High performance and multi-UV curable materials adaptable photothermal nanoparticles for near-infrared-responsive digital light processing based 4D printing

Shiwei Feng, Jingjing Cui, Yunlong Guo, Weizi Gao, Yongding Sun, Chen Liang, Zhe Lu, Biao Zhang

Research output: Contribution to journalArticlepeer-review

Abstract

Integration of functional nanomaterials into 3D printing polymers expands the versatility of 4D printing. However, high performance and multi-UV curable materials adaptable nanoparticles for 4D printing are still urgently needed to avoid printing complications and deformation limitations caused by high filler loadings. Here, high performance oxygen-deficient tungsten oxide nanoparticles (WO3-x NPs) are synthesized via a straightforward hydrothermal method, and the resulting nanoparticles (NPs) exhibit excellent photothermal property which can rapidly increase from room temperature to 562.6 °C in less than 2 s via near-infrared (NIR) light irradiation. Moreover, these NPs can also be well dispersed in a wide range of photocurable polymers, such as UV curable hydrogel, shape memory polymer, and dual-curing polymer, forming variety of nanocomposite systems. The formed nanocomposite systems can be manufactured into complex 3D structures via digital light processing based 4D printing. Just trace WO3-x NPs in nanocomposite systems (<2 wt‰) can help realize the controllable photothermal properties of the printed structures, which are capable of arbitrary spatial deformation, remote-controlled distortion, and on-demand reinforcement in response to NIR irradiation, presenting a succinct and impactful approach to broadening the application scope of light-controlled DLP-based 4D printing.

Original languageEnglish
Article number110984
JournalComposites Science and Technology
Volume260
DOIs
StatePublished - 8 Feb 2025

Keywords

  • 4D printing
  • Digital light processing
  • Highly performance
  • Photothermal
  • WO NPs

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