Crystallization Behavior of Poly(lactic acid) Nucleated by a Hydrazide Compound

Cheng Lang Li; Qiang Dou

doi:10.4028/www.scientific.net/AMR.710.85

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Crystallization Behavior of Poly(lactic acid) Nucleated by a Hydrazide Compound

Abstract:

A hydrazide compound (N-4) was used as a nucleating agent to induce the crystallization of poly (lactic acid) (PLA). PLA/N-4 samples were prepared by melt blending in an internal mixer. The melting and crystallization behavior and spherulitic morphology of the samples doped with different contents of N-4 were investigated by means of differential scanning calorimetry (DSC) and polarized light microscopy (PLM). It is found that the crystallization temperature and crystallinity increased but the spherulitic size of PLA decreased for the nucleated samples. It is indicated that N-4 is an effective nucleating agent for PLA.