The melting and recrystallization behavior of poly(ethylene terephthalate)/SiO2 nanocomposites studied by Step-scan DSC
The melting and recrystallization behavior of Poly (ethylene terephthalate) (PET)/SiO2 nanocomposites after isothermal crystallization from the melt was studied by Step-scan differential scanning calorimetry (SDSC). The influence of SiO2 contents, crystallization temperature and crystallization time on the melting process were examined. Two melting endotherms(in the SDSC CP.A curves, reversible part) and one recrystallization exotherm (in the SDSC CP.IsoK curves, irreversible part)of PET/SiO2 nanocomposites after isothermal crystallization were observed during the melt process. This ascribes to the meltingrecrystallization mechanism .The low temperature endotherm attributes to the melting of primary crystal formed during the isothermal treating and the high temperature endotherm resulting from the melting of recrystallization materials. The reason why more recrystallization happened with the increase of SiO2 content was given and the process of recrystallization was described in detail. The effects of crystal perfection and recrystallization were minimized by increasing of crystallization temperature and time.
nanocomposites recrystallization melting behavior
Chen Liu Kang Zheng Xia Yin Yao Xian Zhang Xiang Lan Liu Ruo Xi Wang Xing You Tian
Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Ningbo Institute of Material Technology & Engineering, Chinese Academy of Sciences Ningbo 315040, Ch
国际会议
2009 Advanced Polymer Processing(Qingdao)Intl Forum(2009高分子材料先进制造业(青岛)国际论坛
青岛
英文
69-73
2009-08-19（万方平台首次上网日期，不代表论文的发表时间）