Stable jet electrospinning for easy fabrication of aligned ultrafine fibers

2012 ◽  
Vol 22 (37) ◽  
pp. 19634 ◽  
Author(s):  
Huihua Yuan ◽  
Shifang Zhao ◽  
Hongbin Tu ◽  
Biyun Li ◽  
Qin Li ◽  
...  
Keyword(s):  
Ultrafine Fibers

Postharvest quality and antioxidant activity extension of strawberry fruit using allyl isothiocyanate encapsulated by electrospun zein ultrafine fibers

LWT ◽  
2021 ◽  
Vol 143 ◽  
pp. 111087
Author(s):  
Rosana Colussi ◽  
Wyller Max Ferreira da Silva ◽  
Barbara Biduski ◽  
Shanise Lisie Mello El Halal ◽  
Elessandra da Rosa Zavareze ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Allyl Isothiocyanate ◽  
Postharvest Quality ◽  
Strawberry Fruit ◽  
Ultrafine Fibers

Preparation of Carbon Nanofibers from Polyacrylonitrile Nanofibers by Electrospinning

2011 ◽  
Vol 415-417 ◽  
pp. 642-647
Author(s):  
En Zhong Li ◽  
Da Xiang Yang ◽  
Wei Ling Guo ◽  
Hai Dou Wang ◽  
Bin Shi Xu
Keyword(s):  
Electron Microscope ◽  
Carbon Nanofibers ◽  
Photoelectron Spectroscopy ◽  
Solution Concentration ◽  
Dimethyl Formamide ◽  
Ultrafine Fibers ◽  
X Ray ◽  
Scanning Electron ◽  
Pan Fibers

Ultrafine fibers were electrospun from polyacrylonitrile (PAN)/N,N-dimethyl formamide (DMF) solution as a precursor of carbon nanofibers. The effects of solution concentration, applied voltage and flow rate on preparation and morphologies of electrospun PAN fibers were investigated. Morphologies of the green fibers, stabilized fibers and carbonized fibers were compared by scanning electron microscope (SEM). The diameter of PAN nanofibers is about 450nm and the distribution of diameter is well-proportioned. Characterization of the elements changes of fibers were performed by X-ray photoelectron spectroscopy (XPS).

scholarly journals Study on the Morphologies and Formational Mechanism of Poly(hydroxybutyrate-co-hydroxyvalerate) Ultrafine Fibers by Dry-Jet-Wet-Electrospinning

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Shuqi Zhu ◽  
Hao Yu ◽  
Yanmo Chen ◽  
Meifang Zhu
Keyword(s):  
Fiber Surface ◽  
Double Diffusion ◽  
Electrospun Fibers ◽  
Surface Porosity ◽  
Morphological Comparison ◽  
Ultrafine Fibers ◽  
Stability And Instability ◽  
Boundary Of Stability

Dry-jet-wet-electrospinning (DJWE) was carried out to study the formational mechanism of poly(hydroxybutyrate-co-hydroxyvalerate) electrospun fibers. Morphological comparison between normal electrospinning (NE) and DJWE was investigated. The results showed that jet could solidify quickly in DJWE to avoid bead collapse or fiber coherence. Jet structures could be maintained at very low collection distance. Beanpod-like beads, which were named as primary beads, could be seen at the boundary of stability and instability section and divided into spindle-like beads with longer collection distance. Bead-free electrospun fibers from DJWE had few bonding points among each other, and fast solidification and double-diffusion led to rough and shriveled fiber surface. DJWE mats were higher hydrophobic than that from NE due to more loose structure and higher surface porosity. Higher bead ratio on the surface and rounder bead structure resulted in higher hydrophobicity.

Technique to Measure Adhesive Forces Between Electrospun Nanofibers

2009 ◽  
Vol 1240 ◽  
Author(s):  
Qiang Shi ◽  
Kai-Tak Wan ◽  
Shing-Chung Wong ◽  
Pei Chen ◽  
Todd A. Blackledge
Keyword(s):  
Unit Area ◽  
Fiber Diameter ◽  
Electrospun Nanofibers ◽  
Amorphous Region ◽  
Adhesive Force ◽  
Degree Of Crystallinity ◽  
Scanning Calorimetry ◽  
Ultrafine Fibers ◽  
Dry Adhesion ◽  
Adhesive Forces

AbstractDue to the difficulty in handling nanofibers, little is reported and understood on the dry adhesion between electrospun nanofibers. In this study, we develop a technique to measure the dry adhesive forces between electrospun nanofibers. Of critical importance is the ability to mimic naturally occurring dry adhesion such as that between gecko's and spider's foot hairs and untreated surfaces. The adhesion test was performed on two poly(e-caprolactone) electrospun ultrafine fibers using a nanoforce tensile tester. It was found that the adhesive force per unit area increased with decreasing fiber diameter. The degree of crystallinity, order parameters of macromolecules in the amorphous region and crystallite orientation of the spun fibers were determined by the differential scanning calorimetry (DSC) and wide angle X-ray diffraction (WAXD). The high measured adhesion between single PCL fibers in comparison to other reported values was attributed to crystal orientation due to electrospinning and the increase of adhesive force per unit area with decreasing fiber diameter.

Porous electrospun ultrafine fibers via a liquid–liquid phase separation method

2012 ◽  
Vol 291 (5) ◽  
pp. 1293-1296 ◽  
Author(s):  
Zhimei Wei ◽  
Quanchao Zhang ◽  
Lihua Wang ◽  
Xiaojun Wang ◽  
Shengru Long ◽  
...  
Keyword(s):  
Phase Separation ◽  
Liquid Phase ◽  
Liquid Phase Separation ◽  
Separation Method ◽  
Ultrafine Fibers ◽  
Liquid Liquid Phase Separation

Solvent-free electrospinning: opportunities and challenges

2017 ◽  
Vol 8 (2) ◽  
pp. 333-352 ◽  
Author(s):  
Bin Zhang ◽  
Xu Yan ◽  
Hong-Wei He ◽  
Miao Yu ◽  
Xin Ning ◽  
...  
Keyword(s):  
Solvent Free ◽  
Ultrafine Fibers ◽  
Rich Variety

Electrospinning (e-spinning) has attracted tremendous attention because this technology provides a simple and versatile method for fabricating ultrafine fibers from a rich variety of materials including polymers, composites, and ceramics.

Structure-morphology impact upon segmental dynamics and diffusion in the biodegradable ultrafine fibers of polyhydroxybutyrate-polylactide blends

2019 ◽  
Vol 117 ◽  
pp. 208-216 ◽  
Author(s):  
Alexey Iordanskii ◽  
Svetlana Karpova ◽  
Anatoliy Olkhov ◽  
Pavel Borovikov ◽  
Natalia Kildeeva ◽  
...  
Keyword(s):  
Segmental Dynamics ◽  
Ultrafine Fibers ◽  
Structure Morphology ◽  
And Diffusion

Effect of modified ZnO nanoparticle on the properties of polylactide ultrafine fibers

2019 ◽  
Vol 136 (18) ◽  
pp. 47446 ◽  
Author(s):  
Yeon Sung Ryu ◽  
Ick-Soo Kim ◽  
Seong Hun Kim
Keyword(s):  
Zno Nanoparticle ◽  
Ultrafine Fibers

BCNU-loaded PEG–PLLA ultrafine fibers and their in vitro antitumor activity against Glioma C6 cells

2006 ◽  
Vol 114 (3) ◽  
pp. 307-316 ◽  
Author(s):  
Xiuling Xu ◽  
Xuesi Chen ◽  
Xiaoyi Xu ◽  
Tiancheng Lu ◽  
Xin Wang ◽  
...  
Keyword(s):  
Antitumor Activity ◽  
C6 Cells ◽  
Ultrafine Fibers ◽  
Glioma C6

Electrospinning of Sodium Alginate-Pectin Ultrafine Fibers

2010 ◽  
Vol 75 (1) ◽  
pp. C100-C107 ◽  
Author(s):  
Solmaz Alborzi ◽  
Loong-Tak Lim ◽  
Yukio Kakuda
Keyword(s):  
Sodium Alginate ◽  
Ultrafine Fibers
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