Abstract
Polyrotaxane (PR), a typical example of topological supramolecular architecture,consists of multiple cyclic molecules threaded onto a linear polymer backboneand capped with bulky end-groups. The PR system of polyethylene glycol andα-cyclodextrin(α-CD) has been extensively studied for its facile synthesis, unique molecular structure,and possible applications for various smart materials. We have previouslydemonstrated the fabrication of PR-based fibers without chemical cross-links by wetspinning of PR solution. In this paper, we investigate the crystal structure ofα-CDs in PR fibers and the effect of drawing on it. Theα-CDs in PR fiber are found to form hexagonal channel-type structure.The drawing process promotes formation of the packing arrangement ofα-CDs in thec-axis because ofthe sliding of α-CD molecules along the polymer backbone. In addition, we demonstrate the preparation ofan elastomeric PR film having similar network structure to the fibers and ethylene glycololigomer as plasticizer.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call