Research Article
Dispersive Surface Energy and Acid-Base Parameters of Tosylate Functionalized Poly(ethylene glycol) via Inverse Gas Chromatography
Table 2
The variation of free energy of specific interactions,
(kJmol
ā1), between PEG and PEG-Tos and polar probes for studied temperatures.
| | (K) | DCM | Ch | Ac | THF | EA | | PEG | PEG-Tos | PEG | PEG-Tos | PEG | PEG-Tos | PEG | PEG-Tos | PEG | PEG-Tos |
| | 303 | 7.8 | 14.8 | 5.2 | 13.0 | 5.8 | 13.4 | 4.1 | 11.47 | 5.3 | 13.5 | | 313 | 6.7 | 14.0 | 4.9 | 11.7 | 4.9 | 12.7 | 3.2 | 10.7 | 4.6 | 12.4 | | 323 | 7.9 | 13.2 | 6.5 | 10.8 | 6.2 | 12.0 | 4.9 | 9.9 | 6.1 | 11.4 | | 333 | 6.8 | 14.1 | 5.6 | 12.3 | 5.2 | 13.0 | 3.9 | 11.4 | 4.9 | 12.3 | | 343 | 6.0 | 13.3 | 4.8 | 11.6 | 4.5 | 12.3 | 3.2 | 10.7 | 4.2 | 11.4 | | 353 | 5.3 | 12.4 | 4.1 | 10.6 | 3.9 | 11.5 | 2.7 | 9.9 | 3.5 | 10.4 | | 363 | 4.8 | 11.7 | 3.4 | 9.8 | 3.5 | 10.8 | 2.2 | 9.2 | 3.0 | 9.3 | | 373 | 5.9 | 11.1 | 5.0 | 9.1 | 4.7 | 9.8 | 3.7 | 8.5 | 4.4 | 8.4 |
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