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Herein, Ag-modified carbon nanotube (CNT-Ag)/ poly(L-lactic acid) (PLLA)/thermoplastic polyurethane (TPU) scaffold was fabricated by selective laser sintering (SLS) for bone defect repair, and Ag was in-situ grown on CNT for promoting dispersion and conductivity for effective electrothermal conversion. The dispersion state of CNT was improved by the introduction of Ag onto CNT, and the scaffold containing 1.5 wt% CNT-Ag exhibited a higher electrical conductivity of 244.6 ds/m than that of 26.7 ds/m for the scaffold containing 1.5 wt% CNT, and consequently exhibited an enhanced electro-responsive shape memory Rr of 96.1%. In addition, the composite scaffold possessed good biocompatibility, which was expected to be applied in bone defect repair.

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4D Printed CNT-Ag/PLLA/TPU Bone Scaffold Having Enhanced Electro-Responsive Shape Memory Properties

  • 会议论文

  • 发表日期：

    2026年

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  • Feng Yang,
  • Jiye Jia,
  • Pei Feng

摘要

Herein, Ag-modified carbon nanotube (CNT-Ag)/ poly(L-lactic acid) (PLLA)/thermoplastic polyurethane (TPU) scaffold was fabricated by selective laser sintering (SLS) for bone defect repair, and Ag was in-situ grown on CNT for promoting dispersion and conductivity for effective electrothermal conversion. The dispersion state of CNT was improved by the introduction of Ag onto CNT, and the scaffold containing 1.5 wt% CNT-Ag exhibited a higher electrical conductivity of 244.6 ds/m than that of 26.7 ds/m for the scaffold containing 1.5 wt% CNT, and consequently exhibited an enhanced electro-responsive shape memory Rr of 96.1%. In addition, the composite scaffold possessed good biocompatibility, which was expected to be applied in bone defect repair.