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. Author manuscript; available in PMC: 2015 Nov 5.
Published in final edited form as: Adv Funct Mater. 2014 Aug 14;24(41):6509–6515. doi: 10.1002/adfm.201401302

Figure 1.

Figure 1

Experimental phase diagram of an ATPS with PEG35k and DEX500k as phase-forming polymers. The diagram shows a binodal curve above which combinations of concentrations of two polymers give rise to a two-phase system (top inset image). Below the binodal curve, phase separation does not happen (bottom inset image). With an initial concentration of 6.4% DEX and 5% PEG (green point), a two-phase system with specific compositions of top and bottom phases forms (blue points). The intersection of the tie line and the binodal curve shows the concentration of top PEG-rich phase and bottom DEX-rich phase.