The HSPs for EF, DMSO, and PLA were obtained from the library of the HSPiP software package (5.0.04, Hansen Solubility Parameters in Practice, https://www.hansen-solubility.com). The HSP values of the hexanal precursor (HP) and benzaldehyde precursor (BP) were predicted by using the Stefanis–Panayiotou method incorporated into HSPiP. The compatibility of HP and BP with a solvent or polymer has been represented by the distance parameter R.
| HSP values MPa1/2 | Spin dope components | ||||||
|---|---|---|---|---|---|---|---|
| EF | DMSO | PLA | Hexanal | Benzaldehyde | HP | BP | |
| δ D | 15.5 | 18.4 | 18.6 | 15.8 | 19.4 | 22.3 | 24.9 |
| δ P | 7.2 | 16.4 | 9.9 | 8.4 | 7.4 | 5.8 | 6.6 |
| δ H | 7.6 | 10.2 | 6 | 5.3 | 5.3 | 3.7 | 4 |
| R(HP) | 14.2 | 14.7 | 8.8 | — | — | — | — |
| R(BP) | 19.2 | 17.4 | 13.2 | — | — | — | — |
| R(PLA) | 11.2 | 11.6 | — | 5.8 | 3.0 | — | — |