Wetting and Wicking

The fundamentals of wetting and wicking are reviewed. Wetting is the displacement of a fiber-air interface with a fiber-liquid interface. Wicking is the spontaneous flow of a liquid in a porous substrate, driven by capillary forces. Because capillary forces are caused by wetting, wicking is a result of spontaneous wetting in a capillary system. Fiber wettability is therefore a prerequisite for the occurrence of wicking. The inter action of liquids with textile fabrics may involve one or several physical phenomena. On basis of the relative amount of liquid involved and the mode of the liquid-fabric contact, the wicking processes can be divided into two groups: wicking from an infinite liquid reservoir (immersion, transplanar wicking, and longitudinal wicking), and wicking from a finite (limited) liquid reservoir (a single drop wicking into a fabric). According to fiber-liquid interactions, each of the four wicking processes can be divided into four categories: capillary penetration only, simultaneous capillary penetration and imbibition by the fibers (diffusion of the liquid into the interior of the fibers), capillary penetration and adsorption of a surfactant on fibers, and simultaneous cap illary penetration, imbibition by the fibers, and adsorption of a surfactant on fibers. When designing tests to simulate liquid-textile interactions of a practical process, it is essential to understand the primary processes involved and their kinetics.

[1]  T. H. Grindstaff,et al.  A Simple Apparatus and Technique for Contact-Angle Measurements on Small-Denier Single Fibers , 1969 .

[2]  R. Young,et al.  Methodology for Studying the Wettability of Filaments , 1975 .

[3]  T. Fort,et al.  A simple method for measuring solid-liquid contact angles , 1963 .

[4]  S. Hartland,et al.  Shape of a drop on a vertical fiber , 1988 .

[5]  H. D. Feldtman,et al.  Wettability of Wool Fibers , 1976 .

[6]  Y. Hsieh,et al.  Liquid Wetting, Transport, and Retention Properties of Fibrous Assemblies: Part I: Water Wetting Properties of Woven Fabrics and Their Constituent Single Fibers , 1992 .

[7]  D. Brandreth,et al.  Dynamic contact angles and contact angle hysteresis , 1977 .

[8]  M. J. Rosen.  Surfactants and Interfacial Phenomena , 1978 .

[9]  S. Chwastiak,et al.  A wicking method for measuring wetting properties of carbon yarns , 1973 .

[10]  Abraham Marmur,et al.  The radial capillary , 1988 .

[11]  Y. Hsieh,et al.  Liquid Wetting, Transport, and Retention Properties of Fibrous Assemblies: Part II: Water Wetting and Retention of 100% and Blended Woven Fabrics , 1992 .

[12]  L. Grader,et al.  On the modelling of the dynamic contact angle , 1986 .

[13]  Motoi Minagawa,et al.  Spreading of Liquids in Textile Assemblies , 1986 .

[14]  K. Gotoh,et al.  Estimation of surface free energies and hamaker constants for fibrous solids by wetting force measurements , 1990 .

[15]  P. V. Remoortere,et al.  The kinetics of wetting in a capillary , 1990 .

[16]  A. Schwartz,et al.  The Migration of Liquids in Textile Assemblies , 1959 .

[17]  R. H. Dettre,et al.  Contact Angle Hysteresis: II. Contact Angle Measurements on Rough Surfaces , 1964 .

[18]  S. G. Mason,et al.  An experimental study of some effects of solid surface roughness on wetting , 1980 .

[19]  S. Hornby,et al.  Surface Wettability Scanning of Long Filaments by a Liquid Membrane Method , 1987 .

[20]  R. Shuttleworth,et al.  The spreading of a liquid over a rough solid , 1948 .

[21]  E. Chibowski,et al.  Theory and practice of thin-layer wicking , 1993 .

[22]  F. Fowkes.  Role of Surface Active Agents in Wetting , 1953 .

[23]  A. W. Neumann,et al.  Techniques of Measuring Contact Angles , 1979 .

[24]  P. R. Lord,et al.  A Comparison of the Performance of Open-End and Ring Spun Yarns in Terry Toweling , 1974 .

[25]  T. Johnson,et al.  The penetration of aqueous surfactant solutions and non-newtonian polymer solutions into paper by capillary action , 1971 .

[26]  R. H. Dettre,et al.  Contact Angle Hysteresis: I. Study of an Idealized Rough Surface , 1964 .

[27]  B. Miller,et al.  Dynamic Measurements of the Wetting of Single Filaments , 1970 .

[28]  P. D. Lark,et al.  An experimental study of the washburn equation for liquid flow in very fine capillaries , 1979 .

[29]  T. Kawase,et al.  Spreading of Liquids in Textile Assemblies Part II: Effects of Softening on Capillary Spreading , 1986 .

[30]  B. Carroll.  The accurate measurement of contact angle, phase contact areas, drop volume, and Laplace excess pressure in drop-on-fiber systems , 1976 .

[31]  B. Miller,et al.  Evaluation of Wettability from Capillary Rise between Filaments , 1969 .

[32]  M. J. Rosen,et al.  Dynamic surface tension of aqueous surfactant solutions: 2. Parameters at 1 s and at mesoequilibrium , 1990 .

[33]  A. Marmur.  Penetration and displacement in capillary systems of limited size , 1992 .

[34]  L. Agbezuge,et al.  A diffusion approach for modelling penetration of aqueous liquids into paper , 1994 .

[35]  S. P. Rowland,et al.  Some Interactions of Water-Soluble Solutes with Cellulose and Sephadex , 1976 .

[36]  T. Fujii,et al.  Spreading of Liquids in Textile Assemblies , 1988 .

[37]  George L Batten.  Liquid imbibition in capillaries and packed beds , 1984 .

[38]  M. Koishi,et al.  Kinetic studies on liquid penetration in polyester nonwoven fabric , 1984 .

[39]  S. Tejada,et al.  Studies of dynamic contact angles on solids , 1972 .

[40]  George B. Sproles,et al.  Absorbency of Terry Towels: A Comparative Evaluation of Test Methods , 1979 .

[41]  Charles F. Goldthwait,et al.  Measurement and Theory of Absorbency of Cotton Fabrics , 1950 .

[42]  S. P. Rowland,et al.  Spreading and Imbibition of Durable Press Reagent Solutions in Cotton-Containing Fabrics , 1985 .

[43]  M. Schrader,et al.  Modern Approaches to Wettability , 1992 .

[44]  M. J. Schick,et al.  Surface Characteristics of Fibers and Textiles: Part Ii: , 1977 .

[45]  R. Good.  The rate of penetration of a fluid into a porous body initially devoid of adsorbed material (1, 2) , 1973 .

[46]  T. Grindstaff,et al.  A Common Error in Contact-Angle Measurements on Fibers Using the Level-Surface Method , 1975 .

[47]  E. Kissa.  Wetting and detergency , 1981 .

[48]  J. J. De Boer,et al.  The Wettability of Scoured and Dried Cotton Fabrics , 1980 .

[49]  J. Szekely,et al.  The rate of capillary penetration and the applicability of the washburn equation , 1971 .

[50]  Richard Lucas,et al.  Ueber das Zeitgesetz des kapillaren Aufstiegs von Flüssigkeiten , 1918 .

[51]  T Gillespie,et al.  The spreading of low vapor pressure liquids in paper , 1958 .

[52]  T. L. Ward,et al.  Testing Based on Wettability to Differentiate Washed and Unwashed Cotton Fibers , 1985 .

[53]  E. Kissa,et al.  Capillary sorption in fibrous assemblies , 1981 .

[54]  H. Lange.  Zur Kinetik der Grenzflächenaktivität , 1954 .

[55]  R. Good,et al.  Rate of penetration of a fluid into a porous body , 1976 .

[56]  I. Graf.  Detergency, Theory and Technology (Surfactant Science Series, vol. 20). Hrsg. von W. G. Gutler und E. Kissa; M. Dekker, Inc., New York 1987, 560 S., gebunden, US‐$ 99.75 (USA und Canada) US‐$ 119.50 (alle anderen Länder) , 1988 .

[57]  A. Cazabat,et al.  Dynamics of wetting: Effects of surface roughness. , 1986 .

[58]  W. Zisman,et al.  Contact angle, wettability, and adhesion , 1964 .

[59]  A. Adamson.  Physical chemistry of surfaces , 1960 .

[60]  Bernard Miller,et al.  Spontaneous Transplanar Uptake of Liquids by Fabrics , 1984 .

[61]  M. W. Roberts,et al.  The Critical Surface Tension of Wool , 1979 .

[62]  P. R. Harnett,et al.  A Survey and Comparison of Laboratory Test Methods for Measuring Wicking , 1984 .

[63]  John P. Mutchler,et al.  Rapid Estimation of the Critical Surface Tension of Fibers , 1969 .

[64]  J. Berg,et al.  The effect of surfactants on wicking flow in fiber networks , 1988 .

[65]  A. Jeje,et al.  Rates of spontaneous movement of water in capillary tubes , 1979 .