Publication Type:

Journal Article

Authors:

Dhakshnamoorthy, M.a; Ramakrishnan, S.b; Vikram, S.a; Kothurkar, N.K.b; M.a Rangarajan; Vasanthakumari, R.a

Source:

Journal of Nanoscience and Nanotechnology, American Scientific Publishers, Volume 14, Number 7, p.5011-5018 (2014)

URL:

http://www.scopus.com/inward/record.url?eid=2-s2.0-84903843688&partnerID=40&md5=ee2f15c3331644384b53dfce73b8df50

Keywords:

Carbon nanotubes, Electrospinning, High-resolution scanning electron microscopies, Hydrogen bonding interactions, Hydrogen bonds, In-situ preparations, Nanofiber composites, Nanofibers, Polyimides, Pyromellitic dianhydride, scanning electron microscopy, Thermodynamic properties, Thermogravimetric analysis, transmission electron microscopy, Transmission electron microscopy images, X ray photoelectron spectra, X ray photoelectron spectroscopy, X-ray photoelectron spectroscopy spectra

Abstract:

Nanofiber composites (Polyimide/f-SWCNT) of Pyromellitic dianhydride, 4,4'-Oxydianiline, and 4,4'- (4,4'-isopropylidene diphenyl-1,1'-diyl dioxy) dianiline (PMDA-ODA/IDDA) and surface-functionalized single walled carbon nanotubes (f-SWCNT) were made by electrospinning a solution of poly(amic acid) (PAA) containing 0-2 wt% f-SWCNT followed by thermal imidization. X-ray photoelectron spectroscopy spectra verified the oxidation of SWCNT surface after acid treatment, and indicated possible hydrogen bonding interactions between the f-SWCNTs and polyamic acid. High-resolution scanning electron microscopy images showed the average diameter of nanofibers to be below 150 nm, and transmission electron microscopy images showed that SWCNTs were aligned inside the polymer nanofiber. In thermogravimetric analysis, all composites showed increased thermal stability with increasing f-SWCNT content compared to neat PI. Storage modulus also increased from 124 MPa to 229 MPa from neat PI to 2% f-SWCNT composite. Copyright © 2014 American Scientific Publishers All rights reserved.

Notes:

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Cite this Research Publication

Ma Dhakshnamoorthy, Ramakrishnan, Sb, Vikram, Sa, Kothurkar, N. Kb, Rangarajan, Ma, and Vasanthakumari, Ra, “In-situ preparation and characterization of acid functionalized single walled carbon nanotubes with polyimide nanofibers”, Journal of Nanoscience and Nanotechnology, vol. 14, pp. 5011-5018, 2014.