Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/22635
Title: Coaxial electrospun polyurethane core-shell nanofibers for shape memory and antibacterial nanomaterials
Authors: Zhuo, HT
Hu, JL 
Chen, SJ
Keywords: Antibacterial
Electrospinning
Nanomaterials
Shape memory
Smart polymers
Issue Date: 2011
Publisher: Budapest Univ Technol & Econ
Source: Express polymer letters, 2011, v. 5, no. 2, p. 182-187 How to cite?
Journal: Express Polymer Letters 
Abstract: A novel kind of shape memory polyurethane (SMPU) nanofibers with core-shell nanostructure is fabricated using coaxial electrospinning. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) results show that nanofibers with core-shell structure or bead-on-string structure can be electrospun successfully from the core solution of polycaprolactone based SMPU (CLSMPU) and shell solution of pyridine containing polyurethane (PySMPU). In addition to the excellent shape memory effect with good shape fixity, excellent antibacterial activity against both gramnegative bacteria and gram-positive bacteria are achieved in the CLSMPU-PySMPU core-shell nanofiber. Finally, it is proposed that the antibacterial mechanism should be resulted from the PySMPU shell materials containing amido group in ?^ position and the high surface area per unit mass of nanofibers. Thus, the CLSMPU-PySMPU core shell nanofibers can be used as both shape memory nanomaterials and antibacterial nanomaterials.
URI: http://hdl.handle.net/10397/22635
ISSN: 1788-618X
DOI: 10.3144/expresspolymlett.2011.16
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