Self-assembled hybrid nanofibers confer a magnetorheological supramolecular hydrogel
作者:Zhimou Yang、Hongwei Gu、Jun Du、Jinhao Gao、Bei Zhang、Xixiang Zhang、Bing Xu
DOI:10.1016/j.tet.2007.02.009
日期:2007.7
application of a small magnetic field. We use self-assembly to create hybrid nanofibers, which consist of supramolecular hydrogelators and magnetic nanoparticles, as the matrices of the hydrogel. Localized in the nanofibers at a distance of 1–2 nm, the magnetic nanoparticles occupy a small volume fraction of the hydrogel, significantly enhancing the magnetic dipole interactions between them, which
大多数由液体中的磁性微粒组成的磁流变材料需要大量的磁性微粒和较大的磁场才能达到所需的效果。在这里,我们报告了一种新型的磁流变材料,该材料由少量磁性纳米颗粒(0.8 wt%)组成,但在施加小磁场时表现出较大的流变变化(即,凝胶-溶胶转变)。我们使用自组装来创建杂化纳米纤维,该杂化纳米纤维由超分子水凝胶剂和磁性纳米颗粒组成,作为水凝胶的基质。磁性纳米粒子位于纳米纤维中1-2 nm处,占据了水凝胶的一小部分体积,显着增强了它们之间的磁偶极相互作用,从而导致了较大的磁响应。