| 초록 |
Highly stretchable polymer have getting much attention because of their unique properties such as high flexibility, mobility and elasticity. In this study, a highly stretchable polymer was synthesized by crosslinking polyurethane with pre-synthesized polyrotaxane from polypropylene glycol (PPG) with low covered cyclodextrin (CD) which acts as both chain extender and crosslinker. One pot method was used to synthesize polyrotaxane by threading methyl beta cyclodextrin (Me-β-CD) along the axis of PPG-tetra amine polymer backbone followed by end capping with 2,4,6-trinitrobenzene sulfonic acid (TNBSA). The synthesized polyurethane and polyrotaxane were characterized by 1H-NMR and FT-IR spectroscopies. GPC, DSC and TGA were used to characterize the molecular weight and thermal properties of polyrotaxane and polyurethane. |
