68. Hierarchical Structure in Oriented Fibers of a Dendronized Polymer
作者：Shu Feng, Xingquan Xiong, Guoliang Zhang, Nan Xia, Yongming Chen*, and Wei Wang*
關(guān)鍵字：Dendronized Polymer; Fiber; Hierarchical Structure
論文來源：期刊
具體來源：Macromolecules
發(fā)表時(shí)間：2009年
Herein we report the fabrication and study of hierarchically structured fibers of a dendronized polymer that were simply prepared by drawing out from their columnar phase in melt. At first, the combined SEM and SAXS results indicate that the fibers contain fibrils that align along the axial direction and have a diameter of 
200 nm. Further SAXS characterizations confirm an oriented hexagonally packed cylindrical (HPC) structure assembling in the fibrils. At the molecular level, a wormlike single molecular conformation was visualized by AFM, indicating its relatively stiffer structure compared with conventional polymers. Because of this feature, the dendronized polymer can be fabricated into fibers with a highly ordered structure. Therefore, the hierarchical structure that is found in the fibers sheds light on the possible mechanism of the self-organization of the dendronized polymer on different scales.