scholarly journals A characterization of micromanipulator controlled dry spinning of micro- and nanoscale polymer fibers.

2004 ◽  
Author(s):  
Scott Berry
Keyword(s):  
Polymer Fibers ◽  
Dry Spinning

Characterization of micromanipulator-controlled dry spinning of micro- and sub-microscale polymer fibers

2006 ◽  
Vol 16 (9) ◽  
pp. 1825-1832 ◽  
Author(s):  
Scott M Berry ◽  
Steven A Harfenist ◽  
Robert W Cohn ◽  
Robert S Keynton
Keyword(s):  
Polymer Fibers ◽  
Dry Spinning

scholarly journals Multiscale characterization of chemical–mechanical interactions between polymer fibers and cementitious matrix

2014 ◽  
Vol 48 ◽  
pp. 9-18 ◽  
Author(s):  
Daniel Hernández-Cruz ◽  
Craig W. Hargis ◽  
Sungchul Bae ◽  
Pierre A. Itty ◽  
Cagla Meral ◽  
...  
Keyword(s):  
Polymer Fibers ◽  
Cementitious Matrix

scholarly journals Elastic characterization of polymer fibers by laser Doppler vibrometry

2017 ◽  
Vol 99 ◽  
pp. 88-97 ◽  
Author(s):  
Ludovic Labelle ◽  
N.B. Roozen ◽  
Jan Vandenbroeck ◽  
Shuichi Akasaka ◽  
Christ Glorieux
Keyword(s):  
Laser Doppler ◽  
Polymer Fibers ◽  
Laser Doppler Vibrometry

Oxide Ceramic Nano/Microfibers Prepared by Needle-Less Electrospinning - Materials for Fiber Reinforced Composites

2018 ◽  
Vol 784 ◽  
pp. 114-119 ◽  
Author(s):  
Ivan Shepa ◽  
Erika Mudra ◽  
Marek Vojtko ◽  
Maria Podobova ◽  
Ján Dusza
Keyword(s):  
Titanium Isopropoxide ◽  
Treatment Temperature ◽  
Polymer Fibers ◽  
Oxide Ceramic ◽  
Reinforced Composites ◽  
Advanced Composites ◽  
Precursor Polymer ◽  
Polycrystalline Ceramics ◽  
Oval Shape

Nano/microfibers are already widely used as the reinforcements in various types of advanced composites for reducing weight, improving specific properties like hardness, fracture toughness and other mechanical ones. This contribution describes the preparation of the titanium dioxide nano/microfibers by needle-less electrospinning, along with a detailed characterization of the obtained polycrystalline ceramics. For spinning solutions preparation the polyvinylpyrrolidone (PVP), titanium isopropoxide (TTIP), ethanol and acetic acid were used. Influence of the ceramic precursor concentration in the spinning solution showed that decreasing the concentration of TTIP from 30 to 10 wt.% has no effect on the precursor polymer fibers shape. However, it causes deviation from the fibers oval shape (in the cross-section) up to the formation of solid ribbons or even multilayered porous ribbons. Heat treatment temperature defined the phase composition of the obtained oxide ceramics – stabile polycrystalline rutile fibers were obtained at 600 °C.

Dry Spinning of Polymer Fibers in Ternary Systems

2004 ◽  
Vol 19 (3) ◽  
pp. 254-261 ◽  
Author(s):  
Z. Gou ◽  
A. J. McHugh
Keyword(s):  
Ternary Systems ◽  
Polymer Fibers ◽  
Dry Spinning

Preparation and Characterization of Gradient-Index Polymer Fibers

1997 ◽  
pp. 71-78 ◽  
Author(s):  
W. C. Chen ◽  
J. H. Chen ◽  
S. Y. Yang ◽  
J. J. Chen ◽  
Y. H. Chang ◽  
...  
Keyword(s):  
Polymer Fibers ◽  
Gradient Index

Preparation and Characterization of Aligned Carbon Nanotube Fibers

2013 ◽  
Vol 275-277 ◽  
pp. 1794-1797
Author(s):  
Yong Feng Luo ◽  
Cui Zhou ◽  
Xi Li ◽  
Shui Li ◽  
Zhong Zhi Sheng
Keyword(s):  
Carbon Nanotube ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Deposition Process ◽  
High Quality ◽  
Dry Spinning ◽  
Excellent Mechanical Property ◽  
Cnt Arrays ◽  
Carbon Nanotube Fibers

High-quality carbon nanotube (CNT) arrays have been synthesized through a chemical vapor deposition process. The Fe/Al2O3 on silicon was used as the catalyst, ethylene as the carbon source, and a mixture gas of Ar and H2 gases as the carrying gas. With spinnable CNT arrary as initial materials, aligned carbon nanotube fibers were continuously fabricated by dry spinning. And then we study the excellent mechanical property of the carbon nanotube fibers.

Experimental Characterization of the Whipping Instability of Charged Microjets in Liquid Baths

2010 ◽  
Vol 1272 ◽  
Author(s):  
Guillaume Riboux ◽  
Álvaro Gómez-Marín ◽  
Antonio Barrero ◽  
Alberto Fernández-Nieves ◽  
Ignacio G. Loscertales
Keyword(s):  
Electric Energy ◽  
Theoretical Models ◽  
Polymer Fibers ◽  
Liquid Jets ◽  
Experimental Characterization ◽  
Thin Polymer ◽  
Electrified Jets ◽  
Liquid Flows ◽  
Capillary Liquid

AbstractCapillary liquid flows have shown their ability to generate micro and nano-structures which can be used to synthesize material in the micro or nanometric size range. For instance, electrified capillary liquid jets issued from a Taylor are broadly used to spin micro and nanofibers when the liquid consists of a polymer solution or melt, a process termed electrospinning. In this process, the electrified capillary jet may develop a nonaxisymmetric instability, usually referred to as whipping instability, which very efficiently transforms electric energy into stretching energy, thus leading to the formation of extremely thin polymer fibers. Even though non axysimmetric instabilities of electrified jets were first investigated some decades ago, the existing theoretical models provide a qualitative understanding of the phenomenon but none of them is accurate enough when compared with experimental results. This whipping instability usually manifests itself as fast and violent lateral motion of the charged jet, which makes it difficult its characterization in the laboratory. However, this instability also develops when electrospinning is performed within a liquid bath instead of air. Although it is essentially the same phenomenon, the frequency of the whipping oscillations is much slower in the former case than in the latter, thus allowing detailed experimental characterization of the whipping instability. Furthermore, since the outer fluid is a liquid, its density and viscosity may now be used to influence the dynamics of the electrified capillary jet. In this work we present and rationalize the experimental data collecting the influence of the main parameters on the whipping characteristics of the electrified jet (frequency, amplitude, etc.).

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