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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/5200

Title: Calculation of pressure−temperature diagrams and distance for phase transition in polyethylene solutions
Other Titles: Industrial & Engineering Chemistry Research
Authors: Costa, Glória Meyberg Nunes
Kislansky, S.
Guerrieri, Y.
Pessoa, F. L. P.
Melo, Silvio Alexandre Beisl Vieira de
Embiruçu, Marcelo
Issue Date: 2010
Abstract: Understanding the phase behavior of polymer solutions is of great theoretical and practical importance. Pressure versus temperature (P−T) isopleths allow one to determine the number of phases present at a given T, P, and overall mixture composition. In this work, the PC-SAFT (perturbed-chain statistical associating fluid theory) equation of state (EOS) was applied to simulate the curves that describe the boundaries between several distinct regions depicted in P−T isopleths. A new strategy was used, and the simulation results were found to show good agreement with experimental cloud-point isopleth data from the literature. In addition, a method was developed to calculate the distance between an operating point (pressure and temperature) and the corresponding point in the interface for fixed molecular weight and weight fraction of the polymer.
Description: Texto completo: acesso restrito. p. 12242–12253
URI: http://www.repositorio.ufba.br/ri/handle/ri/5200
Appears in Collections:Artigos Publicados em Periódicos (PEI)

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