Synthesis and properties of alkyl-substituted poly(aryl ether ketone)s showing high solubility toward organic solvents

✍ Scribed by Yoshihiro Taguchi; Hiroshi Uyama; Shiro Kobayashi

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 439 KB
• Volume: 34
• Category: Article
• ISSN: 0887-624X
• DOI: 10.1002/(sici)1099-0518(199603)34:4<561::aid-pola1>3.0.co;2-u

✦ Synopsis

Alkyl-substituted poly(ary1 ether ketone)s (PEKs), having more than two alkyl substituents per repeat unit, were synthesized by nucleophilic substitution reaction of 1,l'-(p-phenylenedioxy)bis[ 2-methyl-4-(fluorobenzoyl)benzene] with an aromatic diol of different structure in the presence of a base. The resulting polymer showed high solubility toward polar organic solvents such as chloroform, N,N-dimethylacetamide, and N-methyl-2-pyrrolidone. The alkyl-substituted PEKs showed glass transition points of around 150°C and were thermally stable up to 44OoC under nitrogen. Crystallinity of the polymer was examined by using WAXD.