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Diastereotopic styrene arrangement in the heterosequences of random styrene-ethylene copolymers

TitleDiastereotopic styrene arrangement in the heterosequences of random styrene-ethylene copolymers
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2008
AuthorsLongo, P., Napoli M., and Ricciardi Rosa
JournalMacromolecular Chemistry and Physics
Volume209
Pagination1050-1055
ISSN10221352
KeywordsABS resins, Butadiene, Complexation, Copolymerization, Copolymers, Diffraction, Ethylene, Ethylene copolymers, Fourier transform infrared spectroscopy, Fourier transforms, FTIR spectrums, Glass transition, Intermediate temperatures, Isotactic, Methine, Methylene carbons, Model compounds, NMR, Nmr spectroscopies, Nuclear magnetic resonance, Nuclear magnetic resonance spectroscopy, Pentadecane, Phenyl groups, Phenyl substituents, Plastic products, Polymers, Polystyrenes, Powder diffractions, Powders, Resonance, Single glass transitions, Stereoregularity, styrene, Synthesis of, thermal analysis, Thermoanalysis, X ray diffraction analysis
Abstract

{Random styrene-ethylene copolymers have been synthesized by the hydrogenation of styrene-butadiene copolymers. The samples were characterized by 13C NMR spectroscopy, X-ray powder diffraction, thermal analysis, and Fourier transform IR (FTIR) spectroscopy. In the 13C NMR spectra, the resonance of the methylene carbon next to a methine bearing a phenyl group presents splitting due to its diastereotopic positions with respect to the phenyl substituents of the second and third inserted styrene units. A definitive assignment of the resonances of the SEES sequences (S = styrene

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-55349142495&doi=10.1002%2fmacp.200800007&partnerID=40&md5=985459dea6ac6d99af3418ac145a940c
DOI10.1002/macp.200800007
Citation KeyLongo20081050