Effect of Carboxylic Acid Group of Functionalized Carbon Nanotubes on Properties of Electrospun Polyacrylonitrile (PAN) Fibers
- Effect of Carboxylic Acid Group of Functionalized Carbon Nanotubes on Properties of Electrospun Polyacrylonitrile (PAN) Fibers
- 박옥경; 김주형; 이성호; 이중희; 정용식; 김준경; 구본철
- polyaclylonitrile; carbon nanotubes; carbon fibers; electrospinning; mechanical properties
- Issue Date
- 폴리머; Polymer Korea
- VOL 35, NO 5, 472-477
- 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.
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