Crystallization Mechanism of Polycaprolactone
碩士 === 國立臺灣科技大學 === 高分子系 === 96 === In this study, the effects of molecular weight of Polycaprolactone (PCL) on crystallization and melting behaviors were first investigated using differential scanning calorimetry (DSC) and polarized optical microscopy (POM). Then, the differences in isothermal crys...
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| Format: | Others |
| Language: | zh-TW |
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2008
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| Online Access: | http://ndltd.ncl.edu.tw/handle/34166971876117847143 |
| Summary: | 碩士 === 國立臺灣科技大學 === 高分子系 === 96 === In this study, the effects of molecular weight of Polycaprolactone (PCL) on crystallization and melting behaviors were first investigated using differential scanning calorimetry (DSC) and polarized optical microscopy (POM). Then, the differences in isothermal crystallization kinetics between linear and three-arm PCLs were also discussed in this work. The crystallization exotherms measured using DSC were analyzed using a modified Avrami equation. In contrast to the conventional Lauritzen -Hoffman analysis which was based on the growth rates measured at different crystallization temperatures (Tc) for a MW. Finally, The non-linear behavior in the late stage of crystallization was also discussed as well in this study. The morphology of PCL crystallites exhibits various patterns as the crystallization condition changes under metastable state.
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