Abstract
Fluorine-containing poly(aryl ether 1,3,4-ozadiazole)s were synthesized by the nucleophilic aromatic substitution reaction of 2,5-bis(2,3,4,5,6- pentafluorophenyl)1,3,4-oxadiazole and various bisphenols in the presence of potassium carbonate. The polymerizations were carried out at 30°C in l-methyl-2-pyrrolidinone to avoid the gelation caused by a crosslinking reaction at para and ortho carbons to the 1,3,4-oxidiazole ring. The obtained polymers were all pom-connected linear structures. The obtained fluorine-containing poly(aryl ether 1,3,4-ozadiazole)s showed excellent solubility and afforded tough, transparent films by the solution-casting method. They also exhibited a high glass transition temperature depending on the molecular structure, and the glass transition temperature could be controlled by the bisphenols in the range of 157-257°C. They showed good thermal stability and excellent hydrophobicity due to the incorporation of the 2,3,5,6-tetrafluoro-l,4-phenylene moiety.
Original language | English |
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Pages (from-to) | 2855-2866 |
Number of pages | 12 |
Journal | Journal of Polymer Science, Part A: Polymer Chemistry |
Volume | 45 |
Issue number | 14 |
DOIs | |
Publication status | Published - Jul 15 2007 |
Keywords
- Fluoropolymers
- Heteroatom-containing polymers
- High performance polymers
- Solubility
- Thermal stability
ASJC Scopus subject areas
- Polymers and Plastics
- Organic Chemistry
- Materials Chemistry