The swelling of lamellar phases in oil: The role of double layer interactions

2007 ◽  
pp. 31-37
Author(s):  
H. Wennerström
Keyword(s):  
Double Layer ◽  
Lamellar Phases

scholarly journals Understanding the Unique Role of Phospholipids in the Lubrication of Natural Joints: An Interfacial Tension Study

Coatings ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 264 ◽  
Author(s):  
Aneta D. Petelska ◽  
Katarzyna Kazimierska-Drobny ◽  
Katarzyna Janicka ◽  
Tomasz Majewski ◽  
Wiesław Urbaniak
Keyword(s):  
Interfacial Tension ◽  
Lipid Bilayers ◽  
Solid Lubricant ◽  
Solid Lubricants ◽  
Phospholipid Bilayer ◽  
Low Friction ◽  
Unique Role ◽  
Lamellar Phases ◽  
Chemical Inertness

Some solid lubricants are characterized by a layered structure with weak (van der Waals) inter-interlayer forces which allow for easy, low-strength shearing. Solid lubricants in natural lubrication are characterized by phospholipid bilayers in the articular joints and phospholipid lamellar phases in synovial fluid. The influence of the acid–base properties of the phospholipid bilayer on the wettability and properties of the surface have been explained by studying the interfacial tension of spherical lipid bilayers based on a model membrane. In this paper, we show that the phospholipid multi-bilayer can act as an effective solid lubricant in every aspect, ranging from a ‘corrosion inhibitor’ in the stomach to a load-bearing lubricant in bovine joints. We present evidence of the outstanding performance of phospholipids and argue that this is due to their chemical inertness and hydrophilic–hydrophobic structure, which makes them amphoteric and provides them with the ability to form lamellar structures that can facilitate functional sliding. Moreover, the friction coefficient can significantly change for a given phospholipid bilayer so it leads to a lamellar-repulsive mechanism under highly charged conditions. After this, it is quickly transformed to result in stable low-friction conditions.

scholarly journals Electrostatics of Nanoparticle–Wall Interactions within Nanochannels: Role of Double-Layer Structure and Ion–Ion Correlations

ACS Omega ◽  
2018 ◽  
Vol 3 (9) ◽  
pp. 11340-11353 ◽  
Author(s):  
Inderbir S. Sidhu ◽  
Amalie L. Frischknecht ◽  
Paul J. Atzberger
Keyword(s):  
Double Layer ◽  
Layer Structure ◽  
Double Layer Structure ◽  
Wall Interactions

Swelling and Dissolution of Lamellar Phases: Role of Bilayer Organization

Langmuir ◽  
1998 ◽  
Vol 14 (26) ◽  
pp. 7371-7377 ◽  
Author(s):  
M. Buchanan ◽  
J. Arrault ◽  
M. E. Cates
Keyword(s):  
Lamellar Phases
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