کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5178995 | 1502507 | 2016 | 8 صفحه PDF | دانلود رایگان |
- Ternary system of polymer in a mixed solvent in which each binary system has UCST.
- Accurate and rapid measurement of cloud point curves by use of a novel cell.
- Appearance and coalescence of binodals on a composition triangle.
- Three phase separation caused by contact between binodals.
- Binodal surface with a col at which a critical line terminates.
The three phase separation due to contact between binodals was observed for the ternary system nitroethane(NE) + methylcyclohexane(MCH) + polystyrene(PS) with the molecular weight (Mw = 9.64 Ã 104 g/mol). A phase equilibrium experiment was made to determine binodals and three phase triangles on a composition triangle. With decreasing temperature a binodal spreads out from the MCH-PS side of a composition triangle at 48.4 °C and reaches the NE-MCH side at 23.6 °C. Another binodal spreads out from the NE-PS side at 43.6 °C and makes contact with the binodal running between the MCH-PS and NE-MCH sides at 3.3 °C. Simultaneously with the contact the three phase separation appears. The contact occurs at the critical point of the former binodal and at a noncritical point of the latter. The three phase separation usually occurs due to projection of a new binodal from the two phase region.
Tie lines of the binodal near the three phase region in ternary system nitroethane + methylcyclohexane + polystyrene.100
Journal: Polymer - Volume 99, 2 September 2016, Pages 214-221