Investigation of the physical properties of shape memory polyurethanebased on PEG with different molecular weights

In this research, shape memory polyurethane was synthesized from polyethylene glycol with ۴۰۰ and۴۰۰۰ g/mol molecular weights. The amount of hydrogen bonding and chemical structure of thesubstance were investigated using Fourier transform infrared spectroscopy analysis. The physical andthermal properties of the samples were examined by differential scanning calorimetry analysis. Andthe results indicate changes in transition temperature and crystallinity with the variation in themolecular weight of PEG. The results showed that the sample with PU-PEG۴۰۰۰ has more favorablethermal properties compared to the PU-PEG۴۰۰ sample

کلیدواژه ها:

Synthesis ، Polyurethane ، Physical properties ، Polyethylene glycol