Investigation of mechanical properties and morphology of multi-walled carbon nanotubes reinforced cellulose acetate fibers

Quazi Nahida Sultana, Md Mahmudul Hasan, Sakib Iqbal, Ishraq Shabib, Aniruddha Mitra, Mujibur Khan

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Cellulose acetate (CA) fibers were reinforced with multi-walled carbon nanotubes (MWCNTs) at 0.5%, 1.0%, 1.5% and 2.0%. Yield strength, ultimate tensile strength, fracture strain and toughness of the nanocomposite fiber increased up to 1.5 wt. % of the carbon nanotube (CNT) loading, however, further inclusion (2.0%) of MWCNTs in CA decreased the mechanical properties. Experimental properties were also compared with analytical predictions using a Shear lag model for strength and the rule of mixture for modulus. A solution spinning process, coupled with sonication, mixing, and extrusion, was used to process the CNT-reinforced composite fiber. Scanning electron microscopy (SEM) images of the cross sections of neat CA and CA-MWCNT fibers showed the formation of voids and irregular features. The enhanced interconnected fibrillation in the CNT-reinforced CA samples resulted in improved mechanical properties, which were observed by tensile testing. Fourier transform infrared spectroscopy (FTIR) spectra showed the area under the curve for C-H bonding after the inclusion of CNT. There was no significant shift of wavenumber for the inclusion of MWCNT in the CA matrix, which indicates that the sonication process of the CNT-loaded solution did not degrade the CA bonding structure.

Original languageEnglish
Article number42
JournalFibers
Volume5
Issue number4
DOIs
StatePublished - Dec 1 2017

Keywords

  • Cellulose acetate
  • Fibrils structure
  • Fourier transform infrared spectroscopy
  • Multi-walled carbon nanotube
  • Tensile properties

Fingerprint

Dive into the research topics of 'Investigation of mechanical properties and morphology of multi-walled carbon nanotubes reinforced cellulose acetate fibers'. Together they form a unique fingerprint.

Cite this