ABSTRACT
T/K = 298.15 _______________________________________________________________________________
Total system Bottom phase Top phase wA wB wC wD wA wB wC wD wA wB wC wD _______________________________________________________________________________
0.8650 0.0500 0.0700 0.0150 0.8943 0.0860 0.0000 0.0197 0.8065 0.0038 0.1780 0.0117 0.8650 0.0500 0.0700 0.0150 0.8955 0.0860 0.0005 0.0180 0.8418 0.0038 0.1430 0.0114 0.8430 0.0580 0.0840 0.0150 0.8939 0.0987 0.0004 0.0070 0.7834 0.0007 0.2077 0.0082 0.8580 0.0430 0.0840 0.0150 0.9017 0.0807 0.0000 0.0176 0.8088 0.0015 0.1799 0.0098 0.8790 0.0440 0.0620 0.0150 0.9133 0.0696 0.0004 0.0167 0.8242 0.0028 0.1648 0.0082 0.8940 0.0290 0.0620 0.0150 0.9297 0.0520 0.0000 0.0183 0.8763 0.0070 0.1044 0.0123 0.8640 0.0440 0.0620 0.0300 0.9000 0.0650 0.0000 0.0350 0.8109 0.0023 0.1650 0.0218 0.8850 0.0500 0.0500 0.0150 0.9141 0.0700 0.0000 0.0159 0.8249 0.0031 0.1620 0.0100 0.9000 0.0350 0.0500 0.0150 0.9251 0.0560 0.0015 0.0174 0.8622 0.0076 0.1188 0.0114 0.8850 0.0600 0.0400 0.0150 0.9066 0.0780 0.0000 0.0154 0.8252 0.0035 0.1630 0.0083 0.9000 0.0450 0.0400 0.0150 0.9215 0.0627 0.0010 0.0148 0.8471 0.0067 0.1366 0.0096 0.8700 0.0600 0.0400 0.0300 0.8832 0.0782 0.0000 0.0386 0.7968 0.0015 0.1830 0.0187 _______________________________________________________________________________
________________________________________________________________________ Polymer (B): poly(ethylene glycol) 1989KAN Characterization: Mn/g.mol−1 = 900, Mw/g.mol−1 = 1000 Polysciences, Inc., Warrington, PA Solvent (A): water H2O 7732-18-5 Polymer (C): dextran Characterization: Mn/g.mol−1 = 60700, Mw/g.mol−1 = 167000 Sigma Chemical Co., Inc., St. Louis Polymer (D): poly(ethylene glycol) Characterization: Mn/g.mol−1 = 4760, Mw/g.mol−1 = 5000 Polysciences, Inc., Warrington, PA Polymer (E): poly(ethylene glycol) Characterization: Mn/g.mol−1 = 20750, Mw/g.mol−1 = 22000 Polysciences, Inc., Warrington, PA
Type of data: coexistence data (tie lines)
T/K = 293.15
Comments: The ratio of PEG/dextran in the total system was kept constant at 4.2 wt%/4.2 wt%. _______________________________________________________________________________
Total system Bottom phase Top phase wB wC wD wE wB wC wD wE wB wC wD wE _______________________________________________________________________________
0.0126 0.0420 0.0084 0.0210 0.0144 0.0080 0.0132 0.0341 0.0112 0.0800 0.0072 0.0039 0.0000 0.0420 0.0084 0.0336 0.0000 0.0017 0.0140 0.0504 0.0000 0.1080 0.0060 0.0040 0.0063 0.0420 0.0063 0.0294 0.0069 0.00313 0.0097 0.0457 0.0051 0.1020 0.0043 0.0000 0.0000 0.0420 0.0063 0.0357 0.0000 0.0000 0.0100 0.0543 0.0000 0.1183 0.0037 0.0000 _______________________________________________________________________________ Polymer (B): poly(ethylene glycol) 1993SAR Characterization: Mn/g.mol−1 = 3970, Mw/g.mol−1 = 4490, Mz/g.mol−1 = 4980, Merck KGaA, Darmstadt, Germany Solvent (A): water H2O 7732-18-5 Polymer (C): poly(ethylene glycol) Characterization: Mn/g.mol−1 = 5775, Mw/g.mol−1 = 6440, Mz/g.mol−1 = 7440, Merck KGaA, Darmstadt, Germany Polymer (D): poly(ethylene glycol) Characterization: Mn/g.mol−1 = 7385, Mw/g.mol−1 = 8640, Mz/g.mol−1 = 9760, Aldrich Chem. Co., Inc., Milwaukee, WI
Type of data: cloud points (closed loop miscibility gap)
wB/wC/wD = 0.389/0.513/0.098 was kept constant wB + wC + wD 0.0105 0.0249 0.0531 0.1077 0.1489 0.2198 0.3012 0.3402 T/K 410.45 407.55 405.35 403.55 402.55 404.85 410.65 416.95 T/K 524.65 543.45 546.65 544.45 544.15 539.45 536.55 534.15
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wB + wC + wD 0.3914 T/K 408.35 T/K 528.15
Comments: The corresponding molar mass averages are given by Mn = 5000 g/mol, Mw = 6000 g/mol, and Mz = 7080 g/mol. Polymer (B): poly(ethylene glycol) 1993SAR Characterization: Mn/g.mol−1 = 2750, Mw/g.mol−1 = 3110, Mz/g.mol−1 = 3545 Aldrich Chem. Co., Inc., Milwaukee, WI Solvent (A): water H2O 7732-18-5 Polymer (C): poly(ethylene glycol) Characterization: Mn/g.mol−1 = 3970, Mw/g.mol−1 = 4490, Mz/g.mol−1 = 4980 Merck KGaA, Darmstadt, Germany Polymer (D): poly(ethylene glycol) Characterization: Mn/g.mol−1 = 10500, Mw/g.mol−1 = 12490, Mz/g.mol−1 = 14240 Aldrich Chem. Co., Inc., Milwaukee, WI
Type of data: cloud points (closed loop miscibility gap)
wB/wC/wD = 0.524/0.197/0.279 was kept constant wB + wC + wD 0.0106 0.0246 0.0528 0.0986 0.1440 0.1909 0.2954 0.3405 T/K 402.65 401.05 399.85 401.05 402.05 404.35 409.05 414.55 T/K 536.35 549.45 557.35 552.65 545.55 541.85 531.55 528.85
wB + wC + wD 0.3825 T/K 418.55 T/K 523.15
Comments: The corresponding molar mass averages are given by Mn = 3750 g/mol, Mw = 6000 g/mol, and Mz = 9960 g/mol. Polymer (B): poly(ethylene glycol) 1993SAR Characterization: Mn/g.mol−1 = 2750, Mw/g.mol−1 = 3110, Mz/g.mol−1 = 3545, Aldrich Chem. Co., Inc., Milwaukee, WI Solvent (A): water H2O 7732-18-5 Polymer (C): poly(ethylene glycol) Characterization: Mn/g.mol−1 = 3970, Mw/g.mol−1 = 4490, Mz/g.mol−1 = 4980, Merck KGaA, Darmstadt, Germany Polymer (D): poly(ethylene glycol) Characterization: Mn/g.mol−1 = 5775, Mw/g.mol−1 = 6440, Mz/g.mol−1 = 7440, Merck KGaA, Darmstadt, Germany Polymer (E): poly(ethylene glycol) Characterization: Mn/g.mol−1 = 10500, Mw/g.mol−1 = 12490, Mz/g.mol−1 = 14240, Aldrich Chem. Co., Inc., Milwaukee, WI
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Type of data: cloud points (closed loop miscibility gap)
wB/wC/wD/wE = 0.245/0.331/0.264/0.160 was kept constant wB + wC + wD + wE 0.0101 0.0251 0.0511 0.0972 0.1320 0.2025 0.3011 0.3361 T/K 406.65 401.45 400.95 402.85 405.25 406.15 409.15 411.15 T/K 533.45 549.15 551.85 549.35 544.65 541.15 533.85 532.65
wB + wC + wD + wE 0.3818 T/K 417.05 T/K 527.15
Comments: The corresponding molar mass averages are given by Mn = 4285 g/mol, Mw = 6000 g/mol, and Mz = 8580 g/mol.
