Phase behaviour of the ternary system {poly(ε-caprolactone)+carbon dioxide+dichloromethane}

Chemical characterization and phase behaviour of grape seed oil in compressed carbon dioxide and ethanol as co-solvent

“…The experimental apparatus and procedure have been described in detail in a variety of studies [25][26][27][28][29][30][31][32] and were extensively validated [33][34][35][36]. The experimental apparatus was employed to conduct the experiments up to 20.6 MPa and T = 343.15 K. After preliminary tests, the molar ratio of ethanol to CO 2 was kept constant at 1:3 for all experimental measurements, which provided proper visualization of phase transitions and required an adequate time for solubilization.…”

Phase Behavior of (Co2 + Dichloromethane +Passion Fruit Seed Oil) and (Co2 +Dichloromethane + Passion Fruit Seed Oil + Plga)systems

“…Comparing results from systems 1 and 2 presented on Figure 1, it can be observed that at both temperatures the addition of PLGA reduced the transition pressures unlike reported in literature to other types of polymers (Kalogiannis and Panayiotou, 2005;Bender et al, 2010).…”

“…An increase in the CO 2 concentration causes a correspondent decrease in solvent polarity, diminishing the socalled solvent power of the mixture, which leads to higher pressure liquid-liquid phase transition values. In other words, at low CO 2 contents, the system is far more miscible and only vaporliquid transitions are observed (Bender et al, 2010). Also, for a system exhibiting LCST behavior, an increase in CO 2 content or temperature will result in the expansion of the system.…”

Determinação De Dados Experimentais De Equilíbrio De Fases À Alta Pressão Do Sistema Dióxido De Carbono Supercrítico + Etanol + L-Lactídeo

“…As medidas experimentais de equilíbrio de fases a altas pressões foram conduzidas em uma célula de volume variável com visualização, baseada no método estático sintético, sendo que a unidade utilizada é similar àquelas apresentadas por Lanza (2004), Bender et al (2010), Debien et al (2013). Brevemente, o aparato consiste de uma célula de volume variável, com volume máximo interno de 0,027 dm 3, com duas janelas de safira para a observação visual, um transdutor de pressão (Smar LD 301), com uma precisão de ± 0,03 MPa, um programador portátil (Smar, HT 201) e uma bomba seringa (ISCO 260D).…”