Polylactic acid (PLA) is the most wide-scale investigated biodegradable and renewable under specific processing conditions thermoplastic polyester. As bioplastic material, it has the potential to be used as a substituent of conventional polymers derived from fossil fuel resources. The drawbacks possessed by PLA as poor thermal and electrical properties, mechanical brittleness, and ability to undergo polymer chain degradation in ambient medium could be overcome by incorporation of carbon nanofillers in the PLA matrix. Raman spectroscopy was used to study the effect of graphene nanoplatelets (GNPs) and multiwall carbon nanotubes (MWCNTs) on the nanocomposite molecular morphology and structure. The carbon nanofillers impact on the crystallinity of the melt blended hybrid material and the changes in the composite architecture were defined by applying of physical methods as X-ray diffraction (XRD) and differential scanning calorimetry (DSC). Thermo-gravimetric analysis (TGA) was implemented to outline the thermal properties of the nanocomposites. An excellent homogeneity and firmly expressed crystalline structure of the produced composite materials were disclosed. Tensile testing showed that coupling GNPs and MWCNTs has higher positive effect on ultimate tensile strength of the nanocomposites and lower influence on Young’s modulus of elasticity.

聚乳酸（PLA）是在特定加工条件下可热塑性和可再生的最广泛研究的热塑性聚酯。作为生物塑料材料，它有潜力用作衍生自化石燃料资源的常规聚合物的取代基。通过在PLA基质中掺入碳纳米填料，可以克服PLA所具有的缺点，如热和电性能差，机械脆性以及在环境介质中发生聚合物链降解的能力。拉曼光谱用于研究石墨烯纳米片（GNPs）和多壁碳纳米管（MWCNTs）对纳米复合物分子形态和结构的影响。碳纳米填料对熔融共混混合材料的结晶度有影响，并且通过应用物理方法（如X射线衍射（XRD）和差示扫描量热法（DSC））定义了复合材料结构的变化。实施热重分析（TGA）以概述纳米复合材料的热性能。公开了所生产的复合材料的优异的均质性和牢固表达的晶体结构。拉伸试验表明，偶联的GNP和MWCNT对纳米复合材料的极限拉伸强度具有较高的正效应，而对杨氏弹性模量的影响较小。公开了所生产的复合材料的优异的均质性和牢固表达的晶体结构。拉伸测试表明，偶联的GNP和MWCNT对纳米复合材料的极限拉伸强度具有较高的正效应，而对杨氏弹性模量的影响较小。公开了所生产的复合材料的优异的均质性和牢固表达的晶体结构。拉伸试验表明，偶联的GNP和MWCNT对纳米复合材料的极限拉伸强度具有较高的正效应，而对杨氏弹性模量的影响较小。