Study of free-radical copolymerization of N-isopropylacrylamide with 2-acrylamido-2-methyl-1-propanesulphonic acid

✍ Scribed by Chi Zhang; Allan J. Easteal

• Publisher: John Wiley and Sons
• Year: 2003
• Tongue: English
• Weight: 108 KB
• Volume: 88
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.12095

✦ Synopsis

Abstract

The free‐radical copolymerization of N‐isopropylacrylamide and 2‐acrylamido‐2‐methyl‐1‐propanesulphonic acid at varying comonomer mole ratios was studied at 70°C. The extent of conversion was determined as a function of time and comonomer mixture composition, and copolymer compositions were determined using elemental analysis and ^13^C NMR spectroscopy. Monomer reactivity ratios were evaluated for low conversions using Kelen‐Tüdos and Fineman‐Ross methods. The copolymers were characterized using ^13^C and ^1^H NMR spectra, FTIR spectroscopy, and differential scanning calorimetry. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 88: 2563–2569, 2003