Morphologies and crystal structures of styrene-acrylonitrile/isotactic polypropylene ultrafine fibers fabricated by melt electrospinning

2013 ◽  
Vol 53 (12) ◽  
pp. 2674-2682 ◽  
Author(s):  
Li Cao ◽  
Mu Dong ◽  
Anyang Zhang ◽  
Yong Liu ◽  
Weimin Yang ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Isotactic Polypropylene ◽  
Ultrafine Fibers ◽  
Melt Electrospinning ◽  
Styrene Acrylonitrile

The influence of crystal structures of nucleating agents on the crystallization behaviors of isotactic polypropylene

2006 ◽  
Vol 285 (1) ◽  
pp. 11-17 ◽  
Author(s):  
Wei-Min Hou ◽  
Gang Liu ◽  
Jian-Jun Zhou ◽  
Xia Gao ◽  
Yan Li ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Isotactic Polypropylene ◽  
Nucleating Agents ◽  
Crystallization Behaviors

Study on Technological Parameters Effecting on Fiber Diameter of Melt Electrospinning

2011 ◽  
Vol 332-334 ◽  
pp. 1550-1556 ◽  
Author(s):  
Xiao Na Wang ◽  
Yang Xu ◽  
Qu Fu Wei ◽  
Yi Bing Cai
Keyword(s):  
Lactic Acid ◽  
Fiber Diameter ◽  
Orthogonal Design ◽  
Jet Flow ◽  
Poly Lactic Acid ◽  
Technological Parameters ◽  
Melt Temperature ◽  
Ultrafine Fibers ◽  
Influencing Mechanism ◽  
Melt Electrospinning

Poly (Lactic Acid) ultrafine fibers were obtained from melt electrospinning in the present work, using a home-made device. To study the effect of main technological parameters on fiber diameter in melt electrospinning, orthogonal design was adopted to examine spinning distance, spinning voltage and melt temperature. Meanwhile, the motion of the jet flow was recorded to help explain the influencing mechanism. Results showed that spinning voltage had the highest impact on the average diameters compared to other considered parameters (spinning distance and melt temperature). fibers with smallest diameter could be produced at 15 kV, 10 cm and 190 o C.

scholarly journals ChiralAnsaMetallocenes with Cp Ring-Fused to Thiophenes and Pyrroles:  Syntheses, Crystal Structures, and Isotactic Polypropylene Catalysts  [J.Am. Chem. Soc.2001,123, 4763−4773]. 

2001 ◽  
Vol 123 (28) ◽  
pp. 6964-6964 ◽  
Author(s):  
John A. Ewen ◽  
Michael J. Elder ◽  
Robert L. Jones ◽  
Arnold L. Rheingold ◽  
Louise M. Liable-Sands ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Isotactic Polypropylene

scholarly journals Needleless Melt-Electrospinning of Biodegradable Poly(Lactic Acid) Ultrafine Fibers for the Removal of Oil from Water

Polymers ◽  
2017 ◽  
Vol 9 (12) ◽  
pp. 3 ◽  
Author(s):  
Haoyi Li ◽  
Yi Li ◽  
Weimin Yang ◽  
Lisheng Cheng ◽  
Jing Tan
Keyword(s):  
Lactic Acid ◽  
Poly Lactic Acid ◽  
Ultrafine Fibers ◽  
Melt Electrospinning ◽  
Biodegradable Poly

The Melt Electrospinning of Polycaprolactone (PCL) Ultrafine Fibers

2008 ◽  
Vol 1134 ◽  
Author(s):  
Chitrabala Subramanian ◽  
Samuel C. Ugbolue ◽  
Steven B. Warner ◽  
Prabir K. Patra
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Process Parameters ◽  
Applied Voltage ◽  
Fiber Diameter ◽  
Diameter Distribution ◽  
Electrospun Fibers ◽  
Ultrafine Fibers ◽  
Melt Electrospinning ◽  
Fiber Diameter Distribution

AbstractElectrospinning is a technique of producing nanofibers from polymer solution/melt solely under the influence of electrostatic forces. In this research, we investigated the formation of nanofibers by melt electrospinning polycaprolactone (PCL). The effect of process parameters such as molecular weight, applied voltage, and electrode separation on the fiber diameter was investigated. Controlling the process parameters could help increase the proportion of ultrafine fibers in the melt electrospun nonwoven mat. The velocity of the straight jets was in the range of 0.2-1 m/s. The melt electrospun fibers were characterized with respect to fiber diameter, distribution, mechanical properties and birefringence. Melt electrospun polycaprolactone fibers had a diameter distribution of the order of 5 -20 μm. The birefringence of the melt electrospun fibers increased with decrease in fiber diameter.

scholarly journals Fabrication of Ultrafine PPS Fibers with High Strength and Tenacity via Melt Electrospinning

Polymers ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 530 ◽  
Author(s):  
Zuo-Ze Fan ◽  
Hong-Wei He ◽  
Xu Yan ◽  
Ren-Hai Zhao ◽  
Yun-Ze Long ◽  
...  
Keyword(s):  
High Performance ◽  
Room Temperature ◽  
High Strength ◽  
Polyphenylene Sulfide ◽  
Crystallization Peak ◽  
Elongation At Break ◽  
Ultrafine Fibers ◽  
Melt Electrospinning ◽  
High Performance Resin ◽  
Uniform Diameter

Electrospinning (e-spinning) is an emerging technique to prepare ultrafine fibers. Polyphenylene sulfide (PPS) is a high-performance resin which does not dissolve in any solvent at room temperature. Commercial PPS fibers are produced mainly by meltblown or spunbonded process to give fibers ~20 μm in diameter. In this research, an in-house designed melt electrospinning device was used to fabricate ultrafine PPS fibers, and the e-spinning operation conducted under inert gas to keep PPS fibers from oxidizing. Under the optimum e-spinning conditions (3 mm of nozzle diameter, 30 kV of electrostatic voltage, and 9.5 cm of tip-to-collector distance), the as-spun fibers were less than 8.0 μm in diameter. After characterization, the resultant PPS fibers showed uniform diameter and structural stability. Compared with commercial PPS staple fibers, the obtained fibers had a cold crystallization peak and 10 times higher storage modulus, thereby offering better tensile tenacity and more than 400% elongation at break.

ChiralAnsaMetallocenes with Cp Ring-Fused to Thiophenes and Pyrroles:  Syntheses, Crystal Structures, and Isotactic Polypropylene Catalysts

2001 ◽  
Vol 123 (20) ◽  
pp. 4763-4773 ◽  
Author(s):  
John A. Ewen ◽  
Michael J. Elder ◽  
Robert L. Jones ◽  
Arnold L. Rheingold ◽  
Louise M. Liable-Sands ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Isotactic Polypropylene

scholarly journals Bubble Melt Electrospinning for Production of Polymer Microfibers

Polymers ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1246 ◽  
Author(s):  
Ye-Ming Li ◽  
Xiao-Xiong Wang ◽  
Shu-Xin Yu ◽  
Ying-Tao Zhao ◽  
Xu Yan ◽  
...  
Keyword(s):  
High Speed ◽  
Fiber Diameter ◽  
Heating Temperature ◽  
Polymer Melt ◽  
Taylor Cone ◽  
Ultrafine Fibers ◽  
Melt Electrospinning ◽  
Spinning Process ◽  
Metal Needle ◽  
Polymer Microfibers

In this paper, we report an interesting bubble melt electrospinning (e-spinning) to produce polymer microfibers. Usually, melt e-spinning for fabricating ultrafine fibers needs “Taylor cone”, which is formed on the tip of the spinneret. The spinneret is also the bottleneck for mass production in melt e-spinning. In this work, a metal needle-free method was tried in the melt e-spinning process. The “Taylor cone” was formed on the surface of the broken polymer melt bubble, which was produced by an airflow. With the applied voltage ranging from 18 to 25 kV, the heating temperature was about 210–250 °C, and polyurethane (TPU) and polylactic acid (PLA) microfibers were successfully fabricated by this new melt e-spinning technique. During the melt e-spinning process, polymer melt jets ejected from the burst bubbles could be observed with a high-speed camera. Then, polymer microfibers could be obtained on the grounded collector. The fiber diameter ranged from 45 down to 5 μm. The results indicate that bubble melt e-spinning may be a promising method for needleless production in melt e-spinning.

Sign in / Sign up

Export Citation Format

Share Document