Surface fluorination of PEEK film by selective wet-chemistry

✍ Scribed by Jacqueline Marchand-Brynaert; Giuseppe Pantano; Olivier Noiset

• Book ID: 104164446
• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 631 KB
• Volume: 38
• Category: Article
• ISSN: 0032-3861
• DOI: 10.1016/s0032-3861(96)00661-1

✦ Synopsis

The PEEK-OH film, obtained by surface reduction of the native PEEK film, was designed as a versatile key-intermediate for the development of mild and selective fluorination processes. Reaction with diethylaminosulfur trifluoride in CFC13, and 4-trifluoromethylbenzamide in HOAc (H2SO 4 catalysis) gave the PEEK-F and PEEK-PhCF3 films, in 92% and 36% yields, respectively. Reaction of PEEK-ONa with heptadecafluoro-10-iododecane in DMF produced the PEEK-CsF17 film in 6% yield. The modified PEEK surfaces were analysed by X-ray photoelectron spectroscopy (X.p.s.).