylenic spacers
| Autor: | Kémira Kallal-Bartolomeo, Jean-Claude Milano, Jean-Louis Vernet, Bernard Gallot |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Materials science
Polymers and Plastics Liquid crystalline Mesogen Organic Chemistry Isotropy Condensed Matter Physics Chloride Isothermal process Characterization (materials science) chemistry.chemical_compound chemistry Phase (matter) Polymer chemistry Materials Chemistry medicine Physical and Theoretical Chemistry Methylene medicine.drug |
| Zdroj: | Macromolecular Chemistry and Physics. 201:2276-2281 |
| ISSN: | 1521-3935 1022-1352 |
| DOI: | 10.1002/1521-3935(20001101)201:17<2276::aid-macp2276>3.0.co;2-z |
| Popis: | This paper describes the synthesis and characterization of four bismaleimides containing a phenylbenzoate mesogenic group and differing by the length of the polymethylenic spacers. They were prepared by reacting 4-maleimidobenzoyl chloride with diphenols containing methylene bridges. The cured resins are stable up to 380°C in air. Smectic liquid crystalline behavior was observed in those materials. Two of them could be crosslinked in either smectic or isotropic phase. We have also found that the degree of cure can affect the formation of a liquid crystalline phase. Isothermal cure of initially isotropic material can form a material that exhibits a liquid crystalline phase. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text