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