The objective of this work was to investigate the effect of Mackerel-derived hydroxyapatite (MHAp) and native montmorillonite (MMT) on the mechanical-physico properties of the polylactic acid (PLA) blends. Various amounts of MHAp (2 to 10 phr) and MMT (0 to 4 phr) were added into PLA matrix by using melt-blending method. The results of tensile test and X-ray diffraction analyses indicated that the reinforcing and nucleating effect of MHAp on PLA matrix has effectively improved the tensile strength and crystallinity of pristine PLA. The addition of MMT particles has significantly increased the mechanical strength but decreased the crystallinity of relevant PLA/MHAp composites, indicates the effective melt intercalation of PLA matrix into MMT interlayer space. The d-spacing of MMT deflection peak could be increased by further increasing of MMT loading from 2 to 4 phr in PLA/MHAp/MMT blends. This indicates the occurrence of PLA hydrolysis during melt compounding at higher MMT loading level, being supported by the FTIR analysis and the deterioration in morphological properties of PLA ternary composites. However, the hydrolytic degradation-induced increment of PLA functional groups for reaction with excessive amount MHAp could counterbalance the adverse effect of interfacial tension between PLA and MHAp (8-10phr) on mechanical properties.

这项工作的目的是调查鲭鱼来源的羟基磷灰石（MHAp）和天然蒙脱土（MMT）对聚乳酸（PLA）共混物的机械物理性能的影响。通过熔融共混法将各种量的MHAp（2至10 phr）和MMT（0至4 phr）添加到PLA基质中。拉伸试验和X射线衍射分析的结果表明，MHAp对PLA基质的增强和成核作用有效地提高了原始PLA的拉伸强度和结晶度。MMT颗粒的添加显着提高了机械强度，但降低了相关PLA / MHAp复合材料的结晶度，表明PLA基质有效地插入MMT层间空间。该d在PLA / MHAp / MMT共混物中，MMT载荷峰值从2 phr进一步增加到4 phr，可以提高MMT偏转峰的间距。这表明FTIR分析和PLA三元复合材料的形态学性能下降支持了在较高MMT加载量下熔融共混过程中发生PLA水解。然而，水解降解诱导的PLA官能团与过量的MHAp反应会增加，这可以抵消PLA和MHAp（8-10phr）之间的界面张力对机械性能的不利影响。