Non-isothermal crystallization kinetics and thermal behaviour of PA12/SEBS-g-MA blends

Bulletin of Materials Science

关键词: Crystallization kinetics;    Avrami;    PA12;    DSC;    activation energy.;   

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The thermal behaviour and crystallization kinetics of PA12/SEBS-g-MA blends were investigated under non-isothermal and isothermal conditions using thermogravimetric analysis and differential scanning calorimetry, respectively. The macrokinetic model given by Avrami was used to analyse both the nonisothermal and isothermal crystallization kinetics of the blends. The value of the Avrami exponent during non-isothermal crystallization predicted that pure PA12 and PA12/SEBS-g-MA blends show spherulitic growth with random nucleation of crystal structures as the n-values lie between 3 and 4. The slight nucleating effect of SEBS-g-MA was showed by nucleating activity calculated by the Dobreva and Gutzowa method.

【 授权许可】

CC BY