期刊
POLYMER COMPOSITES
卷 35, 期 8, 页码 1570-1582出版社
WILEY-BLACKWELL
DOI: 10.1002/pc.22810
关键词
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资金
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
In this article, poly(lactic acid) (PLA) composites containing titanate coupling agent treated calcium carbonate (T-CaCO3) and tributyl citrate (TBC) were prepared via melt blending. The crystallization, morphology, mechanical properties, and nonisothermal cold crystallization kinetics of PLA composites were studied by means of differential scanning calorimetry (DSC), wide angle X-ray diffraction (WAXD), polarized light microscopy (PLM), scanning electron microscopy (SEM), and mechanical tests, respectively. The results show that TBC promotes crystallization of PLA. Both T-CaCO3 and TBC significantly decrease the spherulitic size, but the crystal structure of PLA is not changed. A synergistic toughening effect is obtained by the combination of T-CaCO3 and TBC. The nonisothermal cold crystallization kinetics of PLA composites is well described by Mo's method. The activation energies (Delta E) of nonisothermal cold crystallization were calculated by Kissinger and Takhor methods, respectively. It is found that the addition of T-CaCO3 and TBC increases Delta E, but it also increases the cold crystallization rate. VC 2013 Society of Plastics Engineers
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