Fabrication of Aromatic-Aliphatic Aminoketone Polymers with Terminal Fluorine Groups
| Autor: | Stefan Spange, Susann Anders, Lysann Kaßner, Wolfgang Dr Schrepp, Walter Hoyer, Andreas Pohlers |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Condensation polymer
Polymers and Plastics medicine.drug_class Organic Chemistry Michler's ketone chemistry.chemical_element Condensed Matter Physics Catalysis Aminoketone Crystallinity chemistry.chemical_compound chemistry Nucleophilic aromatic substitution Diamine Polymer chemistry Materials Chemistry Fluorine medicine Physical and Theoretical Chemistry |
| Zdroj: | Macromolecular Chemistry and Physics. 211:1550-1558 |
| ISSN: | 1022-1352 |
| Popis: | A procedure for synthesis aromatic-aliphatic PAK, completely functionalized with p-fluorophenyl terminal groups, is presented. This synthesis uses the nucleophilic aromatic substitution of DFB with various secondary aliphatic diamines [CH 3 -NH-(CH 2 ) m -NH-CH 3 ] (m = 3, 6, and 8) and cesium fluoride as the base catalyst in the melt. The linearity and the complete functionalization of the PAK compounds with p-fluorophenyl terminal groups are demonstrated with the aid of MALDI TOF mass spectrometry. PAK compounds are semi-crystalline as shown by WAXS and DSC measurements. The degree of crystallinity ranges between 2 and 25%. Nucleophilic aromatic substitution reactions in the fluorine end groups are demonstrated by reaction of PAK (m = 6) with the strong S-nucleophile mercaptoacetic acid. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text