Dispersed phase particle size

McHugh, T.H., and Krochta, J.M. (1994b). Dispersed phase particle size effects on water-vapor permeability of whey protein beeswax edible emulsion films. J. Food Processing Preservation. 18, 173-188. 

Let s calculate the dispersed phase particle size from Eq. 10.44 ... 

Thermo.set Formulation Morphology Dispersed Phase Particle Size (fim)... 

In addition to common separation mechanisms for die various combinations of phme segregation, the approach to solving problems also is similar. In ench case, the quantity of each phase mest be known, as well as the density of each phase, the viscosity of the continuous phase, the dispersed-phase particle size, and die desired specification for the quality of the finished separation. In most cases, diis involves sampling and expari mental work. 

Nature of the Interface. The most important aspect is the nature of the matrix-dispersed phase interface which determines the adhesion between these two phases. The anchoring effect between two phases with a block copolymer located at the interface depends essentially on the amount of Cop in the blend, the amount of elastomer, and the particle size of the dispersed phase. Particle size, in turn, depends on the molecular characteristics of homopolymer and Cop, as well as on the composition of the blend. In order to take into account these... 

The formation of optimum dispersed phase particle size and the stabilization of the resulting blend morphology are critical if the blend is to have optimum properties and in particular good mechanical properties. Eigure 5.2 shows a morphology generated by processing an uncompatibilized... 

Table 5.3 shows dramatic examples of the stabilization of dispersed phase morphology in the presence of a compatibilizing copolymer. In all examples essentially no change in dispersed phase particle size occurs after annealing under static conditions for up to 90 min. The data shown in this Table 5.3 should be compared with those presented in Table 5.2, where the dispersed phase mean dimensions were presented for similar, uncompatibilized blends. 

EMAA ionomer (0-30 parts) dispersed phase particle size vs. interfacial modifier concentration / emulsification curves / effects of mixing protocol / also blends containing PP in place of HDPE Favis, 1988... 

PA-66 (85) / acid-functionalized EP (15) TSE at 230-280°C / rheology / SEM / dispersed phase particle size vs. interfacial tension / effect of component viscosity ratio Wu, 1987... 

Favis [1994] and Willis andFavis [1988] prepared compatibilized PA blends with PP and carboxylic acid-functionalized EMAA ionomer. Blends containing 90-10 parts PA-6, 0-30 parts EMAA ionomer, and 10-90 parts PP were combined in an internal mixer at 250°C and characterized by torque rheometry and SEM. Dispersed phase particle size vs. interfacial modifier concentration was determined. Emulsification curves were constructed. Effects of mixing protocol on blend properties were studied. Blends were also prepared containing HOPE in place of PP. 

B-AN-AA (20) / S-IPO (80) or combined with unfunctionalized PS internal mixer at 185°C torque vs. functionalization concentration / morphology / mechanical properties / detrimental effect of >5% IPO (too small dispersed phase particle size) Fowler and Baker, 1988... 

Bedenko et al [275 - 276] have, to a certain extent, developed the ideas by Rehbinder and Urjev, of the effect of disperse phase particle size on the strength of the structure and viscosity T using HWCS as an example. In mixtures of fine (e.g. df =21.8 pm) and coarse coal fraction (e.g. dc = 180 pm), the finely divided fraction as a continuous medium can completely fill out the entire void volume between the particles of the coarse fraction. Experimental data have shown that at dc/df > 4, a synergistic effect of the packing density of particles in the mixture is... 

For verification of adequacy of suggested method for disperse phase particles sizes calculation experimental investigation of emulsification process in turbulent flows limited by impenetrable wall of divergent-convergent design in hexane-water (continuous phase) system was carried out (see 2.2.7). Six-sectional tubular apparatus differ in canal geometry were used (Table 2.1). 

It is obvious from comparison of experimental and calculation data (Fig. 3.33) that the ratio (3.45) describes the influence of w on disperse phase particles sizes ds2 with a fair degree of accuracy (average discrepancy is 6%). At the same time there is a definite interval in volumetric rate of hetero-phase flows to which the divergent-convergent canal with optimal ratio dd / dc is corresponded. The zone of fiber movement of hetero-phase flows limits this interval from below,... 

Thus, from the above and the fact that the dispersed phase particle size depends Unearly on the waterglass content, we conclude that the interphase boimdary area is constant and does not depend on the volumetric content of sodium waterglass in the composite. 

Effect of organoclay content on dispersed phase particle size in a maleated EPR/PP 70/30 blend. 

PA-6/HDPE-g-MA Dispersed phase particle size characterized by ultrasonic velocity and attenuation as function of HDPE-g-MA amount Wang et al. 2012a... 

Recently, Tiwari and Paul (2011 a) carried out detailed studies on the effect of PP viscosity on the dispersed phase particle size, stability of dispersed phase morphology upon annealing, phase inversion behavior, and changes in the mechanical properties of PP/PP-g-MA/MMT/PS nanocomposites prepared with different molecular weight grades of PP. PP-g-MA was added to PP to facilitate dispersion of organoclay in the nonpolar PP moreover, it also provides better reinforcement effect when PP forms the continuous phase. 

Fig. 17.2 Effect of PS content and PP melt viscosity on the dispersed phase particle size for (a) blends without MMT and (b) blends with MMT. PS is the dispersed phase when the PS content is below 50 wt% while the matrix is PP/PP-g-MA or PP/PP-g-MA/...

Effects of MMT and Matrix Molecular Weight on Dispersed Phase Particle Size... 

---