| Melting Behavior of PET After Solid State Polycondensation |
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| 作者姓名： | 邱高 唐志廉 黄南薰 |
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| 作者单位： | Qiu GaoDepartment of Basic Samoa，China Textile University，Shanghai，200051Tang Zhilian，Huang NanxunDepartment of Textile Chemical Engineering，China Textile University，Shanghai，200051 |
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| 摘 要： | Dual endotherms during differenUal scanning calorimetric (DSC) measurement occur when dried PET pellets are pretreated with solld state polyeondensation (SSP) at 215-230℃ for appropriate holding, times. The two endothermic fusion peaks arise from melting and recrystallization, taking place during scanning in the calorimeter,of imperfect crystals initial present in sample. The lower temperature peak appears higher than the SSP reaction temperature for 5-20℃ accordingly and linear relaflonship with SSP reaction temperature, logarithmic linear relationship vs. SSP reaction time, while the position of higher temperature peak nearly does not change. The higher the SSP reaction temperature, the larger the total area of the endotherms, namely, the higher crystallinity. For 4 reaction temperatures the crystallinity show logarithmic linear relationship vs, SSP reaction time.
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Melting Behavior of PET After Solid State Polycondensation |
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| Qiu Gao.Melting Behavior of PET After Solid State Polycondensation[J].Journal of Donghua University,1998(3). |
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| Authors: | Qiu Gao |
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| Affiliation: | Qiu GaoDepartment of Basic Samoa,China Textile University,Shanghai,200051Tang Zhilian,Huang NanxunDepartment of Textile Chemical Engineering,China Textile University,Shanghai,200051 |
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| Abstract: | |
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| Keywords: | PET SSP crystallinity dual endotherms |
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