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Issue 14, 2014
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Structure-induced enhancement of thermal conductivities in electrospun polymer nanofibers

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Abstract

Polymers that are thermally insulating in bulk forms have been found to exhibit higher thermal conductivities when stretched under tension. This enhanced heat transport performance is believed to arise from the orientational alignment of the polymer chains induced by tensile stretching. In this work, a novel high-sensitivity micro-device platform was employed to determine the axial thermal conductivity of individual Nylon-11 polymer nanofibers fabricated by electrospinning and post-stretching. Their thermal conductivity showed a correlation with the crystalline morphology measured by high-resolution wide-angle X-ray scattering. The relationship between the nanofiber internal structures and thermal conductivities could provide insights into the understanding of phonon transport mechanisms in polymeric systems and also guide future development of the fabrication and control of polymer nanofibers with extraordinary thermal performance and other desired properties.

Graphical abstract: Structure-induced enhancement of thermal conductivities in electrospun polymer nanofibers

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Publication details

The article was received on 27 Jan 2014, accepted on 30 Apr 2014 and first published on 05 Jun 2014


Article type: Paper
DOI: 10.1039/C4NR00547C
Citation: Nanoscale, 2014,6, 8283-8291
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    Structure-induced enhancement of thermal conductivities in electrospun polymer nanofibers

    Z. Zhong, M. C. Wingert, J. Strzalka, H. Wang, T. Sun, J. Wang, R. Chen and Z. Jiang, Nanoscale, 2014, 6, 8283
    DOI: 10.1039/C4NR00547C

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