Innovative Synthesis of Durable Polylactic Acid-Thermoplastic Polyurethane Elastomer Composites for Three-Dimensional Printing Applications

作者：Zhang, Xiaojie; Xiao, Jianhua; Kim, Jin Kuk; Oh, Jeong Seok^*; Lee, Jinho^*

来源：POLYMER-KOREA, 2023, 47(6): 711-719.

DOI：10.7317/pk.2023.47.6.711

• cardanol
• polylactic acid
• fused deposition modeling
• 3D printing
• dynamic reaction.

The functionalization of polylactic acid (PLA) is examined by grafting cardanol onto its main backbone chain through a dynamic reaction to improve compatibility between PLA and thermoplastic polyurethane (TPU). Cardanol-grafted PLA (PLAC)/TPU blend-based filaments for fused deposition modeling are tested using melt extrusion. Effects of PLAC grafting ratio on the rheological properties and thermal transformation of the PLAC/ TPU blends and the mechanical properties of three-dimensional-printed parts are investigated. A decrease in the glass transition temperature and crystallinity from differential scanning calorimetry are observed with increasing cardanol concentration, implying improved miscibility between PLAC and TPU and as a result, PLAC/TPU blends exhibit improved toughness.

• 单位
  南昌航空大学