Photosulfonation of Low-Density Polyethylene Films

✍ Scribed by Masashi Kaneko; Hisaya Sato

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 106 KB
• Volume: 205
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.200300033

✦ Synopsis

Abstract

Summary: Photosulfonation of low‐density polyethylene (LDPE) films by UV irradiation in the presence of gaseous sulfur dioxide (SO~2~) and oxygen (O~2~) was studied by attenuated total reflectance (ATR) infrared spectroscopy and X‐ray photoelectron spectroscopy (XPS). The ATR and XPS analysis and chemical modification of UV‐irradiated LDPE films demonstrated the generation of CC double bonds and sultones in the reaction. These results indicated the possibility that sulfur trioxide (SO~3~) was produced during the photosulfonation. New pathways for the SO~3~ reaction with LDPE films, resulting in the formation of sulfonic acid groups, were proposed.

Overview of the mechanism proposed for the photosulfonation of low‐density polyethylene by SO~3~ (produced upon UV‐irradiation of gaseous SO~2~ and O~2~).

imageOverview of the mechanism proposed for the photosulfonation of low‐density polyethylene by SO~3~ (produced upon UV‐irradiation of gaseous SO~2~ and O~2~).