【摘 要】
：
In this study,a novel approach and the related equipment of coaxial electrospinning has been developed to fabricate a new ultrafine Polysulfone amide(PSA)/Polyurethane(PU)coaxial fibers at nano-scale
【机 构】
：
Shanghai University of Engineering Science,Shanghai,201620,China
【出 处】
：
2015上海纺织服装创意创新研究生学术论坛暨第九届纺织服装创新国际论坛
论文部分内容阅读
In this study,a novel approach and the related equipment of coaxial electrospinning has been developed to fabricate a new ultrafine Polysulfone amide(PSA)/Polyurethane(PU)coaxial fibers at nano-scale with the PSA as the core and the PU as the shell of the blended fibers.As the co-spinneret has effect on the structure and properties of the spun fiber,three types of co-spinnerets with different diameters were designed to investigate its effect on the fabricated fibers in this research.Three series of PSA/PU coaxial fibers were spun using the self-developed coaxial electrospinning equipment,and these fibers were characterized systematically using SEM,TEM and TG.High-speed photography was used to capture the image of the tailor cone and jet motion of polymer fluid during the spinning process,which can give a detailed description of the electro-spinning for the further theoretical analysis.The three-dimensional(3D)electric field simulation was also carried out to model the differences of electric field.Out experimental results show that the mechanical and thermal properties of the core-shell fibers fabricated in this research have been improved in the comparison with the fibers spun using the conventional single needle electrospinning,since it has the core-shell structure so that it can combine the excellent thermal properties of the PSA and the excellent mechanical properties of the PU.The new developed PSA/PU fibers could be used in the industrial applications or the development of high performance apparels in the future.
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