Research Article
Synthesis and Characterization of Polycaprolactone-Based Polyurethanes for the Fabrication of Elastic Guided Bone Regeneration Membrane
Table 2
1H ratio of the NMR spectra of polyurethane products. Asterisks
stands for the statistically significant difference with
.
| | Polymers | Proton (1H) | Theoretical ratio | Experimental ratio |
| | PCL-HDI (1 : 1) | RNHCOOR′ : ROCH2R′ : RCH2R′ (c : b : a) | 1 : 35 : 10 | 1 : 29 : 9 | | PCL-HDI-PEG (2 : 3 : 1) | 1 : 24 : 17 | 1 : 27 : 18 | | PCL-HDI-PEG (1 : 2 : 1) | 1 : 36 : 35 | 1 : 17 : 16 | | PCL-HDI-PEG (1 : 3 : 2) | 1 : 13 : 22 | 1 : 11 : 18 | | PCL-HDI-EDA (2 : 3 : 1) | 1 : 18 : 5 | 1 : 26 : 9 | | PCL-HDI-EDA (1 : 2 : 1) | 1 : 19 : 5 | 1 : 19 : 5 | | PCL-HDI-EDA (1 : 3 : 2) | 1 : 8 : 3 | 1 : 16 : 5 |
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