UV-Resistant Self-Healing Emulsion Glass as a New Liquid-like Solid Material for 3D Printing

Ssu Wei Hu, Pin Jung Sung, Thao Phuong Nguyen, Yu Jane Sheng, Heng Kwong Tsao

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Directly writing 3D structures into supporting mediums is a relatively new developing technology in additive manufacturing. In this work, durable and recyclable liquid-like solid (LLS) materials are developed as supporting mediums that are stable for both UV and thermal solidification. Our LLS material is comprised of densely packed oil droplets in a continuous aqueous medium, known as emulsion glass. Its elastic nature emerges from the jammed structure of oil droplets, which offers this LLS material rapidly self-healing ability. Moreover, the yield stress of the glass is relatively low and can be tuned by the viscosity and weight percentage of oil. The capability of the emulsion glass as supporting mediums is successfully demonstrated by directly writing and then curing designed structures. The emulsion glass has been repeatedly used at least 6 times upon exposure to UV irradiation and heat, implying it can expand the applications of supporting medium to the writing process involving UV- A nd thermal-curable inks simultaneously.

Original languageEnglish
Pages (from-to)24450-24457
Number of pages8
JournalACS Applied Materials and Interfaces
Volume12
Issue number21
DOIs
StatePublished - 27 May 2020

Keywords

  • embedded 3D printing
  • emulsion glass
  • liquid-like solid materials
  • rheological properties
  • supporting medium
  • UV-resistant

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