Abstract In the present work, maleic anhydride (MA) and biphenyl peroxide (BPO) were used in the preparation of kaolin (K)/poly(e-caprolactone) (PCL)/poly(lactic acid) (PLA) composites with melt compounding method. Composition and structure of the composites were characterized by Fourier transformed infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and field emission-scanning electron microscopy (FE-SEM). Mechanical properties and thermal behaviors of the composites were further investigated. Kaolin selectively located in poly(e-caprolactone) domains and at the phase boundaries, which improved the mechanical properties of the composites due to their rigid structure and high modulus. Influences of maleic anhydride on dispersion state of kaolin and two-phase structure of the composites were explored and discussed. Maleic anhydride enhanced the interactions among kaolin, poly(lactic acid) and poly(e-caprolactone). Meanwhile, it improved the dispersion state of kaolin in the composites. In the presence of both kaolin and maleic anhydride, tensile strength at room temperature and storage modulus at 40 °C were enhanced to 41.2 MPa and 3.9 GPa, respectively.

中文翻译：

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高岭土的选择性定位和马来酸酐在高岭土/聚（ε-己内酯）/聚（乳酸）复合材料中的作用

摘要 在目前的工作中，马来酸酐 (MA) 和过氧化联苯 (BPO) 被用于制备高岭土 (K)/聚 (e-己内酯) (PCL)/聚乳酸 (PLA) 复合材料熔融复合方法。通过傅里叶变换红外光谱（FT-IR）、X射线衍射（XRD）和场发射扫描电子显微镜（FE-SEM）对复合材料的组成和结构进行了表征。进一步研究了复合材料的力学性能和热行为。高岭土选择性地位于聚（ε-己内酯）域和相边界处，由于其刚性结构和高模量，这改善了复合材料的机械性能。探讨和讨论了马来酸酐对高岭土分散状态和复合材料两相结构的影响。马来酸酐增强了高岭土、聚（乳酸）和聚（ε-己内酯）之间的相互作用。同时，它改善了高岭土在复合材料中的分散状态。在高岭土和马来酸酐的存在下，室温拉伸强度和 40°C 储能模量分别提高到 41.2 MPa 和 3.9 GPa。