[국내논문]PLA/PCL 블렌드의 특성 및 상용성에 관한 연구 -에스테르 교환반응 및 열적특성- A Study on the Characteristics and Miscibility of PLA/PCL Blends -Ester Interchange Reaction and Thermal Property-
The aliphatic poly(lactic acid)/poly($\varepsilon$-caprolactone)(PLA/PCL) blends for bioabsorbable filament sutures were prepared by melt blending. The ester interchange reaction by alcoholysis between two polymers was studied. Also, their thermal properties and miscibility changes due to...
The aliphatic poly(lactic acid)/poly($\varepsilon$-caprolactone)(PLA/PCL) blends for bioabsorbable filament sutures were prepared by melt blending. The ester interchange reaction by alcoholysis between two polymers was studied. Also, their thermal properties and miscibility changes due to the alcoholysis were investigated by FT-IR, $^1H-NMR$ and DSC analyses. It was found that PLA/PCL random copolymers have been formed during the melt blending through the ester interchange reaction by alcoholysis. The optimum blending conditions for this reaction were determined. The thermal properties of PLA/PCL blends such as melting temperature and heat of fusion were decreased with increasing interchange levels. However, the miscibility between two polymers was improved greatly by the ester interchange reaction.
The aliphatic poly(lactic acid)/poly($\varepsilon$-caprolactone)(PLA/PCL) blends for bioabsorbable filament sutures were prepared by melt blending. The ester interchange reaction by alcoholysis between two polymers was studied. Also, their thermal properties and miscibility changes due to the alcoholysis were investigated by FT-IR, $^1H-NMR$ and DSC analyses. It was found that PLA/PCL random copolymers have been formed during the melt blending through the ester interchange reaction by alcoholysis. The optimum blending conditions for this reaction were determined. The thermal properties of PLA/PCL blends such as melting temperature and heat of fusion were decreased with increasing interchange levels. However, the miscibility between two polymers was improved greatly by the ester interchange reaction.
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