Surface energy dispersion component

Polymer Surface energy, total, mJ/m Surface energy, dispersion component, mJ/m Surfaee energy, polar component, mJ/m ... 

Eq. 12 is developed for liquid adsorption on solid, although the molecules adsorbed at infinite dilution do not form an adsorbed liquid film. Schultz et al. demonstrated the validity of this equation, and of the assumptions made, under certain conditions, by comparing the surface energy measured by contact angle method with that determined by gas-solid adsorption on solid surfaces the dispersive component of the surface energy of the liquid equals the surface tension of the alkane probe at the same temperature, i.e., Tl = 7h represents the surface... 

Table 3.16 Surface Energy, Dispersive, and Polar Components of Unmodified/Modified Potassium Titanate Whiskers...

This is the difference between an excess interfacial energy, yi2eAi2, caused by the work needed for dispersing the particles, Wdisp, and the surface energy of component 2 before dispersion, 72 12 (the term y A can be neglected), divided by the average dispersion path length. 

Fig. 17. A schematic of the alkane line obtained by inverse gas chromatography (IGC) measurements. The relative retention volume of carrier gas required to elute a series of alkane probe gases is plotted against the molar area of the probe times the. square root of its surface tension. The slope of the plot is yielding the dispersion component of the surface energy of...

Geometric mean approximation Dispersive and polar components of solid surface energy are found by solving yiv(l +COS0) = 2(y,Xf + 2(y Yl S An extension of GGF equation ysa predicted is significantly higher than the critical surface tension. [84]... 

These equations result from assuming that the total surface energy can be split into the sum of components associated with different types of bonding, for example dispersion plus polar yP (Eqs. 14 and 15), or Lifshitz-van der Waals... 

The work of adhesion between a PSA and a release coating can be expressed in terms of the dispersive and polar components of the surface energies of the PSA and release coating [8]. 

Measurement of the contact angle at a solid-liquid interface is a widely used method for the determination of the surface energy of solid polymers. Fowkes [1] first proposed that the surface energy of a pure phase, y y could be represented by the sum of the contribution from different types of force components, especially the dispersion and the polar components, such that ... 

The polar and dispersion components of the surface energy are generally obtained using two liquids, for example water and formamide. To calculate yf and y/, the following values for y/ and yf were taken [3] ... 

It is known that the possible interaction between two materials 1 and 2 is determined by their surface energies, which consist of two components, dispersive, and specific or polar, y . When hydrogen bonding and acid-base interactions are also involved, the adhesion energy between the two materials, Wa will be" ... 

FIGURE 33.2 Dispersive component of carbon black surface energy as a function of its surface area. 

FIGURE 33.3 Dispersive component of surface energy and dispersion quality in ESBR as a function of heat treatment of N234. 

Table A.4.1 Attractive Forces at Interfaces-surface Energy, y, and London-van der Waals Dispersion Force Component of Surface Energy, y(L) a>...

By the geometric-mean method [106] the total surface free energy (y ), the polar (yl") and dispersive component (yf) of both systems were calculated (Fig. 9.10 e,f). 

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