Nano-particles formation for pigment red 177 via a continuous supercritical anti-solvent process

Role of phase behavior in micronization of lysozyme via a supercritical anti-solvent process

“…It was suggested that the smaller inside diameters of capillary tube could effectively atomize the solution to form the finer droplets [30,31]. This trend is consistent with the observations of the preparation of pigment particles by Wu et al [32]. Therefore, the capillary tube with inside diameter of 254 m was adopted in the rest of the precipitation experiments.…”

Ultra-fine particles formation of C.I. Pigment Green 36 in different phase regions via a supercritical anti-solvent process

“…The apparatus and the experimental procedure have been detailed elsewhere [1]. The uncertainties of measurements are AE0.1 K, AE0.05 Mpa, and AE0.003 for temperature, pressure, and composition in mole fraction, respectively.…”

“…In addition to Wubbolts et al [9] and Wu et al [1,6], Reverchon et al [10] found that the phase behavior of mixtures in precipitator, rather than the mass transfer, governed SAS precipitation. As shown from their experimental results, submicron particles were produced when the mixtures of solvent þ anti-solvent þ solute in the precipitator were manipulated at supercritical homogeneous states during the particle formation stage.…”

“…The smaller sizes of pigment particles in the dispersion media yield superior color strength, contrast, and transmittance [1]. Therefore, searching for feasible methods and favorable process parameters to produce nano-metric pigment particles with narrow particle size distribution (PSD) is technically important for the industrial applications.…”

“…Micro-metric pigment particles of Bronze Red were produced by Hong et al [5] with a continuous SAS apparatus. Wu et al [1,6] extensively investigated the effects of the SAS process parameters on the PSD of C.I. Pigment Red 177 and C.I.…”