Effect of Carboxylic Acid Group of Functionalized Carbon Nanotubes on Properties of Electrospun Polyacrylonitrile (PAN) Fibers

Title
Effect of Carboxylic Acid Group of Functionalized Carbon Nanotubes on Properties of Electrospun Polyacrylonitrile (PAN) Fibers
Authors
박옥경김주형이성호이중희정용식김준경구본철
Keywords
polyaclylonitrile; carbon nanotubes; carbon fibers; electrospinning; mechanical properties
Issue Date
2011-09
Publisher
폴리머; Polymer Korea
Citation
VOL 35, NO 5, 472-477
Abstract
To study the effects of the acid group of functionalized MWNT (Multi walled carbon nanotube) on the thermal and mechanical properties of PAN (polyacrylonitrile) nanofibers, acid (H2SO4 /HNO3) treated MWNT (O-MWNT) were further functionalized by diazonium salt reaction with 5-aminoisophthalic acid (IPA). Compared to O-MWNT, IPA-MWNT with isophthalic acid group showed the better dispersion stability in polar solvents and IPA-MWNT/PAN composite film displayed lower heat of reaction (ΔH) than that of homo PAN when stabilized under air atmosphere. The continuous electrospun fibers were prepared using a conductive water bath. PAN fibers containing 1 wt% of IPA-MWNT showed an increase of tensile strength by 100% and tensile modulus by 240% compared to the PAN fibers without IPA-MWNT.
URI
http://pubs.kist.re.kr/handle/201004/39794
ISSN
0379-153X
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KIST Publication > Article
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