Dendronized Polymers via Macromonomer Route in Supercritical Carbon Dioxide

✍ Scribed by Liborio Ivano Costa; Edis Kasëmi; Giuseppe Storti; Massimo Morbidelli; Peter Walde; A. Dieter Schlüter

• Book ID: 102498623
• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 269 KB
• Volume: 29
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.200800250

✦ Synopsis

Abstract

Radical polymerizations from third to fifth generation macromonomers were conducted in supercritical carbon dioxide (scCO~2~). It was found that all monomers were not soluble in such a medium, and reactions occurred in the CO~2~‐swollen monomer matrices. Despite the expected severe diffusion limitations, very high conversions and molecular weights were obtained. It is believed that the plasticization effect induced by the CO~2~ plays a key role in these surprising findings. Scanning force microscopical analyses confirmed that mainly linear dendronized polymers were obtained and therefore chain transfer to polymer is virtually irrelevant.

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