Solidification of 3D Printed Nanofibril Hydrogels into Functional 3D Cellulose Structures
Solidification of 3D Printed Nanofibril Hydrogels into Functional 3D Cellulose Structures
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DOI：
10.1002/admt.201600096
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发表时间：
2016-10-01
影响因子：
6.8
通讯作者：
Gatenholm, Paul
中科院分区：
文献类型：
--
作者：
Hakansson, Karl M. O.;Henriksson, Ida C.;Gatenholm, Paul
从树木中分离出来的纤维素纳米原纤维有潜力被用作包装、纺织品、生物医学设备和家具等领域未来可持续产品的原材料。然而，一个尚未解决的问题是将纳米原纤维水凝胶转化为干燥的3D结构。在这项研究中，3D打印被用于将纤维素纳米纤维水凝胶转化为具有可控结构的3D结构。这种结构在干燥时坍塌，但通过使用不同的干燥工艺可以控制坍塌，并在凝固时保留三维结构。此外，还通过添加碳纳米管制备了导电纤维素纳米纤维油墨。这些发现使木材衍生材料在3D打印中用于制造可持续商品，如包装、纺织品、生物医学设备和带有导电部件的家具。此外，随着生物聚合物被引入3D打印，3D打印技术本身终于可以被认为是可持续的。
Cellulose nanofibrils isolated from trees have the potential to be used as raw material for future sustainable products within the areas of packaging, textiles, biomedical devices, and furniture. However, one unsolved problem has been to convert the nanofibril-hydrogel into a dry 3D structure. In this study, 3D printing is used to convert a cellulose nanofibril hydrogel into 3D structures with controlled architectures. Such structures collapse upon drying, but by using different drying processes the collapse can be controlled and the 3D structure can be preserved upon solidification. In addition, a conductive cellulose nanofibril ink is fabricated by adding carbon nanotubes. These findings enable the use of wood derived materials in 3D printing for fabrication of sustainable commodities such as packaging, textiles, biomedical devices, and furniture with conductive parts. Furthermore, with the introduction of biopolymers into 3D printing, the 3D printing technology itself can finally be regarded as sustainable.