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<p>A novel approach for imparting thermos-responsivity to 3D monolith is introduced based on incorporation of a moiety with temperature-dependent solubility in target media in printing ink and fabrication of a collapsible monolith. More precisely, 2-acrylamido-2-methylpropane sulfonic acid (AMPS) is utilized in ABS-like commercial resin to fabricate a monolith, which was stable in aqueous media at low temperature and collapsible at high temperatures. The effects of influential factors, such as loading of AMPS, 3D-pattern, post-treatment of printed monolith, and immiscibility with printing resin were studied and it was underlined that only a small content of AMPS could induce the collapsible feature and prolonging post-curing of the monolith can be leveraged for controlling its collapsing behavior. To exemplify the utility of the developed monolith, Methylene blue dye was incorporated in the 3D-printed monolith and its temperature-dependence release, which triggered color change was confirmed for potential use as temperature-indicator. Furthermore, it was approved that 2-phenylimidazole that is a potential anti-corrosive agent could be embedded in the monolith for devising thermos-responsive releasing agents. This protocol obviates the necessity of use of thermos-responsive polymers and hydrogels, and decreases the fabrication cost, paving the way for designing 3D-printed sacrificing agents for various applications.</p>

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Design and fabrication of collapsible 3D-printed monoliths and their potential applications as temperature indicator and thermos-responsive releasing carrier

  • 期刊论文

  • 发表日期：

    2025年2月20日

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  • Fatemeh Ranjbar,
  • Amir Masood Rezadoust,
  • Samahe Sadjadi

摘要

A novel approach for imparting thermos-responsivity to 3D monolith is introduced based on incorporation of a moiety with temperature-dependent solubility in target media in printing ink and fabrication of a collapsible monolith. More precisely, 2-acrylamido-2-methylpropane sulfonic acid (AMPS) is utilized in ABS-like commercial resin to fabricate a monolith, which was stable in aqueous media at low temperature and collapsible at high temperatures. The effects of influential factors, such as loading of AMPS, 3D-pattern, post-treatment of printed monolith, and immiscibility with printing resin were studied and it was underlined that only a small content of AMPS could induce the collapsible feature and prolonging post-curing of the monolith can be leveraged for controlling its collapsing behavior. To exemplify the utility of the developed monolith, Methylene blue dye was incorporated in the 3D-printed monolith and its temperature-dependence release, which triggered color change was confirmed for potential use as temperature-indicator. Furthermore, it was approved that 2-phenylimidazole that is a potential anti-corrosive agent could be embedded in the monolith for devising thermos-responsive releasing agents. This protocol obviates the necessity of use of thermos-responsive polymers and hydrogels, and decreases the fabrication cost, paving the way for designing 3D-printed sacrificing agents for various applications.