The polymerization of 2-naphthyl methacrylate (NM) in toluene in the presence of tetracyanoethylene and picric acid was studied dilatometrically. The overall activation energy for the polymerization was calculated both in the absence and in the presence of electron acceptors. The results (13.7 kcal/
Kinetic aspects of the polymerization of 2-substituted 2-oxazolines in the presence of electron-acceptors
✍ Scribed by C.I. Simionescu; G. David; F. Sǎndescu
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 225 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0014-3057
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✦ Synopsis
The solution polymerization of 2-methyl 2-oxazoline in the presence of microacceptors without or with polymerizable group (viz. 2,4,7-trinitrofluorenone and tetracyanoethylene) was studied. In the first case, the polymerization is first order with respect to both monomer and acceptor. For the second case, the dependence on acceptor concentration exceeds unity. The propagation by reaction of the active species with the zwitterions formed between the two comonomers is believed to be responsible for this behaviour. The experimental results are in excellent agreement with the previously suggested [1] mechanism of polymerization.
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