| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1313630 | Journal of Fluorine Chemistry | 2013 | 8 Pages |
New pyridine-containing polyimides based on fluorinated γ-Х-pyridylenediamines (X = H, Cl, NH2, O-linkage) and dianhydride 6FDA were prepared by one-step polycondensation in benzoic acid melt. Molecular weight of the polymers enlarges with an increase of nucleophilicity of the pyridylenediamines and solubility of the macromolecules in the reaction medium. 4,4′-Oxydianiline was used as a co-monomer to prepare high-molecular pyridine-containing PI films with good mechanical properties. The polyimides and co-polyimides obtained are soluble in amide solvents, have good thermal and thermooxidative characteristics. Parameters of the polyimides pyrolysis, which provide consecutive elimination of different elements, were found.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► New polyimides (Py-PIs) based on fluorinated γ-Х-pyridylenediamines were prepared. ► Oxydianiline co-monomer was used to prepare PI films with good mechanical properties. ► Py-PIs are soluble in amide solvents and have good thermooxidative characteristics. ► Pyrolysis parameters for consecutive elimination of F, Cl, H, and N were found.
