Journal
JOURNAL OF POLYMER RESEARCH
Volume 25, Issue 3, Pages -Publisher
SPRINGER
DOI: 10.1007/s10965-018-1477-7
Keywords
Hollow nanofiber yarn; Polyamide 6; Multi-wall carbon nanotubes; Surface area
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Core-sheath nanofibrous yarns were obtained through electrospinning of polyamide 6 (PA6) solution containing different concentrations of multi-wall carbon nanotubes (MWNTs) as sheath and PVA multifilament as the yarn core. By dissolving PVA, for obtaining conductive hollow nanofibrous PA6/MWNTs yarn, two types of porosity could be obtained including hollow central tube due to the structure of hollow yarn and nano-porous areas embedded in electrospun nanofibers. SEM results showed that the diameters of nanofibers were varying in the range of 103-145 nm obeying MWNTs concentrations and TEM results revealed that the MWNTs were embedded in nanofiber matrix as straight and aligned form. DSC analysis showed that electrospinning process caused the formation of less-ordered gamma phase in nanofibers. The electrical conductivity of yarns increased from 10(-13) S m(-1) to 2.4 x 10(-6) S m(-1) with increasing the concentration of nanotubes from 0 wt.% to 7 wt.%.
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