Self-reinforced polymer composites (SRCs) are proposed as a suitable alternative for composite development, based in the combination of a polymeric matrix and a polymeric fibre made of the same polymer. SRCs based in polylactide (PLA) could be fully biodegradable and their valorisation routes could presumably be assimilated to those for neat PLA. In this sense, the aim of this study was to develop new self-reinforced PLA-based composites and ascertain their biodegradability. For this purpose, PLA-based SRCs were obtained through a thermo-compression procedure and their biodegradability corroborated under standard conditions (ISO 20200). Moreover, a deep study of the effect of the different factors involved in the biodegradation of the composites such as the temperature, the water and the compost medium was considered relevant to delimitate the long-term properties and valorisation routes for these materials. The macroscopic and microscopic appearance as well as the thermo-oxidative stability, the thermal properties and the molar mass were evaluated. Although degradation was perceived due to the effect of temperature, the synergistic combination of water and temperature ‒and compost‒ was found to play a key role in the biodegradation of these materials. Overall, these SRCs can be considered as promising candidates, since their end-of-life management options can be guaranteed under standardised composting conditions.

基于聚合物基质和由相同聚合物制成的聚合物纤维的组合，提出了自增强聚合物复合材料（SRC）作为复合材料开发的合适替代方法。基于聚丙交酯（PLA）的SRC可能是完全可生物降解的，并且其增价途径可能与纯PLA相似。从这个意义上讲，本研究的目的是开发新的自增强PLA基复合材料并确定其生物降解性。为此，通过热压程序获得了基于PLA的SRC，并在标准条件下（ISO 20200）证实了其生物降解性。此外，对复合材料生物降解过程中涉及的不同因素（例如温度，水和堆肥介质被认为与划定这些材料的长期特性和增值途径有关。评价了宏观和微观外观以及热氧化稳定性，热性质和摩尔质量。尽管由于温度的影响而导致降解，但水和温度‒和堆肥‒的协同作用被发现在这些材料的生物降解中起着关键作用。总体而言，这些SRC可以被视为有前途的候选者，因为可以在标准化堆肥条件下保证其报废管理选择。评价热性能和摩尔质量。尽管由于温度的影响而导致降解，但水和温度‒和堆肥‒的协同作用被发现在这些材料的生物降解中起着关键作用。总体而言，这些SRC可以被视为有前途的候选者，因为可以在标准化堆肥条件下保证其报废管理选择。评价热性能和摩尔质量。尽管由于温度的影响而导致降解，但水和温度‒和堆肥‒的协同作用被发现在这些材料的生物降解中起着关键作用。总体而言，这些SRC可以被视为有前途的候选者，因为可以在标准化堆肥条件下保证其报废管理选择。