Smart Structures—Additive Manufacturing of Stimuli-Responsive Hydrogels for Adaptive Packings,Industrial & Engineering Chemistry Research

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Smart Structures—Additive Manufacturing of Stimuli-Responsive Hydrogels for Adaptive Packings
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-10-16 , DOI: 10.1021/acs.iecr.0c03137
Xihua Hu ₁ , Claas Spille ₂ , Michael Schlüter ₂ , Irina Smirnova ₁

Affiliation

Smart materials possess a high potential for application in process engineering. Among these smart materials, stimuli-responsive hydrogels exhibit the chemically inherent characteristic to significantly change their macroscopic properties through shifts in environmental conditions. This enables response-triggered actuation caused by a reaction or process deviation. Thereby, smart process concepts are facilitated, which are capable of self-contained process control without external input. Through additive manufacturing of responsive hydrogels, intricate geometries can be generated, with which the response-triggered actuation can perform sophisticated control tasks. Periodic open-cell structures are such geometries, which improve the mass transport in multiphase flows through the distribution of the disperse phase. Responsive hydrogels fabricated as periodic open-cell structures enable the actuation of multiphase flows through an environmental switch allowing for adjustment of flow conditions. Herein, we demonstrate the application of switchable smart structures that facilitate the adaptation of fluid-dynamic properties and mass transfer in cocurrent gas–liquid flows depending on environmental conditions. Smart structures, which are additively manufactured from acrylate photoresist formulations, are applied for in situ and in operandi adjustment of phase distribution through expansion and collapse of these structures in flow channels. Further, diverse photoresist formulations with different associated response triggers are shown, which demonstrate the versatility for application as an in situ and in operandi switch for mass transfer in process units operating with multiphase flows.

中文翻译：

智能结构—用于自适应包装的刺激性水凝胶的增材制造

智能材料在过程工程中具有很高的应用潜力。在这些智能材料中，刺激响应水凝胶具有化学固有的特性，可通过改变环境条件来显着改变其宏观性能。这使得由反应或过程偏差引起的响应触发的致动成为可能。由此，促进了智能过程概念，其能够在没有外部输入的情况下进行独立的过程控制。通过响应式水凝胶的附加制造，可以生成复杂的几何形状，通过这些几何形状，响应触发的驱动器可以执行复杂的控制任务。周期性的开孔结构是这样的几何形状，其通过分散相的分布改善了多相流中的质量传输。制成周期性开孔结构的响应式水凝胶可驱动通过环境开关的多相流，从而调节流动条件。在这里，我们演示了可切换智能结构的应用，这些结构可根据环境条件促进并流气液流动中流体动力学特性和传质的适应。由丙烯酸光致抗蚀剂配方增材制造的智能结构可用于我们展示了可切换智能结构的应用，这些结构可根据环境条件促进顺流气液流动中的流体动力学特性和传质适应。由丙烯酸光致抗蚀剂配方增材制造的智能结构可用于我们展示了可切换智能结构的应用，这些结构可根据环境条件促进顺流气液流动中的流体动力学特性和传质适应。由丙烯酸光致抗蚀剂配方增材制造的智能结构可用于通过这些结构在流动通道中的膨胀和塌陷，在原位和操作中调整相分布。此外，示出了具有不同相关联的响应触发因素的多种光致抗蚀剂制剂，其证明了在用于多相流操作的工艺单元中作为原位和在操作开关中进行传质的通用性。

更新日期：2020-10-29

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