Crosslinkable polyrotaxane-based photocurable 3D printable dental resin
발표자
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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. To enable photopolymerization, methacryloyl chloride (MAC) was conjugated with threaded β-CD on polyrotaxane using triethylamine (TEA) as a catalyst. The synthesized polyrotaxane and polyrotaxane-methacrylate were characterized by 1H NMR, 13C NMR, FT-IR, XRD, DSC and TGA. Various concentrations of PPG-β-CD-polyrotaxane-methacrylate were mixed with ethoxylated bis-GMA (EBPDMA) and photopolymerized by 3D printing. UTM was also used to measure the mechanical properties such as compressive and flexural strengths.