Function of mixing

Fig. 16.3 The calculated trNOE intensity as a function of mixing time without (left part) and with (right part) spin diffusion through intermole-cular cross-relaxation. For the calculations the distance between the protons was assumed to be 2 A, and the rotational correlation time used was 0.1 ns for the free ligand and 10 ns for the pro-...

Figure 1.19. Example 1.3. Degree of mixing as a function of mixing time...

Procedure. A gram of the mineral was preconditioned for 90 minutes with 5cc of a 0.2 kmol/m sodium chloride solution at 75 C on a wrist action shaker. Then a 5cc solution of known surfactant concentration is added and allowed to shake for four hours. Four hours mixing was found to be sufficient to reach equilibrium from adsorption test conducted as a function of mixing time. The... 

The effects of particle size on detonation rate have been studied by observing the functioning of mixes of various granulations in pressed expl charges, and the influence of cryst size on the props of castings of formulations, such as of Comp B. 

Time. An example of the breakup of agglomerates of solid oxidizer as a function of mixing time is given in Figure 4. 

Eccleston GM. Functions of mixed emulsifiers and emulsifying waxes in dermatological lotions and creams. Colloid Surf A 1997 123-124, 169-182. 

Figure 5.6 Mean square of differences between consecutive Raman spectra as a function of mixing time of a binary system. Reprinted from Vergote etal. (2004)62 with permission from Elsevier.

In Example 2.26, we have obtained the linear regression model for dynamic viscosity y, P, as a function of mixing speed X3, min"1 and mixing time X2, min of composite rocket propellant. To determine the conditions of minimal viscosity, a method of steepest ascent has been applied. This method has defined the local optimum region that has to be described by a second-order model. Conditions of the factor variations are shown in Table 2.146. 

Finally, we have the expression for the Helmholtz function of mixing AmixF,... 

Figure 3.28 Fraction of undispersed carbon black, larger than 9 /im, as a function of mixing time inside a Banbury mixer. The open circles denote experimental results and the solid line a theoretical prediction. The broken line denotes the fraction of aggregates of size below 500 nm.

FIGURE 10.2 Resistivity of cathode mix as a function of mixing time. The mixing should be stopped in the optimum range to avoid changes in the distribution in the active mix as time continues. Each mixer will have its own unique shape and time of mixing. The arrows indicate the point in time that a sample was taken to determine resistivity of the mix. 

Note that the value of KdSiSs depends on the mole fraction x, and therefore will vary with the composition of the mixed solid. Unlike Kdis for a pure solid phase, Kd must be measured as a function of mixed solid composition in order to apply Eq. 3.29 to all possible states of stoichiometric saturation. 

Considerable information concerning structural effects on aqueous salt solutions has been provided by studies of the properties of mixed solutions (Anderson and Wood, 1973). In a mixed salt solution prepared by mixing YAm moles of a salt MX (molality m) with Yhm moles of a salt NX (molality m) to yield m moles of mixture in 1 kg of solvent, if W is the weight of solvent, the excess Gibbs function of mixing Am GE is given by (19) where GE is the excess function for... 

The importance of the excess entropy of mixing in aqueous mixtures explains why many of these systems show phase separation with a lower critical solution temperature (LCST). This phenomenon is rarer—though not unknown—in non-aqueous mixtures (for an example, see Wheeler, 1975). The conditions for phase separation at a critical temperature can be expressed in terms of the excess functions of mixing (Rowlinson, 1969 Copp and Everett, 1953). 

Figure 31. Excess thermodynamic functions of mixing for ethyl alcohol + water mixtures at 298-15 K.

The TNAN aqueous mixtures are characterized by the following conditions for the excess molar thermodynamic functions of mixing GE <0 and i//E > T- SE. ... 

The etching rates as a function of mixing ratio with GR-950 to OFPR-800 exposed to an oxygen RF discharge are examined. Curves obtained by plotting film thickness of relief image as a function of... 

Figure 21 Saturation transfer experiment the downfield branch of the Pa doublet of 1 was inverted using a DANTE selective excitation pulse. The exchange of the magnetization was followed as a function of mixing time. T was found to be 1.26 s and exchange = 2.85 s at 300 K. (From J. M. Brown, and P. A. Chaloner and G. A. Morris (1987)/. Chem. Soc. Perkin Trans. 2, 1583. Reproduced by permission of The Royal Society of Chemistry)...

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