Interferometry Study of Aqueous Lubrication on the Surface of Polyelectrolyte Brush

2014 ◽  
Vol 6 (22) ◽  
pp. 20365-20371 ◽  
Author(s):  
Motoyasu Kobayashi ◽  
Hiroyoshi Tanaka ◽  
Myo Minn ◽  
Joichi Sugimura ◽  
Atsushi Takahara
Keyword(s):  
Aqueous Lubrication ◽  
Polyelectrolyte Brush

scholarly journals Constructing a biomimetic robust bi-layered hydrophilic lubrication coating on surface of silicone elastomer

Friction ◽  
2021 ◽  
Author(s):  
Luyao Gao ◽  
Xiaoduo Zhao ◽  
Shuanhong Ma ◽  
Zhengfeng Ma ◽  
Meirong Cai ◽  
...  
Keyword(s):  
Bearing Capacity ◽  
Composite Layer ◽  
High Load ◽  
Silicone Elastomer ◽  
Aqueous Lubrication ◽  
Low Friction ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Lubrication Performance ◽  
Wide Range

AbstractSilicone elastomers-based materials have been extensively involved in the field of biomedical devices, while their use is extremely restricted due to the poor surface lubricity and inherent hydrophobicity. This paper describes a novel strategy for generating a robust layered soft matter lubrication coating on the surface of the polydimethylsiloxane (PDMS) silicone elastomer, by entangling thick polyzwitterionic polyelectrolyte brush of poly (sulfobetaine methacrylate) (PSBMA) into the sub-surface of the initiator-embedded stiff hydrogel coating layer of P(AAm-co-AA-co-HEMA-Br)/Fe, to achieve a unified low friction and high load-bearing properties. Meanwhile, the stiff hydrogel layer with controllable thickness is covalently anchored on the surface of PDMS by adding iron powder to provide catalytic sites through surface catalytically initiated radical polymerization (SCIRP) method and provides high load-bearing capacity, while the topmost brush/hydrogel composite layer is highly effective for aqueous lubrication. Their synergy effects are capable of attaining low friction coefficient (COFs) under wide range of loaded condition in water environment with steel ball as sliding pair. Furthermore, the influence of mechanical modulus of the stiff hydrogel layer on the lubrication performance of layered coating is investigated, for which the COF is the lowest only when the modulus of the stiff hydrogel layer well matches the PDMS substrate. Surprisingly, the COF of the modified PDMS could remain low friction (COF < 0.05) stably after encountering 50,000 sliding cycles under 10 N load. Finally, the surface wear characterizations prove the robustness of the layered lubricating coating. This work provides a new route for engineering lubricious silicon elastomer with low friction, high load-bearing capacity, and considerable durability.

Spreading Dynamics of a Precursor Film of Ionic Liquid or Water on a Micropatterned Polyelectrolyte Brush Surface

Langmuir ◽  
2021 ◽  
Author(s):  
Shohei Shiomoto ◽  
Hayato Higuchi ◽  
Kazuo Yamaguchi ◽  
Hiromitsu Takaba ◽  
Motoyasu Kobayashi
Keyword(s):  
Ionic Liquid ◽  
Precursor Film ◽  
Polyelectrolyte Brush ◽  
Spreading Dynamics

scholarly journals Self-healing behavior of a polyelectrolyte-based lubricant additive for aqueous lubrication of oxide materials

2006 ◽  
Vol 24 (3) ◽  
pp. 217-223 ◽  
Author(s):  
S. Lee ◽  
M. Müller ◽  
R. Heeb ◽  
S. Zürcher ◽  
S. Tosatti ◽  
...  
Keyword(s):  
Lubricant Additive ◽  
Self Healing ◽  
Oxide Materials ◽  
Aqueous Lubrication

Polyelectrolyte Brush Interaction with Multivalent Ions

1999 ◽  
Vol 32 (24) ◽  
pp. 8189-8196 ◽  
Author(s):  
E. B. Zhulina ◽  
O. V. Borisov ◽  
T. M. Birshtein
Keyword(s):  
Polyelectrolyte Brush ◽  
Multivalent Ions

scholarly journals An investigation on the biotribocorrosion behaviour of CoCrMo alloy grafted with polyelectrolyte brush

2014 ◽  
Vol 24 (6) ◽  
pp. 2151-2159 ◽  
Author(s):  
Hong-Yu Zhang ◽  
Yu-Jiao Zhu ◽  
Xiang-Yu Hu ◽  
Yan-Fang Sun ◽  
Yu-Long Sun ◽  
...  
Keyword(s):  
Cocrmo Alloy ◽  
Polyelectrolyte Brush

Aqueous Lubrication in Cosmetics

2014 ◽  
pp. 103-144 ◽  
Author(s):  
Gustavo S. Luengo ◽  
Anthony Galliano ◽  
Claude Dubief
Keyword(s):  
Aqueous Lubrication
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