Details

Autor(en) / Beteiligte

• Mukai, Sada-atsu
• Koyama, Takehito
• Tsujii, Kaoru
• Deguchi, Shigeru

Titel

Anomalous long-range repulsion between silica surfaces induced by density inhomogeneities in supercritical ethanol

Ist Teil von

• Soft matter, 2014-01, Vol.10 (35), p.6645-6650

Ort / Verlag

England

Erscheinungsjahr

2014

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Anomalous long-range repulsion, extending over several micrometres, emerged between silica surfaces around the ridge of density fluctuations in supercritical ethanol at temperatures and pressures near the gas/liquid critical point (T(c) = 241 °C, P(c) = 6.14 MPa). Analysis shows that augmentation of ethanol density around silica surfaces in the presence of density fluctuations facilitates dissociation of silanol groups, leading to long-range electrostatic repulsion in the nonpolar medium.