Three-Dimensional Printing Fiber Reinforced Hydrogel Composites
Three-Dimensional Printing Fiber Reinforced Hydrogel Composites
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DOI：
10.1021/am503878d
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发表时间：
2014-09-24
影响因子：
9.5
通讯作者：
Spinks, Geoffrey M.
中科院分区：
文献类型：
--
作者：
Bakarich, Shannon E.;Gorkin, Robert, III;Spinks, Geoffrey M.
使用结合数字建模和3D打印的增材制造工艺在单步工艺中制备纤维增强水凝胶。通过用挤出打印机选择性地图案化藻酸盐/丙烯酰胺凝胶前体溶液和环氧基UV固化粘合剂（Emax 904 Gel-SC）的组合来制造复合材料。使用UV照射将两种油墨固化成单一复合材料。在数字模型中对纤维分布的空间控制允许制造一系列具有溶胀行为和机械性能的材料，其物理特性从柔软和潮湿到坚硬和干燥。与“混合物规则”的比较表明，溶胀复合材料坚持标准复合材料理论。一个原型半月板软骨的制备，以说明在生物工程中的潜在应用。
An additive manufacturing process that combines digital modeling and 3D printing was used to prepare fiber reinforced hydrogels in a single-step process. The composite materials were fabricated by selectively pattering a combination of alginate/acrylamide gel precursor solution and an epoxy based UV-curable adhesive (Emax 904 Gel-SC) with an extrusion printer. UV irradiation was used to cure the two inks into a single composite material. Spatial control of fiber distribution within the digital models allowed for the fabrication of a series of materials with a spectrum of swelling behavior and mechanical properties with physical characteristics ranging from soft and wet to hard and dry. A comparison with the "rule of mixtures" was used to show that the swollen composite materials adhere to standard composite theory. A prototype meniscus cartilage was prepared to illustrate the potential application in bioengineering.