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- W2066704795 abstract "L'étude du système polyoxyèthylène (Mw = 11.500)-n-decane par chromatographie gaz-solide conduit aux conclusions suivantes: l'adsorption de la sonde aux différentes interfaces n'est jamais négligeable malgré l'absence d'interactions spécifiques entre le décane et le polymère. Si l'on tient compte de ces phénomènes, les valeurs du degré de cristallinité sont en bon accord avec celles de la littérature. Le brusque accroissement du volume spécifique de rétention Vg0 observé à 42.3° et 51,4° résulte du dépliement des chaînes par étape ν4 → 3 et ν3 → 2 dans les lamelles cristallines. Study of the system poly(ethylene oxide) (Mw = 11,500)-n-decane by gas-solid chromatography leads to two main conclusions: adsorption of the probe at the various interfaces is never negligible, in spite of the lack of any strong specific interaction between the alkane and the polyether. Reliable values of the degree of crystallinity may be however derived from measurements, taking into account these adsorption phenomena. The sharp increases of the specific retention volumes (Vg0) observed at well defined temperatures (about 42.3 and 51.4°C) are directly related to the well known chain unfolding ν4 → 3 and ν3 → 2 in the crystalline lamellae." @default.
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- W2066704795 date "1983-01-01" @default.
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- W2066704795 title "Étude par chromatographie gaz-solide du polyoxyéthylène a l'état semi-cristallin" @default.
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- W2066704795 doi "https://doi.org/10.1016/0014-3057(83)90093-9" @default.
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