Synthesis and Characterization of Polycaprolactone-Based Polyurethanes for the Fabrication of Elastic Guided Bone Regeneration Membrane

Table 1

The stoichiometry of the polyurethane materials.

Polymers	Materials
	PCL diol	HDI	PEG	EDA
PCL-HDI (1 : 1)	1	1	0	0
PCL-HDI-PEG (2 : 3 : 1)	2	3	1	0
PCL-HDI-PEG (1 : 2 : 1)	1	2	1	0
PCL-HDI-PEG (1 : 3 : 2)	1	3	2	0
PCL-HDI-EDA (2 : 3 : 1)	2	3	0	1
PCL-HDI-EDA (1 : 2 : 1)	1	2	0	1
PCL-HDI-EDA (1 : 3 : 2)	1	3	0	2