XPS characterization of surface fluorinated poly(4-methyl-1-pentene)

✍ Scribed by J. M. Mohr; D. R. Paul; Y. Taru; T. E. Mlsna; R. J. Lagow

• Publisher: John Wiley and Sons
• Year: 1991
• Tongue: English
• Weight: 578 KB
• Volume: 42
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1991.070420916

✦ Synopsis

SYNOPSIS

The fluorinated surface layer of poly (4-methyl-1-pentene) membranes exposed to a dilute stream of fluorine gas has been characterized with X-ray photoelectron spectroscopy. The concentration and profile of reacted fluorine as a function of exposure time is determined.

A computer routine was employed to deconvolute the poorly resolved carbon spectra after various fluorine exposure times. The concentrations of mono-, di-, and trifluorocarbon groups thus determined were used to propose specific structures of PMP at the surface after 1 and 15 min of fluorination. The carbon spectra collected at electron takeoff angles of 15", 30", and 90" were also deconvoluted, giving insight into the placement of fluorine as a function of depth. Oxygen is incorporated into the polymer during the fluorination reaction, and the 01s spectra was deconvoluted to determine how the oxygen is bound.