| Summary: | 碩士 === 國立臺灣科技大學 === 材料科學與工程系 === 106 === This research is about how the structure of polyester effect on thermal properties and crystallization rate, and different ratio of amorphous polymer PETG and carbon nanotubes effect on thermal properties and crystallization rate.
We crystallize our sample under isothermal and non-isothermal procedure using DSC, and find out that PET and straight-chain of PEN are vinyl group and have high melting temperature and high degree of superercooling. After blending with CNT, the melting temperature and crystallization rate of polyester will increase, and after blending with different ratio of PETG, the melting temperature and crystallization rate of polyester will decrease. We can know from Avrami equation that nucleation index n has no big change; the crystallization rate k will increase because of the adding CNT, and will decrease because of the adding PETG.
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