Contact angle, wettability and adhesion. / Volume 5

318 Pages·2008·10.79 MB·English

by  K L Mittal

This volume chronicles the proceedings of the 5th
International Symposium on Contact Angle, Wettability
and Adhesion. Toronto, Canada, June 2006. Wettability is
of pivotal importance in many and varied arenas, ranging
from mundane to micro-and nanofl uidics to lithography
to biomedical. It should be underscored that in the last
years there has been burgeoning interest in replicating the
so-called “Lotus Leaf Effect” to create superhydrophobic
surfaces.
This volume contains a total of 19 papers covering many
facets of contact angle, wettability and adhesion. All
manuscripts were rigorously peer-reviewed and revised and
edited before inclusion in this book. Concomitantly, this Contact Angle,
volume represents an archival publication of the highest
standard.
This book (5th volume in the series) is divided into three Wettability
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parts: Part 1: Contact Angle Measurements and Solid .L o
Surface Free Energy; Part 2: Relevance of Wetting in . M nt
Cleaning and Adhesion; Part 3: Superhydrophobic Surfaces. i a
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The topics covered include: Fundamental aspects of ta t and Adhesion
contact angle and its measurement; solidifi cation contact l A
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angles of micro-droplets; microscopic wettability of E n
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wood call walls; dynamic vapor-liquid interfacial tension; .) l
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surface free energy of polymeric materials; surface , Volume 5

cleanliness evaluation from wettability measurements; W
wettability parameters affecting surface cleanability e
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of stainless steel and textiles; wetting and adhesion in t
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fi brous materials; wettability and adhesion of coatings; b Edited by
adhesion of hydrophobizing agents; modulation of il
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surface properties of polymers; graft effi ciency and t K.L. Mittal
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adhesion; relevance of interfacial free energy in cell
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adhesion; various approaches to create superhydrophobic n
surfaces; adsorption of surfactants on hydrophobic and d

superhydrophobic surfaces. A
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ISBN: 978-90-04-15864-1
VSP
9 789004 158641
www.brill.nl
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Contact Angle, Wettability and Adhesion
Volume 5
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Contact Angle,
Wettability and Adhesion
Volume 5
Editor
K.L. Mittal
LEIDEN • BOSTON
2008
CRC Press
Taylor & Francis Group
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Boca Raton, FL 33487-2742
© 2008 by VSP
CRC Press is an imprint of Taylor & Francis Group, an Informa business
No claim to original U.S. Government works
Version Date: 20120525
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Contents
Preface vii
Part1: ContactAngleMeasurementsandSolidSurfaceFreeEnergy
Effectsofsurfacestructureonthebehaviorofaheated
contactline
M.Ojha,G.Dalakos,S.Panchamgam,P.C.WaynerJr.
andJ.L.Plawsky 3
Apparentsolidificationcontactanglesofmicro-droplets
depositedonsolidsurfaces
RiLi,N.Ashgriz,S.Chandra,J.R.AndrewsandS.Drappel 25
Microscopicwettabilityofsoftwoodtracheidcellwalls:
Effectsofwallsculpturing,sapsolutes,anddrying
M.M.Kohonen 47
Theeffectofbinaryfattyacidssystemsonpartitioning,IFTand
wettabilityofcalcitesurfaces
O.KaroussiandA.A.Hamouda 59
Mechanisticmodelingofdynamicvapor-liquidinterfacial
tensionincomplexpetroleumfluids
S.C.AyiralaandD.N.Rao 73
Influenceofambienthumidityontheapparentsurfacefree
energyofpoly(methylmethacrylate)(PMMA)
L.Holysz,E.ChibowskiandK.Terpilowski 95
Part2: RelevanceofWettinginCleaningandAdhesion
Wettabilitymeasurementsandcleanlinessevaluationwithout
substantialcost
J.B.DurkeeandA.Kuhn 115
Wettabilityparameterscontrollingthesurfacecleanability
ofstainlesssteel
L.Boulangé-Petermann,J.-C.JoudandB.Baroux 139
vi Contents
Functionaltopcoatsoncoatedtextilesforimprovedor
self-attainedcleanability
T.Bahners,L.Prager,B.MarquardtandE.Schollmeyer 153
Wettingandadhesioninfibrousmaterials: Stochasticmodeling
andsimulation
W.Zhong,N.PanandD.Lukas 173
Adhesionofhydrophobizingagents:Acomparisonofvalues
determinedbycontactangleandtheJKRapproaches
J.Lindfors,J.LaineandP.Stenius 191
Wettabilityaspectsandtheimprovementofadhesionof
UVcurablepowdercoatingsonpolypropylenesubstrates
M.WoutersandP.CastellMuixí 207
Modulationofthesurfacepropertiesofreactivepolymersby
photo-Friesrearrangement
S.Temmel,T.HöflerandW.Kern 229
Effectofgraftingefficiencyonpeelstrength,contactangle,
particlesizeandviscosityofbutylacrylate–PUDhybrid
adhesivesforplasticlaminates
S.K.Patel,R.N.JagtapandN.Khatik 239
Celladhesiontopolystyrenesubstrates:Relevanceofinterfacial
freeenergy
A.CarréandV.Lacarrière 253
Part3: SuperhydrophobicSurfaces
Superhydrophobicaluminumsurfacesobtainedbychemical
etching
D.K. SarkarandM.Farzaneh 271
Effectoftemperatureonsuperhydrophobiczincoxidenanotowers
N.Saleema,D.K.SarkarandM.Farzaneh 279
Superhydrophobicpropertiesofsilvercoatedcopper
A.Safaee,D.K.SarkarandM.Farzaneh 287
Surfactantsadsorptionathydrophobicandsuperhydrophobic
solidsurfaces
M.Ferrari 295
ContactAngle,WettabilityandAdhesion,Vol.5,pp.vii–viii
Ed.K.L.Mittal
VSP2008
Preface
This volume chronicles the proceedings of the Fifth International Symposium on
ContactAngle,WettabilityandAdhesionheldundertheaegisofMSTConferences
in Toronto, Canada, June 21–23, 2006. The premier symposium with the same
title was held in 1992 in honor of Prof. Robert J. Good as a part of the American
Chemical Society meeting in San Francisco, California and the second, third and
fourth events in this series were held in 2000 in Newark, New Jersey, 2002 in
Providence, Rhode Island, and 2004 in Philadelphia, Pennsylvania, respectively.
Theproceedings oftheseearlier symposia havebeenproperly documented asfour
hard-bound books [1–4]. Because of the high tempo of research and tremendous
technological importance of this topic, the next (Sixth) symposium in this vein is
plannedtobeheldinOrono,Maine,July14–16,2008.
As pointed out in the Prefaces to the previous volumes, wettability is of pivotal
importance in many and varied arenas, ranging from mundane (e.g., washing
clothes) to high-tech (e.g., micro- and nanofluidics, lithography) to biomedical
(e.g., contact lenses). It should be underscored that in the last years there
has been burgeoning interest in replicating the so-called “Lotus Leaf Effect” to
create superhydrophobic surfaces. A superhydrophobic surface is defined as the
one with water contact angle greater than 150◦, and it is based on the right
combination of surface energy and surface topography. Even a cursory look
at the literature will evince that recently there has been an accelerated pace
of research in many and varied (of course, simple, practical and inexpensive)
means to impart superhydrophobic character to a variety of surfaces – metallic,
ceramic and polymeric. This high tempo of interest in these materials emanates
from their applications, ranging from self-cleaning windows to controlling flow
behavior in nanofluidics to tribological phenomena. Apropos, certain creatures
(animals) capitalize on the superhydrophobic nature of certain parts of their body
to collect water early in the morning (from dew) for subsequent use. Also it
should be emphasized that there has been considerable interest in modulating the
wetting characteristics of surfaces by electrical phenomena, the field known as
“Electrowetting”.
Now coming to this volume, it contains a total of 19 papers covering many
facets of contact angle, wettability and adhesion. It must be recorded that all
manuscripts wererigorously peer-reviewed and revised (some twiceorthrice) and
properlyeditedbeforeinclusioninthisbook. Concomitantly,thisvolumerepresents
an archival publication of the highest standard. It should not be considered a
proceedingsvolumeintheusualandordinarysense,asmanyso-calledproceedings
viii Preface
areneitherpeer-reviewednoradequatelyedited. Bytheway,thetechnicalprogram
forthesymposiumcomprisedmanymorepapers,butthosearenotincludedinthis
volumeforavarietyofreasons(includingsomewhichcouldnotpassmuster).
This book (designated as Volume 5) is divided into three parts: Part 1: Contact
AngleMeasurementsandSolidSurfaceFreeEnergy;Part2: RelevanceofWetting
in Cleaning and Adhesion; and Part 3: Superhydrophobic Surfaces. The topics
covered include: Fundamental aspects of contact angle and its measurement;
solidificationcontactanglesofmicro-droplets;microscopicwettabilityofwoodcell
walls; dynamic vapor–liquid interfacial tension; surface free energy of polymeric
materials;surfacecleanlinessevaluationfromwettabilitymeasurements;wettability
parameters affecting surface cleanability of stainless steel and textiles; wetting
and adhesion in fibrous materials; wettability and adhesion of coatings; adhesion
of hydrophobizing agents; modulation of surface properties of polymers; graft
efficiencyandadhesion;relevanceofinterfacialfreeenergyincelladhesion;various
approaches to create superhydrophobic surfaces; and adsorption of surfactants on
hydrophobicandsuperhydrophobic surfaces.
Thisvolume anditspredecessors [1–4] containing bountiful information (atotal
of∼2900pages)onvariousramificationsofcontactangle,wettabilityandadhesion
provideacomprehensivereferencesourceandthesevolumesreflectthecumulative
wisdomofalegion ofactiveresearchers engaged inunderstanding andharnessing
the wettability phenomena. I sincerely hope these volumes would be of great
interestandvaluetobothneophytes(asagatewaytothefield)aswellastoveterans
(asacommentaryoncontemporaryresearch).
Acknowledgements
Nowitismypleasuretothankallthosewhohelpedinthisendeavor. First,asusual,
myheart-feltthanksgotoDr. RobertH.Lacombe,adearfriendandcolleague, for
taking care of the myriad details entailed in the organization of the symposium.
Second, I would like to acknowledge the reviewers for their time and effort in
providing manyvaluable commentswhich,mostcertainly, improvedthequalityof
manuscriptscontainedinthisvolume. Specialthanksareextendedtotheauthorsfor
theirinterest, cooperation andforproviding writtenaccounts oftheirpresentations
which formed the basis for this book. Finally myappreciation goes tothe staff of
BrillAcademicPublishersforgivingabodyformtothisbook.
K.L.Mittal
P.O.Box1280
HopewellJct.,NY12533
1. K.L.Mittal(Ed.),ContactAngle,WettabilityandAdhesion,VSP,Utrecht(1993).
2. K.L.Mittal(Ed.),ContactAngle,WettabilityandAdhesion,Vol.2,VSP,Utrecht(2002).
3. K.L.Mittal(Ed.),ContactAngle,WettabilityandAdhesion,Vol.3,VSP,Utrecht(2003).
4. K.L.Mittal(Ed.),ContactAngle,WettabilityandAdhesion,Vol.4,VSP/Brill,Leiden(2006).
Part 1
Contact Angle Measurements
and Solid Surface Free Energy