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Heat Transfer Research
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ISSN Imprimir: 1064-2285
ISSN En Línea: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.2013005903
pages 447-454

EFFECT OF TEMPERATURE ON THE CRATER-LIKE ELECTROSPINNING PROCESS

Yong Liu
Key Laboratory of Advanced Textile Composites, Ministry of Education of China, Tianjin 300387, China; School of Textiles, Tianjin Polytechnic University, 399 West Binshui Road, Xiqing District, Tianjin 300387, China
Wei Liang
School of Textiles, Tianjin Polytechnic University, 399 West Binshui Road, Xiqing District, Tianjin 300387, China
Wan Shou
School of Textiles, Tianjin Polytechnic University, 399 West Binshui Road, Xiqing District, Tianjin 300387, China
Ying Su
School of Textiles, Tianjin Polytechnic University, 399 West Binshui Road, Xiqing District, Tianjin 300387, China
Rui Wang
Key Laboratory of Advanced Textile Composites, Ministry of Education of China, Tianjin 300387, China; School of Textiles, Tianjin Polytechnic University, 399 West Binshui Road, Xiqing District, Tianjin 300387, China

SINOPSIS

Most solution electrospinning processes were performed at the ambient temperature. Few hot polymer solutions were used to produce electrospun nanofibers in the traditional electrospinning process, much less in electrospinning processes with a free liquid surface. In this presentation, poly(vinyl alcohol) solutions with different temperatures (20, 35, 50, and 65°C) were employed to fabricate nanofibers in a crater-like electrospinning process. All other electrospinning parameters, such as applied voltage, air pressure, and collective distance, were kept constant. The influence of solution temperature on the electrospinnability of solutions and the quality of prepared nanofibers were assessed. The results showed that the solution temperature exerted an appreciable influence on the viscosity of polymer solution, which in turn influenced the process of prediction of nanofibers and their quality. With increase in the solution temperature, the critical applied voltage and air pressure decreased. An ideal temperature is about 50°C for the production of nanofibers in these experiments. But a higher solution temperature caused a rapid evaporation of solvent in the solution, which caused aggravation of the solution electrospinnability.


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