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Preparation of PEG materials for constructing complex structures by stereolithographic 3D printing

机译：通过立体光刻3D打印制备用于构建复杂结构的PEG材料

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The 3D printing of biocompatible materials is very promising due to their potential for use in biological applications, such as the development of artificial organs. Among various 3D printing methods, stereolithography is a good candidate due to its ability to produce high-resolution structures. Although the 3D printing of hydrogels has been investigated, few studies on printing complex structures have been conducted. In this study, we investigate various challenges during the construction of complex structures such as tilted ratchets and ladders which has T-shapes using UV-curable PEG materials as well as the mechanisms to address these problems. We study the effect of UV absorbing pigments to control the UV penetration depth and the relation with the slice thickness. Also, we design ladder-type structures with different neck widths to verify the mechanical strength of the prepared hydrogel polymers.
机译：生物相容性材料的3D打印非常有前景，因为它们具有用于生物应用（例如人造器官）的潜力。在各种3D打印方法中，立体光刻技术因其能够产生高分辨率结构而非常适合。尽管已经对水凝胶的3D打印进行了研究，但对打印复杂结构的研究很少。在这项研究中，我们调查了在使用紫外线可固化PEG材料构建具有T形的倾斜结构的棘轮和梯子等复杂结构的过程中面临的各种挑战，以及解决这些问题的机理。我们研究了吸收紫外线的颜料对控制紫外线穿透深度及其与切片厚度的关系的影响。此外，我们设计了具有不同颈宽的梯型结构，以验证所制备的水凝胶聚合物的机械强度。

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