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Effect of polydispersity on the demixing pressures of polyethylene in near- or supercritical alkanes

Kiran, E. ; Xiong, Y. ; Zhuang, W.

Amsterdam : Elsevier

The @Journal of Supercritical Fluids 7 (1994), S. 283-287

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ISSN: 0896-8446

Keywords: demixing ; high-pressure ; n-butane ; n-pentane ; polydispersity ; polyethylene ; supercritical fluid

Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics , Process Engineering, Biotechnology, Nutrition Technology

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1016/0896-8446(94)90016-7

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Solubility of polymers in supercritical fluids (1989)

Kiran, E. ; Saraf, V. P. ; Sen, Y. L.

Springer

International journal of thermophysics 10 (1989), S. 437-446

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ISSN: 1572-9567

Keywords: n-butane ; demixing ; lattice-gas theory ; n-pentane ; polymers ; polystyrene ; supercritical fluids

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract The phase separation of solutions of monodisperse polystyrene samples of molecular weight 9000 in pure and also binary mixtures ofn-butane andn-pentane has been examined under both subcritical and supercritical conditions over the whole concentration range using a variable-volume view cell capable of operating at up to 100 MPa and 500 K. The phase behavior of these solutions is discussed in terms of the coexistence curves and the theoretical predictions based on the mean-field lattice-gas theory.