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Effects of Fe 2+ ions on morphologies, microstructures and mechanical properties of electrospun nylon‐6 nanofibers
Author(s) -
Kimura Naotaka,
Kim ByoungSuhk,
Kim IckSoo
Publication year - 2014
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4500
Subject(s) - nanofiber , electrospinning , materials science , nylon 6 , fourier transform infrared spectroscopy , ion , chemical engineering , microstructure , polymer chemistry , composite material , polymer , chemistry , organic chemistry , engineering
In this study, nylon‐6 nanofiber mats containing Fe 2+ ions were fabricated via electrospinning. The resultant electrospun nylon‐6/ FeCl 2 nanofiber mats were characterized by SEM , TEM , Fourier transform IR spectroscopy, wide angle XRD and DSC . Unique morphological features, such as spider's‐web‐like morphologies, were observed and became evident with increasing additive Fe 2+ ions. The metastable γ form was predominant in the as‐spun nylon‐6 nanofibers. The relative intensity of such γ form gradually decreased with increasing additive Fe 2+ ions, indicative of transformation of the crystalline structure in the electrospun nylon‐6/ FeCl 2 nanofibers due to strong molecular interactions between the nylon‐6 backbone and the additive Fe 2+ ions. The effects of additive Fe 2+ ions on the mechanical properties of both nonwoven nanofiber mats and single nanofibers were investigated. In particular, Young's modulus of nylon‐6/ FeCl 2 single nanofibers gradually increased from 1.46 to 5.26 GPa with increasing additive Fe 2+ ions. © 2013 Society of Chemical Industry
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