Table 1.
Chemical compositions of synthesised linear polyurethanes
| Sample No. | Type of diisocyanate | Type of polyol (molecular weight) | Type of chain extender | Fluorine content (wt.%) | Type of solvent | Structural parameter | |
|---|---|---|---|---|---|---|---|
| κ theor | κ exp | ||||||
| 1 | MDI | POG (2000) | N-BDA | 0 | Chlorobenzene | 47.0 | 45.7 |
| 2 | MDI | POG (2000) | N-BDA | 0 | 1,4-dioxane | 47.0 | 45.9 |
| 3 | MDI | POG (2000) | N-PhDA | 0 | 1,4-dioxane | 47.4 | 45.1 |
| 4 | MDI | POG (2000) | N-MDA | 0 | 1,4-dioxane | 49.3 | 47.3 |
| 5 | MDI | POG (2000) | N-MDA | 0 | Chlorobenzene | 49.5 | 48.0 |
| 6 | MDI | POG (2000) | BD | 0 | 1,4-dioxane | 47.2 | 47.3 |
| 7 | MDI | POG (2000) | BD | 0 | Chlorobenzene | 46.7 | 35.6 |
| 8 | MDI | POG (2000) | N-tert-BDA | 0 | 1,4-dioxane | 46.6 | 45.7 |
| 9 | MDI | POG (600) | TFBD | 5.70 | 1,4-dioxane | – | – |
| 10 | MDI | POG (600) | N-MDA | 0 | 1,4-dioxane | 48.3 | – |
| 11 | MDI | POG (600) | HD | 0 | 1,4-dioxane | 41.0 | 40.0 |
| 12 | MDI | PEA (1000) | N-MDA | 0 | 1,4-dioxane | 34.7 | 28.3 |
| 13 | MDI | PCL (2000) | BD | 0 | 1,4-dioxane | 22.9 | 22.3 |
| 14 | MDI | PCL (530) | TFBD | 6.01 | 1,4-dioxane | – | – |
| 15 | MDI | PCL (530) | BD | 0 | 1,4-dioxane | 25.8 | 29.0 |
| 16 | MDI | PTMO (1000) | BD | 0 | MEK | – | – |
| 17 | TDI | POG (2000) | BD | 0 | 1,4-dioxane | 48.1 | 49.1 |
| 18 | TDI | POG (600) | TFBD | 5.88 | 1,4-dioxane | – | – |
| 19 | TDI | POG (600) | BD | 0 | 1,4-dioxane | 46.4 | 41.7 |
| 20 | HDI | POG (2000) | N-BDA | 0 | 1,4-dioxane | 49.8 | 47.2 |
| 21 | HDI | POG (2000) | N-BDA | 0 | 1,4-dioxane | 49.8 | 46.8 |
| 22 | HDI | POG (2000) | N-BDA | 0 | Chlorobenzene | 49.8 | 46.8 |
| 23 | HDI | POG (2000) | BD | 0 | 1,4-dioxane | 50.0 | 46.8 |
| 24 | IPDI | POG (2000) | N-BDA | 0 | Chlorobenzene | 46.4 | 41.7 |
| 25 | IPDI | POG (2000) | N-BDA | 0 | 1,4-dioxane | 46.4 | 43.4 |
| 26 | IPDI | POG (2000) | N-MDA | 0 | Chlorobenzene | 47.3 | 43.5 |
| 27 | IPDI | POG (2000) | HD | 0 | 1,4-dioxane | 45.7 | 43.3 |
| 28 | IPDI | POG (2000) | HD | 0 | 1,4-dioxane | 45.7 | – |
| 29 | IPDI | POG (2000) | HD | 0 | 1,4-dioxane | 46.4 | 42.9 |
| 30 | IPDI | POG (2000) | BD | 0 | 1,4-dioxane | 46.5 | 43.6 |
| 31 | IPDI | POG (2000) | BD | 0 | Chlorobenzene | 46.5 | 42.7 |
| 32 | IPDI | POG (600) | N-MDA | 0 | 1,4-dioxane | 46.7 | 35.6 |
| 33 | IPDI | POG (600) | N-MDA | 0 | Chlorobenzene | 46.7 | 43.9 |
| 34 | IPDI | PEA (1000) | N-MDA | 0 | 1,4-dioxane | 34.5 | 30.0 |
MDI diphenylmethane diisocyanate, TDI toluene diisocyanate, HDI hexamethylene diisocyanate, IPDI isophorone diisocyanate, POG polyoxyethylated polyols, PEA poly(ethylene adipate), PCL polycaprolactone, N-MDA N-methyldiethanolamine, N-BDA N-butyldiethanolamine, N-PhDA N-phenyl-diethanolamine, BD 1,4-butanediol, HD 1,6-hexanediol, TFBD 2,2,3,3-tetrafluoro-1,4-butanediol, N-tert-butyldiethanolamine (N-tert-BDA), MEK butanone-2