Synthesis and Characterization of Movable Crosslinkable Slide-ring Polyrotaxane based on β-Cyclodextrin (β-CD) and Polypropylene glycol (PPG)
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초록
내용
In this study, polyrotaxane was synthesized by threading β-cyclodextrin (β-CD) onto a poly(propylene glycol) (PPG, MW=4000) chain, followed by end capped with N-(triphenylmethyl)-glycine (Trt-Gly-OH) and DMT-MM as a catalyst. The slide-ring movement of threaded β-CD on polyrotaxane enhanced mechanical properties of dental resin. The synthesized polyrotaxane was characterized by 1H NMR, FT-IR, DSC and TGA. Polymerizable double bonds from methacryloyl chloride (MAC) were conjugated with threaded β-CDs on polyrotaxane to enable photopolymerization. Various concentrations of PPG-β-CD-polyrotaxane were mixed with ethoxylated bis-GMA (EBPDMA) and photopolymerized using DLP 3D printer. UTM was also used to measure the mechanical properties including compressive and flexural strengths.