Magnetic Field Inspired Contact Angle Hysteresis Drives Floating Polyolefin Rafts

被引：16
|
作者：
Frenkel, Mark [1 ]
Danchuk, Viktor [2 ]
Multanen, Victor [1 ]
Bormashenko, Edward [1 ]
机构：
[1] Ariel Univ, Fac Engn, Chem Engn, Biotechnol & Mat Dept, POB 3, IL-407000 Ariel, Israel
[2] Ariel Univ, Exact Sci Fac, Dept Phys, POB 3, IL-407000 Ariel, Israel
来源：
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS | 2018年 / 22卷
关键词：
Polymer raft; Floating; Magnetic field; Diamagnetic properties; Contact angle hysteresis; LINE; SURFACES;
D O I：
10.1016/j.colcom.2017.12.002
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Displacement of floating polymer (polyolefin) rafts by steady magnetic field is reported. The effect is due to the interplay of gravity deforming the water/vapor interface, contact angle hysteresis and diamagnetic properties of the liquid support. Magnetic field (ca.0.06 T) deformed the water/vapor interface and impacted the interfacial apparent contact angle. This deformation gave rise to the propulsion force, displacing the polymer raft. The velocity of displacement of center of mass of rafts v(cm) congruent to 0.015 m/s was registered. The effect is related to the contact angle hysteresis affected by the magnetic field, enabling the change in the apparent interfacial contact angle. The semi-quantitative model of the process is suggested.
引用
收藏
页码：38 / 41
页数：4
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