# Synthesis of Shape-Memory Polyurethanes: Combined Experimental and Simulation Studies
## 2 Materials and Methods
### Syntheses
#### 2.2.2 Oligo(decamethylene carbonate)  
Diolog(decamethylene carbonate) Diol with an Average Molar Mass of 3000 g \(\times\) mol\({}^{-1}\) (E_OCD_3000)  
The 56.5 g of 1,10-decanediol (0.32 mol), 150.0 g of E_BMC_8 (0.52 mol) and K\({}_{2}\)CO\({}_{3}\) (0.005 mol.%) were placed in a 500 cm\({}^{3}\) three-necked flask equipped with a magnetic stirrer, thermometer, and distillation condenser. Then, approximately 60 cm\({}^{3}\) of 1,4-dioxane was added. The temperature of the mixture was gradually increased from 100 \({}^{\circ}\)C to 160 \({}^{\circ}\)C. The progress of the reaction was monitored by measuring the refractive index of the distillate and carried out until no methanol was observed in the distillate (around 14 h). Afterwards, the reaction was continued under reduced pressure at 160 \({}^{\circ}\)C (for an additional 4 h), while the 1,10-decanediol and residual 1,4-dioxane were removed. The obtained product was dissolved in dichloromethane and washed six times with demineralized water to remove the catalyst. Afterwards, the solvent and residuals of water were removed under reduced pressure. The synthesized product was characterized by \({}^{1}\)H NMR and FT-IR spectroscopy. Based on \({}^{1}\)H NMR, the number average molar mass was calculated to be equal 3000 g \(\times\) mol\({}^{-1}\).  
E_OCD_3000: \({}^{1}\)H NMR: (CDCl\({}_{3}\), 400 MHz): \(\delta\) (ppm)= 4.10 (t, 4H, C(O)OCH\({}_{2}\)), 3.62 (t, 4H, CH\({}_{2}\)OH), 1.65 (m, 4H, HOCH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)), 1.55 (m, 4H, HOCH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\) CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)), 1.53 (m, 4H, OCH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)), 1.32 (m, 4H, OCH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)), 1.32 (m, 4H, OCH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)); Figure S7, Supplementary Materials.  
FT-IR (ATR): 3450, 2920, 2850, 1740, 1470, 1400, 1340, 1280, 1250, 1030, 940, 790 cm\({}^{-1}\); Figure S8, Supplementary Materials.  
Oligo(decamethylene carbonate) Diol with a Number Average Molar Mass of 5000 g \(\times\) mol\({}^{-1}\) (E_OCD_5000) after the Described Synthesis Step  
Synthesis of E_OCD_5000 was similar to E_OCD_3000. In this synthesis, 23.0 g (0.13 mol) of 1,10-decanediol and 50.0 g of E_BMC_8 (0.17 mol) were used, and the time required for the whole synthesis was 20 h. Number average molar mass was calculated based on \({}^{1}\)H NMR (M\({}_{n}\) = 5000 g \(\times\) mol\({}^{-1}\)).  
E_OCD_5000: \({}^{1}\)H NMR: (CDCl\({}_{3}\),400 MHz): \(\delta\) (ppm)= 4.10 (t, 4H, C(O)OCH\({}_{2}\)), 3.63 (t, 4H, CH\({}_{2}\)OH), 1.65 (m, 4H, HOCH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)), 1.56 (m, 4H, HOCH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\) CH\({}_{2}\)), 1.54 (m, 4H, OCH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)), 1.34 (m, 4H, OCH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)), 1.32 (m, 4H, OCH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)CH\({}_{2}\)); Figure S9, Supplementary Information.  
FT-IR (ATR): 3450, 2920, 2850, 1740, 1470, 1400, 1340, 1280, 1250, 1030, 940, 790 cm\({}^{-1}\); Figure S10, Supplementary Materials.