Manufacturing of robust natural fiber preforms utilizing bacterial cellulose as binder.
Manufacturing of robust natural fiber preforms utilizing bacterial cellulose as binder.
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DOI：
10.3791/51432
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发表时间：
2014-05-22
期刊：
影响因子：
--
通讯作者：
Bismarck A
中科院分区：
文献类型：
--
作者：
Lee KY;Shamsuddin SR;Fortea-Verdejo M;Bismarck A
本文提出了一种制造刚性强的天然纤维预制体的新方法。这种方法基于造纸过程，将松散和短剑麻纤维分散到含有细菌纤维素的水悬浮液中。然后对纤维和纳米纤维素悬浮液进行过滤（使用真空或重力），将湿滤饼压出多余的水分，然后进行干燥步骤。这将导致细菌纤维素网络的角质化，将松散的天然纤维固定在一起。我们的方法特别适用于制造刚性和坚固的亲水性纤维预制体。这种纤维的多孔性和亲水性导致了显著的吸水，吸收了分散在悬浮液中的细菌纤维素。然后，细菌纤维素将被过滤在这些纤维的表面，形成细菌纤维素涂层。当松散的细菌纤维素悬浮液被过滤和干燥时，邻近的细菌纤维素形成一个网络并形成角状，将松散的纤维固定在一起。将细菌纤维素引入预制体后，纤维预制体的机械性能显著提高。这可以归因于细菌纤维素网络的高刚度和强度。有了这种预制体，可再生的高性能分层复合材料也可以通过使用传统的复合材料生产方法，如树脂膜注入（RFI）或树脂传递成型（RTM）来制造。在这里，我们还描述了使用双袋真空辅助树脂注入的可再生分层复合材料的制造。
A novel method of manufacturing rigid and robust natural fiber preforms is presented here. This method is based on a papermaking process, whereby loose and short sisal fibers are dispersed into a water suspension containing bacterial cellulose. The fiber and nanocellulose suspension is then filtered (using vacuum or gravity) and the wet filter cake pressed to squeeze out any excess water, followed by a drying step. This will result in the hornification of the bacterial cellulose network, holding the loose natural fibers together. Our method is specially suited for the manufacturing of rigid and robust preforms of hydrophilic fibers. The porous and hydrophilic nature of such fibers results in significant water uptake, drawing in the bacterial cellulose dispersed in the suspension. The bacterial cellulose will then be filtered against the surface of these fibers, forming a bacterial cellulose coating. When the loose fiber-bacterial cellulose suspension is filtered and dried, the adjacent bacterial cellulose forms a network and hornified to hold the otherwise loose fibers together. The introduction of bacterial cellulose into the preform resulted in a significant increase of the mechanical properties of the fiber preforms. This can be attributed to the high stiffness and strength of the bacterial cellulose network. With this preform, renewable high performance hierarchical composites can also be manufactured by using conventional composite production methods, such as resin film infusion (RFI) or resin transfer molding (RTM). Here, we also describe the manufacturing of renewable hierarchical composites using double bag vacuum assisted resin infusion.
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影响因子：
5.2
作者：
Gauthier, R;Joly, C;Escoubes, M
通讯作者：
Escoubes, M
影响因子：
29.4
作者：
Juntaro, Julasak;Pommet, Marion;Bismarck, Alexander
通讯作者：
Bismarck, Alexander
影响因子：
2.6
作者：
Juntaro, Julasak;Pommet, Marion;Bismarck, Alexander
通讯作者：
Bismarck, Alexander
影响因子：
4.6
作者：
Lee, Koon-Yang;Buldum, Gizem;Bismarck, Alexander
通讯作者：
Bismarck, Alexander
DOI：
10.1016/s1359-835x(97)00042-0
发表时间：
1997-01-01
影响因子：
8.7
作者：
Gassan, J;Bledzki, AK
通讯作者：
Bledzki, AK