工程天然花粉粒作为多功能 3D 打印材料,Advanced Functional Materials

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工程天然花粉粒作为多功能 3D 打印材料
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2021-08-25 , DOI: 10.1002/adfm.202106276
Shengyang Chen ₁ , Qian Shi ₁ , Taesik Jang ₂ , Mohammed Shahrudin Bin Ibrahim ₃ , Jingyu Deng ₃ , Gaia Ferracci ₃ , Wen See Tan ₁ , Nam‐Joon Cho ₃ , Juha Song ₁

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从可持续自然资源开发多功能 3D 打印材料是增材制造的重中之重。我们使用环保方法将硬花粉粒转化为刺激响应微凝胶颗粒，设计了一种花粉衍生的微凝胶悬浮液，可作为复合水凝胶墨水的功能增强剂和多功能自由形式 3D 打印系统的支撑基质。花粉微凝胶颗粒能够打印复合墨水，并提高了用于 3D 细胞培养应用的海藻酸盐和透明质酸水凝胶支架的机械和生理稳定性。此外，这些颗粒赋予油墨以刺激响应控制释放的特性。通过调整微凝胶的流变特性，证明并优化了花粉微凝胶悬浮液作为海藻酸盐和硅橡胶油墨自由形式 3D 打印的支撑基质的适用性。与其他类别的天然材料相比，花粉粒具有几个引人注目的特征，包括自然丰度、可再生性、可负担性、易加工性、单分散性和可调流变特性，这使它们成为设计用于 3D 打印应用的先进材料的有吸引力的候选者。

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Engineering Natural Pollen Grains as Multifunctional 3D Printing Materials

The development of multifunctional 3D printing materials from sustainable natural resources is a high priority in additive manufacturing. Using an eco-friendly method to transform hard pollen grains into stimulus-responsive microgel particles, we engineered a pollen-derived microgel suspension that can serve as a functional reinforcement for composite hydrogel inks and as a supporting matrix for versatile freeform 3D printing systems. The pollen microgel particles enabled the printing of composite inks and improved the mechanical and physiological stabilities of alginate and hyaluronic acid hydrogel scaffolds for 3D cell culture applications. Moreover, the particles endowed the inks with stimulus-responsive controlled release properties. The suitability of the pollen microgel suspension as a supporting matrix for freeform 3D printing of alginate and silicone rubber inks was demonstrated and optimized by tuning the rheological properties of the microgel. Compared with other classes of natural materials, pollen grains have several compelling features, including natural abundance, renewability, affordability, processing ease, monodispersity, and tunable rheological features, which make them attractive candidates to engineer advanced materials for 3D printing applications.

更新日期：2021-08-25

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