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Polymer nanofibers prepared by low-voltage near-field electrospinning 被引量:6
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作者 郑杰 龙云泽 +5 位作者 孙彬 张志华 邵峰 张红娣 张志明 黄家寅 《Chinese Physics B》 SCIE EI CAS CSCD 2012年第4期20-25,共6页
Elcctrospiiming is a straightforward method to produce micro/nanoscale fibers from polymer solutions typically using an operating voltage of 10 kV 30 kV and spinning distance of 10 cm 20 cm. In this paper, polyvinyl p... Elcctrospiiming is a straightforward method to produce micro/nanoscale fibers from polymer solutions typically using an operating voltage of 10 kV 30 kV and spinning distance of 10 cm 20 cm. In this paper, polyvinyl pyrrolidone (PVP) non-woven nanofibers with diameters of 200 nm 900 nm were prepared by low-voltage near-field electrospinning with a working voltage of less than 2.8 kV and a spinning distance of less than 10 mm. Besides the uniform fibers, beaded-fibers were also fabricated and the formation mechanism was discussed. Particularly, a series of experiments were carried out to explore the influence of processing variables on the formation of near-field electrospun PVP nanofibers, including concentration, humidity, collecting position, and spinning distance. 展开更多
关键词 NANOFIBERS near-field electrospinning beaded-fibers
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Disc-Electrospun PCL Nanofiber Formed Micro-patterned Structure Scaffold
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作者 PAN Xin LI Da-wei +3 位作者 ZENG Zhi-wen SUN Bin-bin KE Qin-fei MO Xiu-mei 《Journal of Donghua University(English Edition)》 EI CAS 2014年第5期595-598,共4页
Disc-electrospinning using a disc as spinneret and a rotary drum as collector is a novel technology to prepare nanofiber which has been applied in tissue engineering scaffolds.In this study,nanofibrous mats with micro... Disc-electrospinning using a disc as spinneret and a rotary drum as collector is a novel technology to prepare nanofiber which has been applied in tissue engineering scaffolds.In this study,nanofibrous mats with micro-patterned structure were fabricated via disc-electrospinning.Poly( #-caprolactone)( PCL) was dissolved in trifluoroethanol( TFE) at various concentrations( 2%-7%)( w / v)for electrospinning and the applied voltage ranged from 40 to 70 kV.Scanning electron microscopy( SEM) was employed to observe the morphology of the nanofibrous scaffolds.SEM images illustrated that the nanofibers with beads formed micro-patterned structure such as triangles and other polygons.The average diameter of nanofibers presented various size with the concentration increased from 2% to 7%.The beads on the nanofibers constructed the vertexes of the polygons,while nanofibers bridged between adjacent vertexes.The concentration of solution and applied voltage may be two dominant factors to influence the topological structure of the nanofibrous scaffolds.Cells cultured on the micro-patterned scaffold spread along the edges of the polygons.The scaffold with patterned structure may have a promising application in tissue engineering. 展开更多
关键词 disc-electrospun poly(ε-caprolactone)(PCL) patterned structure beaded-fibers SCAFFOLD
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Polymer nanofibers prepared by low-voltage near-field electrospinning
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作者 郑杰 龙云泽 +5 位作者 孙彬 张志华 邵峰 张红娣 张志明 黄家寅 《Chinese Physics B》 SCIE EI CAS CSCD 2012年第4期24-29,共6页
Electrospinning is a straightforward method to produce micro/nanoscale fibers from polymer solutions typically using an operating voltage of 10 kV–30 kV and spinning distance of 10 cm–20 cm. In this paper, polyvinyl... Electrospinning is a straightforward method to produce micro/nanoscale fibers from polymer solutions typically using an operating voltage of 10 kV–30 kV and spinning distance of 10 cm–20 cm. In this paper, polyvinyl pyrrolidone (PVP) non-woven nanofibers with diameters of 200 nm–900 nm were prepared by low-voltage near-field electrospinning with a working voltage of less than 2.8 kV and a spinning distance of less than 10 mm. Besides the uniform fibers, beaded-fibers were also fabricated and the formation mechanism was discussed. Particularly, a series of experiments were carried out to explore the influence of processing variables on the formation of near-field electrospun PVP nanofibers, including concentration, humidity, collecting position, and spinning distance. 展开更多
关键词 NANOFIBERS near-field electrospinning beaded-fibers
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