Synthesis and Characterization of Polyrotaxane-based Polyurethane with Improved Mechanical Strength and Elongation
발표자
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초록
내용
Highly stretchable polymer have getting much attention because of their unique properties. 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. Polyrotaxane was used to synthesized by threading beta cyclodextrin (β-CD) along the axis of PPG-diamine polymer backbone followed end capped with 2,4,6-trinitrobenzene sulfonic acid (TNBSA). The synthesized polyurethane and polyrotaxane were characterized by 1HNMR and FTIR spectroscopies. Coverage of polyrotaxane was adjusted by mole ratio of PPG and β-CD. DSC and TGA were used to characterize thermal properties of polyrotaxane and polyurethane.