title: A Template-Free Method toward Urchin-Like Polyaniline Microspheres.
abstract: Urchin-like PANI microspheres with an average diameter of 5-10 µm have been successfully prepared. Their surfaces consist of highly oriented nanofibers of ≈30 nm diameter and 1 µm length. The solvent composition plays an important role in the formation process of urchin-like PANI microspheres. The structure of the products has been characterized by FT-IR, UV-vis, and XRD. To investigate the self-assembly of urchin-like PANI microspheres, the effect of polymerization time on the morphology of the products has been studied. The morphological evolution process indicates that the urchin-like microspheres originate from the self-assembly of nanoplates, which then grow into urchin-like microstructures with nanofibers on the surface.
authors.affiliation: State Key Laboratory of Chemical Engineering, Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
authors.forename: Junsheng
authors.initials: J
authors.lastname: Wang
authors.forename: Jixiao
authors.initials: J
authors.lastname: Wang
authors.forename: Zhi
authors.initials: Z
authors.lastname: Wang
authors.forename: Fengbao
authors.initials: F
authors.lastname: Zhang