Naphthyl methacrylate and 2-naphthyl methacrylate were polymerized with azoisobutyronitrile in n-hexane, cyclohexane and benzene in the absence and in the presence of tetracyanoethylene. Products were transformed into poly(methyl methacrylate) by hydrolysis and methylation: tacticities were then det
The influence of molecular interaction on polymerization—11: A study of the influence of the solvent on the tacticities of poly(2-naphthyl methacrylated) and poly(cumylphenyl methacrylate) obtained in various solvents
✍ Scribed by C. Bratchkov; V. Sinigersky; L. Markova; H. Boudevska
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 279 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0014-3057
No coin nor oath required. For personal study only.
✦ Synopsis
Polymerizations of 2-naphthyl methacrylate and 4(l-methylphenethyl)phenyl methacrylate (cumylphenyl methacrylate) have been carried out in solvents with different dielectric constants and donor numbers (DN). By means of ~H-NMR and fluorescence spectroscopy, the tacticities of the polymers were studied. It was found that the structures of the polymers depend on the dielectric constant of the solvent and not on its donor number. In solvents with high dielectric constant, the contents of isotactic triads are higher than for solvents with low dielectric constants.
📜 SIMILAR VOLUMES
The effect of certain aromatic compounds on the PMR spectrum of methyl methacrylate (MMA) was investigated. The magnitude of observed aromatic-induced shifts decreased in the order benzene >~ styrene > chlorobenzene ~ bromobenzene. Assuming that the interaction arises from a stoichiometric 1 : 1 co
In this work, the solvent effect on the miscibility between poly(vinyl chloride) (PVC) and poly(methyl methacrylate) (PMMA) in ternary polymer solutions was examined by the viscometric method. In these systems, we could understand that the used solvents, tetrahydrofuran (THF) or N,Ndimethylformamide
The magnitude and stability of the induced dipolar orientation of 2-methyl4nitroaniline (MNA)/poly(methyl methacrylate) (PMMA) guest/host system is investigated. The chromophores are aligned using both the corona discharge and contact electrode poling techniques. The magnitude of order parameter (al