, Nous notons par ailleurs que l'eau présentant un pH de 6.5, le potentiel de surface du verre doit être légèrement élevé en valeur absolue, p.5

, En revanche, avec l'eau contactée eau douce, le lm d'eau se stabilise à une épaisseur de 30 nm. La longueur de Debye pour cette solution est au maximum de 1.7 nm. Les molécules issues du brut pouvant être ionisées, cette valeur est probablement plus faible en réalité. Cette épaisseur est du même ordre de grandeur que les lms stables de solutions de NaCl à 10 ?1 ou 10 ?2 mol/L. De plus, La stabilisation électrostatique du lm doit donc être facilitée à concentration en sel égale

, Il est probable que la stabilisation soit d'origine stérique

, Nos observations ne permettent pas d'armer que la stabilité du système et le mouillage de l'huile sur le verre sont impactés par la présence de molécules issues du brut dans la solution aqueuse

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