Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 47907, USA.
Macromol Rapid Commun. 2011 Jan 3;32(1):50-7. doi: 10.1002/marc.201000556. Epub 2010 Dec 3.
Here, we show that a poly(ethylene oxide) polymer can be physically cross-linked with silicate nanoparticles (Laponite) to yield highly extensible, bio-nanocomposite fibers that, upon pulling, stretch to extreme lengths and crystallize polymer chains. We find that both, nanometer structures and mechanical properties of the fibers respond to mechanical deformation by exhibiting strain-induced crystallization and high elongation. We explore the structural characteristics using X-ray scattering and the mechanical properties of the dried fibers made from hydrogels in order to determine feasibility for eventual biomedical use and to map out directions for further materials development.
在这里，我们展示了一种聚环氧乙烷聚合物可以通过硅酸盐纳米粒子（Laponite）物理交联，得到具有高度可拉伸性的生物纳米复合材料纤维，在拉伸时可以延伸到极长的长度并结晶聚合物链。我们发现，纤维的纳米结构和机械性能都通过表现出应变诱导结晶和高伸长率来对机械变形做出响应。我们使用 X 射线散射来探索结构特征，以及使用水凝胶制成的干纤维的机械性能，以确定最终用于生物医学用途的可行性，并为进一步的材料开发指明方向。
