Aligned nanocomposite tapes based on plasticized polylactic acid (PLA) and 1 wt% cellulose nanofibers (CNF) were prepared using uniaxial solid-state drawing, and the effects of drawing conditions including temperature, speed and draw ratio on the material were studied. Microscopy studies confirmed alignment and the formation of ‘shish-kebab’ morphology in the drawn tape. Mechanical properties demonstrate that the solid-state drawing is a very effective way to produce stronger and tougher PLA nanocomposites, and the toughness can be improved 60 times compared to the undrawn tape. Additionally, the thermal properties, i.e. storage modulus, glass transition temperature and degree of crystallinity were improved. These improvements are expected due to the synergistic effect of CNF in the nanocomposite and orientations induced by the solid-state drawing.

采用单轴固态拉伸制备了基于增塑聚乳酸（PLA）和1wt％纤维素纳米纤维（CNF）的取向纳米复合带，研究了拉伸条件（包括温度，速度和拉伸比）对材料的影响。显微镜研究证实，在拉出的胶带中对齐并形成了“烤肉串”形态。机械性能表明，固态拉伸是生产更强韧的PLA纳米复合材料的一种非常有效的方法，与未拉伸的胶带相比，其韧性可以提高60倍。另外，改善了热性能，即储能模量，玻璃化转变温度和结晶度。预期由于纳米复合材料中CNF的协同作用和固态拉伸诱导的取向，这些改进。