Esterolytic activity of vinylimidazole–vinylpyrrolidinone copolymers
✍ Scribed by Kenneth D. Kopple
- Book ID
- 101715809
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1968
- Tongue
- English
- Weight
- 388 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0006-3525
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✦ Synopsis
Copolymers of vinylimidazoles and vinylpyrrolidinone, dilute in imidazole residues, have been prepared; their reactivity in the hydrolysis of p-nitrophenyl acetate has been examined. The catalytic activity of imidazole residues in these copolymers is comparable to that of nonpolymeric imidazoles of the same basicity, and no kinetic effects of preassociation of polymer with substrate ester of p-nitrophenol were detected. It is suggested that although polyvinylpyrrolidinone probably does bind these substances, they are sequestered from the catalytic side chains.
📜 SIMILAR VOLUMES
Copolymers of vinylimidazole and vinylpyrrolidone containing 0.7-24% of the former residue have been prepared. Titration behavior was examined over a range of temperature and at several ionic strengths. Intrinsic pK's, corrected for electrostatic effects, are independent of mole fraction of imidazol