Abstract
The BSS/HDPE (BSSP) composites with different BSS contents were prepared by melt-compounding method. The non-isothermal crystallization kinetics of HDPE and BSSP were investigated by DSC at various cooling rates. Jeziorny and Liu methods were employed to describe the non-isothermal crystallization process of HDPE and BSSP. The results showed that, when the relative degree X(t) of crystallinity is approximately 71.6% or more, the Jeziorny method is invalid to describe the non-isothermal crystallization process, while the Liu method is successful in doing so for HDPE and BSSP. The addition of BSS can accelerate the overall non-isothermal crystallization process of HDPE, but does not change the nucleation mechanism and dimension of spherulite growth of HDPE matrix. The crystallization rate for both HDPE and BSSP increases with the increasing cooling rate, but it is quicker for BSSP than HDPE at a given cooling rate. Moreover, the addition of BSS decreases the crystallization activation energy Ea calculated by Kissinger equation.
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