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- W2051299504 abstract "La chloration du polystyrène a été réalisée en solution (CCl4) à l'obscurité avec SnCl4 catalyseur à 2,5°C. Macro et microstructures des polystyrènes chlorés ont été établi par les spectroscopies RX, IRTF, RMN (1H, 13C, DEPT). Les polystyrènes chlorés sont moins cristallins que le polystyrène. IRTF et RMN montrent 2 types de substitutions d'H: substitution aliphatique au niveau de C8 et substitution aromatique au niveau de C2 et C4 (principale). Nous avons établi les valeurs des fractions molaires des différentes unités constitutives des polystyrènes chlorés. Chlorination of polystyrene has been carried out in solution (CCl4) in the dark with SnCl4 as catalyst at 2.5°C. Macro and microstructures of the chlorinated polystyrene have been established by X-ray methods, FTIR, NMR (1H, 13C, DEPT) spectroscopy. Chlorinated polystyrene is less crystalline than polystyrene. FTIR and NMR spectra show two types of substitution, viz. aliphatic substitution in the methylene group and principally aromatic substitution at C2 and C4. We have established the proportions of the various structural units in the chlorinated polymers." @default.
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- W2051299504 date "1993-07-01" @default.
- W2051299504 modified "2023-09-25" @default.
- W2051299504 title "Halogenation du polystyrene—IV. Chloration ionique catalysee du polystyrene caracterisation des macro et microstructures regioselectivite de cette chloration" @default.
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- W2051299504 doi "https://doi.org/10.1016/0014-3057(93)90292-n" @default.
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