Modifying the Wettability of Surfaces by Nanoparticles: Experiments and Modeling Using the Wenzel Law

Lei Dong; Tiina Nypelö; Monika Österberg; Janne Laine; Mikko Alava

doi:10.1021/la101934t

Modifying the Wettability of Surfaces by Nanoparticles: Experiments and Modeling Using the Wenzel Law

Lei Dong, Tiina Nypelö, Monika Österberg, Janne Laine, Mikko Alava

Research output: Contribution to journal › Article › Scientific › peer-review

16 Citations (Scopus)

Abstract

The control of the wettability by nanoparticles (NPs) was studied by treating lignin model surfaces with silica NPs at various NP concentrations. The experimental contact angles (CAs) were compared to a modified Wenzel equation, which takes into account the changes in the effective surface area and the surface roughness. The conclusion was drawn that the change of effective roughness is not visible, which implies that the NP-induced geometric heterogeneity is irrelevant for the CA change. This is attributed to dynamics of contact line in the weak pinning regime.

Original language	English
Pages (from-to)	14563-14566
Number of pages	4
Journal	Langmuir
Volume	26
Issue number	18
DOIs	https://doi.org/10.1021/la101934t
Publication status	Published - 2010
MoE publication type	A1 Journal article-refereed

Keywords

Nanoparticles
Wenzel law
Wetting

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10.1021/la101934t

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title = "Modifying the Wettability of Surfaces by Nanoparticles: Experiments and Modeling Using the Wenzel Law",

abstract = "The control of the wettability by nanoparticles (NPs) was studied by treating lignin model surfaces with silica NPs at various NP concentrations. The experimental contact angles (CAs) were compared to a modified Wenzel equation, which takes into account the changes in the effective surface area and the surface roughness. The conclusion was drawn that the change of effective roughness is not visible, which implies that the NP-induced geometric heterogeneity is irrelevant for the CA change. This is attributed to dynamics of contact line in the weak pinning regime.",

keywords = "Nanoparticles, Wenzel law, Wetting, Nanoparticles, Wenzel law, Wetting, Nanoparticles, Wenzel law, Wetting",

author = "Lei Dong and Tiina Nypel{\"o} and Monika {\"O}sterberg and Janne Laine and Mikko Alava",

year = "2010",

doi = "10.1021/la101934t",

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journal = "Langmuir",

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T1 - Modifying the Wettability of Surfaces by Nanoparticles: Experiments and Modeling Using the Wenzel Law

AU - Dong, Lei

AU - Nypelö, Tiina

AU - Österberg, Monika

AU - Laine, Janne

AU - Alava, Mikko

PY - 2010

Y1 - 2010

N2 - The control of the wettability by nanoparticles (NPs) was studied by treating lignin model surfaces with silica NPs at various NP concentrations. The experimental contact angles (CAs) were compared to a modified Wenzel equation, which takes into account the changes in the effective surface area and the surface roughness. The conclusion was drawn that the change of effective roughness is not visible, which implies that the NP-induced geometric heterogeneity is irrelevant for the CA change. This is attributed to dynamics of contact line in the weak pinning regime.

AB - The control of the wettability by nanoparticles (NPs) was studied by treating lignin model surfaces with silica NPs at various NP concentrations. The experimental contact angles (CAs) were compared to a modified Wenzel equation, which takes into account the changes in the effective surface area and the surface roughness. The conclusion was drawn that the change of effective roughness is not visible, which implies that the NP-induced geometric heterogeneity is irrelevant for the CA change. This is attributed to dynamics of contact line in the weak pinning regime.

KW - Nanoparticles

KW - Wenzel law

KW - Wetting

KW - Nanoparticles

KW - Wenzel law

KW - Wetting

KW - Nanoparticles

KW - Wenzel law

KW - Wetting

UR - https://www.scopus.com/pages/publications/77956593839

U2 - 10.1021/la101934t

DO - 10.1021/la101934t

M3 - Article

SN - 0743-7463

VL - 26

SP - 14563

EP - 14566

JO - Langmuir

JF - Langmuir

IS - 18

ER -

Modifying the Wettability of Surfaces by Nanoparticles: Experiments and Modeling Using the Wenzel Law

Abstract

Keywords

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