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Stage growing

The TDCs formed in the thin-film stage grow vertically and laterally. In this process of vertical and lateral growth, a preferentially growing, favorably oriented grain (TDC) increases in width and subsequently joins laterally with other preferentially... [Pg.162]

Adipic acid historically has been manufactured predominantly from cyclohexane and, to a lesser extent, phenol. During the 1970s and 1980s, however, much research has been directed to alternative feedstocks, especially butadiene and cyclohexene, as dictated by shifts in hydrocarbon markets. All current industrial processes use nitric acid in the final oxidation stage. Growing concern with air quality may exert further pressure for alternative routes as manufacturers seek to avoid NO, abatement costs, a necessary part of processes dial use nitric acid. [Pg.34]

As more material is deposited, more surface area is covered by clusters and crystallites, leading to a continuous Aim. The texture of such a Aim depends on the growth kineAcs and the interaction between die nanoparticles. If the randomly oriented nanocrystals formed in an early stage grow at about the same rate, and the crystalUtes nucleated later remain in random orientation, a polycrystaUine Ahn... [Pg.141]

But for some liquids exists the third stage of liquid s penetration inside conical capillary, which was established in [5]. During this stage a channel is filling both from its entrance and from its closed top. Two liquid columns arise and are growing towards each other till the complete channel s filling (fig. 2). The most intriguing pattern can be observed when we exclude direct liquid s access to channel s entrance. It corresponds to the cases... [Pg.615]

For a conserved order parameter, the interface dynamics and late-stage domain growth involve the evapomtion-diffusion-condensation mechanism whereby large droplets (small curvature) grow at tlie expense of small droplets (large curvature). This is also the basis for the Lifshitz-Slyozov analysis which is discussed in section A3.3.4. [Pg.745]

Water-soluble initiator is added to the reaction mass, and radicals are generated which enter the micelles. Polymerization starts in the micelle, making it a growing polymer particle. As monomer within the particle converts to polymer, it is replenished by diffusion from the monomer droplets. The concentration of monomer in the particle remains as high as 5—7 molar. The growing polymer particles require more surfactant to remain stable, getting this from the uninitiated micelles. Stage I is complete once the micelles have disappeared, usually at or before 10% monomer conversion. [Pg.23]

During Stage I the number of polymer particles range from 10 to 10 per mL. As the particles grow they adsorb more emulsifier and eventually reduce the soap concentration below its critical micelle concentration (CMC). Once below the CMC, the micelles disappear and emulsifier is distributed between the growing polymer particles, monomer droplets, and aqueous phase. [Pg.23]

During Stage II the growing particles maintain a nearly constant monomer concentration. The concentration of monomer is particle-size dependent, with smaller particles having lower concentrations (28). [Pg.24]


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See also in sourсe #XX -- [ Pg.180 ]




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