用差示扫描量热仪(DSC)研究了聚乙二醇(PEG)的等温结晶动力学.结果表明,在较高温度下处理PEG后,等温结晶过程中,Avrami指数,n≈4,表明PEG以均相成核的三维球晶方式生长,同时计算得到结晶活化能为72.013 kJ/mol;而在较低温度处理PEG后,等温结晶过程中,Avrami指数,n≈3,表明PEG以异相成核的三维球晶方式生长,结晶活化能为234.791kJ/mol,比较高温处理后的结晶活化能高,说明PEG的结晶能力随热处理温度的降低而降低.
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