Work of adhesion: contact angles and contact mechanics

Packham, D. E.

doi:10.1016/0143-7496(95)00034-8

Cited by 156 publications

(82 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In this study, the work of adhesion (WA) can be defined as the work that must be done to separate two neighboring phases of a liquidsolid interface (Packham 1996). Similarly to the liquid contact angle, the WA can reveal the water-repellency degree of any nano-coated surface (Arabzadeh et al 2016a;Nascimento et al 2003).…”

Section: Resultsmentioning

confidence: 99%

Influence of Deicing Salts on the Water-Repellency of Portland Cement Concrete Coated with Polytetrafluoroethylene and Polyetheretherketone

Arabzadeh

Ceylan

Kim

et al. 2017

Airfield and Highway Pavements 2017

View full text Add to dashboard Cite

Sustainable super water/ice-repellent pavements are gaining attention as a smart solution for mitigating problems associated with winter pavement maintenance of roadways and airfields. Such smart pavements can facilitate surface drainage and prevent or curb ice formation or snow accumulation. While a conventional method for melting ice and snow is the use of deicing chemicals, such materials can transfer to the surface of nanotechnology-based pavements and influence their water/icerepellency by changing the chemistry of water or ice. This study focused on characterizing the degree of hydrophobicity of Portland cement concrete (PCC) nanocoated with polytetrafluoroethylene/polyetheretherketone (PTFE/PEEK). A layer-bylayer (LBL) spray deposition technique was used for spraying the binding agent and water-repellent materials. The liquidrepellency was characterized by measuring the static liquid contact angles (LCAs) and calculating the works of adhesion (WA). The liquid types used included distilled water and two types of deicing chemicals prepared by dissolving salts in distilled water. Data analysis results revealed that salt contamination improves the waterrepellency of nano-coated surfaces. Disciplines Civil and Environmental Engineering | Civil Engineering | Construction Engineering and Management | Structural Engineering CommentsThis is a manuscript of a proceeding published as Arabzadeh, Ali, Halil Ceylan, Sunghwan Kim, Kasthurirangan Gopalakrishnan, Alireza Sassani, Sriram Sundararajan, Peter C. Taylor ABSTRACTSustainable super water/ice-repellent pavements are gaining attention as a smart solution for mitigating problems associated with winter pavement maintenance of roadways and airfields. Such smart pavements can facilitate surface drainage and prevent or curb ice formation or snow accumulation. While a conventional method for melting ice and snow is the use of deicing chemicals, such materials can transfer to the surface of nanotechnology-based pavements and influence their water/ice-repellency by changing the chemistry of water or ice. This study focused on characterizing the degree of hydrophobicity of Portland cement concrete (PCC) nano-coated with polytetrafluoroethylene/polyetheretherketone (PTFE/PEEK). A layer-by-layer (LBL) spray deposition technique was used for spraying the binding agent and water-repellent materials. The liquid-repellency was characterized by measuring the static liquid contact angles (LCAs) and calculating the works of adhesion (WAs). The liquid types used included distilled water and two types of deicing chemicals prepared by dissolving salts in distilled water. Data analysis results revealed that salt contamination improves the water-repellency of nano-coated surfaces.2

show abstract

Section: Resultsmentioning

confidence: 99%

Influence of Deicing Salts on the Water-Repellency of Portland Cement Concrete Coated with Polytetrafluoroethylene and Polyetheretherketone

Arabzadeh

Ceylan

Kim

et al. 2017

Airfield and Highway Pavements 2017

View full text Add to dashboard Cite

show abstract

“…It is well known if the surface roughness is less than 100 nm it can not be the reason for the contact angle hysteresis [26]. There are numerous well documented experimental confirmation of the existence of the hysteresis of contact angle on smooth enough and homogeneous surfaces [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]. Even more than that, the static hysteresis of contact angle is present even on surfaces which are definitely molecularly smooth: free liquid films [29][30].…”

Section: Hysteresis Of Contact Angle On Smooth Homogeneous Solid Subsmentioning

confidence: 99%

Wetting Phenomena and Nanoforces

Starov¹

2010

Surfactant Science

View full text Add to dashboard Cite

“…Packham has reviewed the influence of surface topography on adhesion [9] . The complex interactions between the chemistry and structure, invoking both the adsorption and mechanical interlocking theories of adhesion, are used to explain the generally improved adhesion resulting from micro-or nano-rough surfaces.…”

Section: Influence Of Surface Roughnessmentioning

confidence: 99%

“…Consequently, the spreading of a contacting medium over a low energy surface is reduced along with any physical or chemical bonds, resulting in low practical adhesion levels. Packham [9] describes the practical adhesion or fracture energy, G, in terms of a surface energy term G o and a separate term describing the sum of other energy absorbing processes, ϕ, where:…”

Section: The Importance Of Low Energy Surfacesmentioning

confidence: 99%