PA1212-b-PEG嵌段共聚物的合成和非等温结晶动力学研究

Research of PA1212-b-PEG Block Copolymer Synthesis and Non-uniform Temperature Crystallization Dynamics

采用DSC方法研究了PA1212-b-PEG在不同降温速率下的结晶过程,并利用Avrami方程研究了其非等温结晶动力学。在非等温结晶过程中,随着降温速率的增大,结晶温度向低温偏移。综合利用Avrami方程得到Avrami指数为4,说明结晶是以异相成核,三维生长。

Using the DSC method to study PA1212 -b -PEG under the different temper^tture decrease speed crystal- lization process, its non -uniform temperature crystallization dynamics was studied with the Avrami equation. In non- i- sothermal crystallization process, as the cooling rate increase, the crystallization temperature was decreased. The compre- hensive utilization Avrami equation obtained the Avrami index was 4, and showed that crystalline was heterogeneous nucle- ation and growth of three- dimensional.