Surface hydroxylation of poly(vinylidene fluoride) (PVDF) film

✍ Scribed by Jacqueline Marchand-Brynaert; Nathalie Jongen; Jean-Luc Dewez

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 192 KB
• Volume: 35
• Category: Article
• ISSN: 0887-624X
• DOI: 10.1002/(sici)1099-0518(199705)35:7<1227::aid-pola8>3.0.co;2-z

✦ Synopsis

The surface of PVDF film was selectively modified by wet chemistry. Treatment with aqueous LiOH produced HF-elimination and the emergence of an oxygencontaining functionality. The XPS analysis clearly indicated the presence of ketone-, ether(epoxide)-, and alcohol motifs. The percentage of alcohols could be significantly increased by reduction of the ketones with NaBH 4 in 2-propanol, followed by reduction of the epoxides with DIBAL-H in hexane. Thus, the full treatment led to a PVDF surface displaying 7 to 16% of oxygen-containing units, of which about 60% consisted in alcohol motifs. The reactvity of the surface-displayed hydroxyl functions was assayed by radiolabeling with [ 3 H]-Ac 2 O.