Investigation of the sequence distribution of bulk and emulsion styrene–acrylic acid copolymers by 1H- and 13C-NMR

✍ Scribed by Shouting Wang; Gary W. Poehlein

• Publisher: John Wiley and Sons
• Year: 1993
• Tongue: English
• Weight: 674 KB
• Volume: 49
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1993.070490605

✦ Synopsis

The sequence distribution of homogeneous styrene ( S) -acrylic acid ( A ) copolymers, obtained by low conversion ( < 10% ) bulk copolymerization, has been studied by 'Hand I3C-NMR.

The reactivity ratios r, and r, were determined by the Kelen-Tudos method. The sequence distributions at the triad level were assigned and verified by Alfrey-Mayo kinetics. The sequence distributions of emulsion copolymers formed at different reaction conversions were investigated and compared with the results obtained from bulk copolymers. 0 1993