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Proceedings ArticleDOI

Effect of optimization parameters on the diameter of PVP fibers fabricated by electrospinning technique

24 Jul 2013-pp 733-736
TL;DR: In this paper, the effect of various experimental parameters such as distance between the tip and collector, voltage applied, flow rate have been optimized and the effect on the diameter of the fibers is studied using a high resolution optical microscope.
Abstract: Electrospinning is a versatile method to produce fibers to obtain sub-micron range structures. In this present work, we fabricated PVP fibers by electrospinning technique. Various experimental parameters such as distance between the tip and collector, voltage applied, flow rate have been optimized and the effect of these experimental parameters on the diameter of the fibers is studied using a high resolution optical microscope. For a flow rate of 0.5 ml/h, voltage of 25 kV, tip to collector distance of 12 cm and 10% polymer concentration, the fibers obtained were uniform with a diameter of 520 nm.
Citations
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Journal ArticleDOI
TL;DR: In this paper, the authors investigated electrospinning of polydiacetylene (PDA) and polyvinylpyrolidone (PVP) to develop thermochromic nanofibrous composites.

2 citations

Proceedings ArticleDOI
26 Sep 2020
TL;DR: The effect of electrospinning parameters on the morphology and efficiency of non-conjugated polar polymers PC71BM was systematically investigated by varying the applied voltage, needle tip-to-collector distance and flow rate respectively to provide better controllability of the organic solar cell (OSC) nanofiber characteristics towards better power conversion efficiency, improved reliability and lifetime encapsulation.
Abstract: The effect of electrospinning parameters on the morphology and efficiency of non-conjugated polar polymers PC71BM was systematically investigated by varying the applied voltage, needle tip-to-collector distance and flow rate respectively. The best PVP:PC71BM nanofiber efficiency is at applied voltage of 15kV which is about 8.75% followed by 1.0mL/hr flow rate and 10cm needle to collector distance with PCE=7.40% and 6.86% respectively. The device with applied voltage of 15kV exhibits enhanced short circuit current and fill factor by 17.60 mA cm−2 and 69.8% respectively with uniform and consistently aligned fabricated nanofiber. This is due to the extremely organized PVP:PC71BM nanofiber molecular structure that offers tightly arranged molecular chain structure and excellent chemical resistance which offers improves electron mobility and long term reliability of the device. This provides better controllability of the organic solar cell (OSC) nanofiber characteristics towards better power conversion efficiency, improved reliability and lifetime encapsulation.

Cites background from "Effect of optimization parameters o..."

  • ...This is due to the high electrostatic force at the solution surface induce more electrical charges that cause a fully stretch solution jet produced at the tip of needle that yields consistently aligned and uniform nanofiber as shown in samples A2 and A3 [17]....

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References
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Journal ArticleDOI
TL;DR: This review presents an overview of the electrospinning technique with its promising advantages and potential applications, and focuses on varied applications of electrospun fibers in different fields.

3,932 citations

MonographDOI
01 Jun 2005
TL;DR: An introduction to electrospinning and nanofibers is given in this article, where the authors introduce the concept of electrospindling and introduce the nanofiber nanostructure.
Abstract: An introduction to electrospinning and nanofibers , An introduction to electrospinning and nanofibers , کتابخانه دیجیتال جندی شاپور اهواز

1,916 citations

Journal ArticleDOI
TL;DR: In this article, the specific surface area of activated carbon nanofibers (ACNFs) activated at 700°C was the highest but mesopore volume fraction of that was lowest.
Abstract: Poly(acrylonitrile) solutions in dimethylformamide were electrospun to be webs consisting of 300 nm ultrafine fibers. The webs were oxidatively stabilized and activated by steam resulting in activated carbon nanofibers (ACNFs). The specific surface area of the ACNF activated at 700 °C was the highest but mesopore volume fraction of that was lowest. On the other hand, the ACNFs activated at 800 °C showed opposite trends to those activated at 700 °C. The high specific surface area, mainly due to the micropores, introduced maximum specific capacitance at low current density (173 F/g at 10 mA/g). The elevated volume fraction of mesopores gave maximum specific capacitance at high current density (120 F/g at 1000 mA/g). The behavior is explained on the basis of ion mobility in the pores.

474 citations

Journal ArticleDOI
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Abstract: 8 A B G3 C . 9 D F ( D $ ) C 5 $ ! 9 8 : ' 1 ' ( H ! ! ! 9 ) . 0 % 6 ! \" 5 @ 9 $ 6 9 4 \" D F ( # \" # $% 0 & 9 % A # $& #I I % 9 ! . J 9 A D BE ' H ( $E 5 DE ' ( ) ! &* :I: < $ $ 4 B ! B ' ! + , --% :I0 . H D H ! C 9 4 % . -/ 8#:& 8 H 6 A A 9 5 H ( 9 % A ( ) ! . %/ 88 ( $E C ) C 1 ( K ! $ $ (L BE ( ( 5 DE ( -#0< : 9 3 ( D B L 5 ) 5 5 5 DE B 9 H 9 D & I& 0 % ( 4 \" . \" 7* \" 5 7* @ ' 1 4 G A $ 9 % H ( % ) ! . $ 080 # 6 H B 3 D 9 $ ! 5 $ ' 9 ) ' ) H . :&0 & ! C $ $ % ( , 0 1 00 I . ' ( 9 C $ % $ 6 ' ( -@I#0 8< . B ) ! # % I## 8 A $ H ( ' ( ! C $ D 5 . -& 0I I

372 citations

Trending Questions (1)
How can terebinth fibers be produced using PVP?

The text does not provide any information about producing terebinth fibers using PVP.