Research Article
Synthesis and Properties of Flexible Polyurethane Using Ferric Catalyst for Hypopharyngeal Tissue Engineering
Table 2
The composition and appearance of CPUs.
| Cross-linked polyurethane | Macrodiols | Diisocyanate | Chain extender | State at room temperature | Tg (°C) | (°C) |
| CPU 1 | PCEG 1 | HDI | TMP | Hard | −45 | 46 | CPU 2 | PCEG 2 | HDI | TMP | Frangibility | −48 | 44 | CPU 3 | PCEG 3 | HDI | TMP | Elasticity | −51 | 38 |
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