Preparation of PVP Helical Fibres by Electrospinning and Study on the Mechanism of Helix Formation

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Preparation of PVP Helical Fibres by Electrospinning and Study on the Mechanism of Helix Formation

DU Jian-Shi¹; YANG Qing-Biao¹; WANG Yong-Zhi¹; YANG Song-Tao¹; BAI Jie¹; WANG Shu-Gang¹; SONG Yan¹; LI Yao-Xian^1*; WANG Ce^2*

1. College of Chemistry, Jilin University, Changchun 130023, China;
2. Alan G. Macdiamid Institute, Jilin University, Changchun 130012, China

Received:2005-06-10 Revised:1900-01-01 Online:2006-06-10 Published:2006-06-10
Contact: LI Yao-Xian1; WANG Ce

Abstract

Abstract: Helical fibres of PVP were fabricated by electrospinning. The morphologies of helical fibre were observed by Scanning Electron Microscopy. PVP ethanol solutions with different mass fractions(12%, 14%, 16%, 20% and 24%) were electrospun at the voltage of 9 kV. With increase of PVP mass fraction, the morphologies of PVP fiber changed from straight, helical, folded to disordered form. Helical fibres were obtained when the mass fractions of PVP solution changed in the range of 16%-20%. The solutions were also electrospun at different voltages from 6 kV to 13 kV, respectively. The result show those regular helical fibres could be obtained in a wide voltage range when PVP solution with a mass fration of 20% was electrospun. The mechanism of the formation of helical fibre was discussed. Coulomb excluding force between static charge carried by fibres during the process of electrospinning was the main factor to form helical fibre.

Key words: Electrospinning, Polyvinyl pyrrolidone(PVP), Helical fibre

CLC Number:

O631

TrendMD:

DU Jian-Shi¹; YANG Qing-Biao¹; WANG Yong-Zhi¹; YANG Song-Tao¹; BAI Jie¹; WANG Shu-Gang¹; SONG Yan¹; LI Yao-Xian^1*; WANG Ce^2*. Preparation of PVP Helical Fibres by Electrospinning and Study on the Mechanism of Helix Formation[J]. Chem. J. Chinese Universities, doi: .

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Preparation of PVP Helical Fibres by Electrospinning and Study on the Mechanism of Helix Formation

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