Farshad Rahimpour and Ali Reza Baharvand
Phase Equilibrium in Aqueous Twophase Systems Containing Poly (propylene glycol) and Sodium Citrate at Different pH
621 - 624
2009
3
11
International Journal of Chemical and Molecular Engineering
https://publications.waset.org/pdf/4396
https://publications.waset.org/vol/35
World Academy of Science, Engineering and Technology
The phase diagrams and compositions of coexisting
phases have been determined for aqueous twophase systems
containing poly(propylene glycol) with average molecular weight of
425 and sodium citrate at various pH of 3.93, 4.44, 4.6, 4.97, 5.1,
8.22. The effect of pH on the saltingout effect of poly (propylene
glycol) by sodium citrate has been studied. It was found that, an
increasing in pH caused the expansion of twophase region.
Increasing pH also increases the concentration of PPG in the PPGrich
phase, while the saltrich phase will be somewhat mole diluted.
Open Science Index 35, 2009