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Local Wear of Catec...
Local Wear of Catechol-Containing Diblock Copolymer Layers : Wear Volume, Stick-Slip, and Nanomechanical Changes
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- Dobryden, Illia (författare)
- Luleå tekniska universitet,Materialvetenskap
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- Steponavičiu̅tė, Medeina (författare)
- Institute of Chemistry, Vilnius University, LT-03225 Vilnius, Lithuania,Vilnius Univ, Inst Chem, LT-03225 Vilnius, Lithuania.
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- Hedman, Daniel, 1989- (författare)
- Luleå tekniska universitet,Materialvetenskap,Center for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea
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- Klimkevičius, Vaidas (författare)
- Institute of Chemistry, Vilnius University, LT-03225 Vilnius, Lithuania,Vilnius Univ, Inst Chem, LT-03225 Vilnius, Lithuania.
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- Makuška, Ricardas (författare)
- Institute of Chemistry, Vilnius University, LT-03225 Vilnius, Lithuania,Vilnius Univ, Inst Chem, LT-03225 Vilnius, Lithuania.
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- Dédinaité, Andra, 1966- (författare)
- KTH,RISE,KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Engineering Pedagogics, SE-100 44 Stockholm, Sweden; RISE Research Institutes of Sweden, Division of Bioscience and Materials, SE-114 86 Stockholm, Sweden,Ingenjörspedagogik,RISE Res Inst Sweden, Div Biosci & Mat, SE-11486 Stockholm, Sweden.
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- Liu, Xioayan (författare)
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China,Shaanxi Normal Univ, Sch Chem & Chem Engn, Xian 710062, Peoples R China.
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- Corkery, Robert W. (författare)
- KTH,Yt- och korrosionsvetenskap,KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Chemistry, Division of Surface and Corrosion Science, SE-100 44 Stockholm, Sweden
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- Claesson, Per M. (författare)
- KTH,Yt- och korrosionsvetenskap,KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Chemistry, Division of Surface and Corrosion Science, SE-100 44 Stockholm, Sweden
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(creator_code:org_t)
- 2021-09-21
- 2021
- Engelska.
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Ingår i: The Journal of Physical Chemistry C. - : American Chemical Society. - 1932-7447 .- 1932-7455. ; 125:38, s. 21277-21292
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Abstract
Ämnesord
Stäng
- Polymers containing catechol groups have gained a large interest, as they mimic an essential feature of mussel adhesive proteins that allow strong binding to a large variety of surfaces under water. This feature has made this class of polymers interesting for surface modification purposes, as layer functionalities can be introduced by a simple adsorption process, where the catechol groups should provide a strong anchoring to the surface. In this work, we utilize an AFM-based method to evaluate the wear resistance of such polymer layers in water and compare it with that offered by electrostatically driven adsorption. We pay particular attention to two block copolymer systems where the anchoring group in one case is an uncharged catechol-containing block and in the other case a positively charged and catechol-containing block. The wear resistance is evaluated in terms of wear volume, and here, we compare with data for similar copolymers with statistical distribution of the catechol groups. Monitoring of nanomechanical properties provides an alternative way of illustrating the effect of wear, and we use modeling to show that the stiffness, as probed by an AFM tip, of the soft layer residing on a hard substrate increases as the thickness of the layer decreases. The stick-slip characteristics are also evaluated. © 2021 The Authors.
Ämnesord
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- Adhesives
- Block copolymers
- Phenols
- Slip forming
- Wear of materials
- Wear resistance
- As layers
- Diblock-copolymer
- Essential features
- Local wears
- Mussel adhesive proteins
- Nanomechanical
- Strong binding
- Surface-modification
- Under water
- Wear volume
- Stick-slip
- Experimentell fysik
- Applied Physics
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- ref (ämneskategori)
- art (ämneskategori)
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Dobryden, Illia
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Steponavičiu̅tė, ...
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Hedman, Daniel, ...
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Klimkevičius, Va ...
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Makuška, Ricarda ...
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Dédinaité, Andra ...
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Liu, Xioayan
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Corkery, Robert ...
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Claesson, Per M.
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