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Determining the Surface Free Energy of Cellulose Materials with the Powder Contact Angle Method
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ABSTRACT
Different treatment processes such as alkaline washing, bleaching, and slack-mercerization are used to improve the sorption characteristics of cellulose fibers. The differences between the sorption properties of cellulose fibers are measured with tensiometry, and their sorption velocities are measured with liquids of different polarities. From those measurements, contact angles are determined using the Washburn equation. The surface free energy of the cellulose fibers is determined from contact angle data obtained with the Owens-Wendt-Rabel-Kaeble approximation. Results show that ...
Related newspaper, magazine, and trade journal articles from HighBeam Research
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Influence of Repellent Finishing on the Surface Free Energy of Cellulosic Textile Substrates
; ...the textile's surface free energy, accompanied...increase of the contact angle of liquids on...determine solid surface free energy [21...experimental methods, contact angle measurements...From them, solid surface free energy can be...models used for ...
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Bubble formation and detachment on nonwetted surfaces
; ...finite element method. The receding contact angle determined the shape of a bubble growing...injecting air into it while the advancing contact angle determined the shape of a bubble shrinking...determined by using neither the advancing contact angle nor the receding contact ...
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The study of wetting and adhesion by contact angle measurement.
; ...We describe below the Kruss DSA10 Contact Angle Measuring System, a recent development...liquid and a solid are identified by the contact angle between the two. The critical surface...energies that are calculated with the contact angle data are characteristic measurements...
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Low-rate dynamic contact angles on polystyrene and the determination of solid surface tensions.
; ...sub.sl] (1) which interrelates the Young contact angle with the interfacial tensions of the liquid-vap...interfaces. [[Theta].sub.Y] is the Young contact angle, i.e. a contact angle that can be used in conjunction with Young...
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Surface characteristics of hydrosilylated polypropylenes: effect of co-catalyst and reaction temperature.
; ...fillers, or polymer blends. In these processes, the surface physicochemical properties of PP, such as surface tension (surface free energy), permeability, surface microstructure...the wettability or hydrophilicity of a surface. contact angle measurement is often used. ...
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Importance of Surface Tension Characterization for Food, Pharmaceutical and Packaging Products: A Review
; ...surface tension of solids, except the contact angle measurements combined with an appropriate...developed the basis of the theory of contact angle some two hundred years ago, measurements...quality. Keywords surface tension, contact angle, wettability, packaging, food, polymer...
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Adsorption of various surfactants in aqueous solutions and their application in water-based inks.
; ...surfactant on the surface tension, contact angle and rheology of water-base ink was...surfactants are differently affected the contact angle of both blue and black inks; S 104 showed the lowest contact angle of the blue ink, while S TG showed...
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Functional additives can improve newsprint pressroom runnability
; ...runnability and printability, such as: contact angle, dynamic dimensional changes in a short...differences between the top and bottom contact angle can be due to portions of the furnish...WATER RESISTANCE IS LOWER FOR DIP. The contact angle for water was used to measure the effect...
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The contact angle between liquid iron and a single crystal, alumina substrate at 1873 K: Effects of oxygen and droplet size
; The contact angle for iron on a single-crystal alumina...size. At constant droplet size, the contact angle was a strong function of the partial...pressures less than 10^sup -18^ atm, the contact angle markedly decreased as a zone of reactive...
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Surface Analysis System.(AST Products Inc./Brewer Science Inc)
; VCA (Video Contact Angle) optima is a surface analysis system...user-friendly software to create a contact angle instrument for research or quality...static and dynamic (time-based) contact angle; advancing and receding contact...
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