N-Vinyl-2-pyrrolidone -2-(dimethy1amino) ethyl methacrylate copolymers were quaternized with octyl bromide in tetramethylene sulfone. The quaternization kinetics was studied, varying the concentrations of reagents and the composition of copolymers. The initial rate constant is not disturbed by the
Copolymers of N-vinyl-2-pyrrolidone and 2-(dimethylamino)ethyl methacrylate, 1. Synthesis, characterization, quaternization
✍ Scribed by Karine Deboudt; Michèle Delporte; Claude Loucheux
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 468 KB
- Volume
- 196
- Category
- Article
- ISSN
- 1022-1352
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✦ Synopsis
Abstract
2‐(Dimethylamino)ethyl methacrylate (DMAEM) — N‐vinyl‐2‐pyrrolidone (VP) copolymers were synthesized and characterized. The copolymerization parameters were determined: r~VP~ = 0,61, r~DMAEM~ = 11,41. The tacticity of DMAEM sequences and the distribution of monomer units were estimated. Then, the experimental conditions for the quaternization of the copolymers with alkyl bromides were defined. The modified copolymers were characterized and the mechanism of the quaternization reaction was studied via potentiometry.
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## Abstract __N__‐Vinyl‐2‐pyrrolidone (VP) — 2‐(dimethylamino)ethyl methacrylate (DMAEM) copolymers were quaternized with octyl, dodecyl or hexadecyl bromide. The behaviour of the modified copolymers in aqueous solutions was studied by viscosimetry. As typical of classical polyelectrolytes, by incr
## Abstract Radical suspension copolymerization of 1‐vinyl‐2‐pyrrolidone (VP) with three different cross‐linkers: divinylbenzene (DVB), trimethylolpropane trimethacrylate (TRIM), and di(methacryloxymethyl) naphthalene (DMN) was used to prepare macroporous microspheres. During the copolymerization,