聚(L-丙交酯)(PLA),一种完全生物基脂族聚酯,在过去的十年中,由于其特殊的属性而引起了极大的关注,如高拉伸模量/强度,生物相容性,(生物)在各种介质中的降解性,通过塑料/纺织工业的常规工艺,易于回收和良好的熔体状态加工性。将PLA与其他聚合物共混代表了开发具有优异性能的下一代PLA基材料的最具成本效益和最有效的方法之一。特别是,已经对PLA与工程聚合物如聚碳酸酯(PC)的共混物进行了深入研究,聚对苯二甲酸乙二醇酯(PET),聚对苯二甲酸丁二醇酯(PBT)和各种聚酰胺(PA)。这个概述,因此,旨在收集最近的作品在过去10年这些不混溶的基于PLA的混合物通过熔融挤出加工,如双螺杆复合。此外,为了更好地科学理解各种终极属性,通过内部混合器处理也已冒险。特别强调混合形态,增容策略和最终(热)机械性能(拉伸/冲击强度,延展性和热变形温度),用于潜在的耐用和高性能应用,如电子零件(3C零件,电子机箱)取代PC/ABS混合物,已经做了。
Poly(L-Lactide) (PLA), a fully biobased aliphatic polyester, has attracted significant attention in the last decade due to its exceptional set of properties, such as high tensile modulus/strength, biocompatibility, (bio)degradability in various media, easy recyclability and good melt-state processability by the conventional processes of the plastic/textile industry. Blending PLA with other polymers represents one of the most cost-effective and efficient approaches to develop a next-generation of PLA-based materials with superior properties. In particular, intensive research has been carried out on PLA-based blends with engineering polymers such as polycarbonate (PC), poly(ethylene terephthalate) (PET), poly(butylene terephthalate) (PBT) and various polyamides (PA). This overview, consequently, aims to gather recent works over the last 10 years on these immiscible PLA-based blends processed by melt extrusion, such as twin screw compounding. Furthermore, for a better scientific understanding of various ultimate properties, processing by internal mixers has also been ventured. A specific emphasis on blend morphologies, compatibilization strategies and final (thermo)mechanical properties (tensile/impact strength, ductility and heat deflection temperature) for potential durable and high-performance applications, such as electronic parts (3C parts, electronic cases) to replace PC/ABS blends, has been made.