In this study, biodegradable Polylactic acid (PLA) composites reinforced with phosphate glass fibres (PGF) using different fibre architecture (UUU, CCC, UCU and CUC) were prepared via compression moulding process. The maximum initial flexural strength and modulus were observed for unidirectional (UD) fibre reinforced composites (UUU), whereas CCC composites with thoroughly chopped fibre reinforcement exhibited the lowest values. The sandwich structure of UCU composite with 50% UD reinforcement in the skin and 50% chopped fibre in core exhibited similar flexural properties in comparison to UUU composites, meeting the flexural property requirements of cortical bone. Furthermore, the degradation behaviour and mechanical performance of composites with different fibre architecture were analysed during the degradation process for 28 days. The UUU composites showed the most rapid degradation of the flexural performance. Meanwhile, a lower reduction of flexural properties was observed for UCU composites due to less susceptibility to wicking in discontinuous fibres. As such, the UCU composite could provide near flexural performance with better retention of properties during the degradation.

在这项研究中，通过压缩成型工艺制备了使用不同纤维结构（UUU，CCC，UCU和CUC）的磷酸盐玻璃纤维（PGF）增强的可生物降解的聚乳酸（PLA）复合材料。单向（UD）纤维增强复合材料（UUU）观察到最大的初始抗弯强度和模量，而具有充分切碎的纤维增强材料的CCC复合材料则表现出最低的值。与UUU复合材料相比，UCU复合材料的三明治结构在皮肤中具有50％UD增强，在芯中具有50％的短切纤维表现出相似的抗弯性能，满足了皮质骨的抗弯性能要求。此外，在28天的降解过程中，分析了具有不同纤维结构的复合材料的降解行为和机械性能。UUU复合材料表现出弯曲性能的最快降解。同时，由于不连续纤维对芯吸的敏感性较小，UCU复合材料的弯曲性能降低得更低。这样，UCU复合材料可以提供接近抗弯的性能，并在降解过程中具有更好的性能保留率。