Compositing polyetherimide with polyfluorene wrapped carbon nanotubes for enhanced interfacial interaction and conductivity

Handle URI:
http://hdl.handle.net/10754/563608
Title:
Compositing polyetherimide with polyfluorene wrapped carbon nanotubes for enhanced interfacial interaction and conductivity
Authors:
Chen, Ye ( 0000-0002-6893-5094 ) ; Tao, Jing; Li, Song ( 0000-0003-4463-733X ) ; Khashab, Niveen M. ( 0000-0003-2728-0666 )
Abstract:
A novel approach to chemically functionalize multiwalled carbon nanotubes (MWCNTs) for making superior polyetherimide (PEI) nanocomposites with polyfluorene polymer is presented. In this approach, MWCNTs are non-covalently functionalized with poly(9,9-dioctyfluorenyl-2,7-diyl) (PFO) through π-π stacking as confirmed by UV-vis, fluorescence, and Raman spectra. Atomic force microscopy as well as scanning and transmission electron microscopy shows the PFO coated MWCNTs, which provides excellent dispersion of the latter in both solvent and PEI matrix. The strong interaction of PFO with PEI chains, as evidenced from fluorescence spectra, supports the good adhesion of dispersed MWCNTs to PEI leading to stronger interfacial interactions. As a result, the addition of as little as 0.25 wt % of modified MWCNTs to PEI matrix can strongly improve the mechanical properties of the composite (increase of 46% in storage modulus). Increasing the amount of MWCNTs to 2.0 wt % (0.5 wt % PFO loading) affords a great increase of 119% in storage modulus. Furthermore, a sharp decrease of 12 orders of magnitude in volume resistivity of PEI composite is obtained with only 0.5 wt % of PFO modified MWCNT. © 2014 American Chemical Society.
KAUST Department:
Advanced Membranes and Porous Materials Research Center; Smart Hybrid Materials (SHMs) lab; Physical Sciences and Engineering (PSE) Division; Chemical Science Program
Publisher:
American Chemical Society (ACS)
Journal:
ACS Applied Materials & Interfaces
Issue Date:
25-Jun-2014
DOI:
10.1021/am4054805
Type:
Article
ISSN:
19448244
Sponsors:
This work was supported by King Abdullah University of Science and Technology (KAUST), Saudi Aramco, SABIC Innovative Plastic Co., and King Abdulaziz City of Science and Technology (KACST). The authors are grateful to Dr. Yang Yang and Dr. Liang Li for their assistance in Raman and XRD analysis.
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center; Physical Sciences and Engineering (PSE) Division; Controlled Release and Delivery Laboratory; Chemical Science Program

Full metadata record

DC FieldValue Language
dc.contributor.authorChen, Yeen
dc.contributor.authorTao, Jingen
dc.contributor.authorLi, Songen
dc.contributor.authorKhashab, Niveen M.en
dc.date.accessioned2015-08-03T11:55:34Zen
dc.date.available2015-08-03T11:55:34Zen
dc.date.issued2014-06-25en
dc.identifier.issn19448244en
dc.identifier.doi10.1021/am4054805en
dc.identifier.urihttp://hdl.handle.net/10754/563608en
dc.description.abstractA novel approach to chemically functionalize multiwalled carbon nanotubes (MWCNTs) for making superior polyetherimide (PEI) nanocomposites with polyfluorene polymer is presented. In this approach, MWCNTs are non-covalently functionalized with poly(9,9-dioctyfluorenyl-2,7-diyl) (PFO) through π-π stacking as confirmed by UV-vis, fluorescence, and Raman spectra. Atomic force microscopy as well as scanning and transmission electron microscopy shows the PFO coated MWCNTs, which provides excellent dispersion of the latter in both solvent and PEI matrix. The strong interaction of PFO with PEI chains, as evidenced from fluorescence spectra, supports the good adhesion of dispersed MWCNTs to PEI leading to stronger interfacial interactions. As a result, the addition of as little as 0.25 wt % of modified MWCNTs to PEI matrix can strongly improve the mechanical properties of the composite (increase of 46% in storage modulus). Increasing the amount of MWCNTs to 2.0 wt % (0.5 wt % PFO loading) affords a great increase of 119% in storage modulus. Furthermore, a sharp decrease of 12 orders of magnitude in volume resistivity of PEI composite is obtained with only 0.5 wt % of PFO modified MWCNT. © 2014 American Chemical Society.en
dc.description.sponsorshipThis work was supported by King Abdullah University of Science and Technology (KAUST), Saudi Aramco, SABIC Innovative Plastic Co., and King Abdulaziz City of Science and Technology (KACST). The authors are grateful to Dr. Yang Yang and Dr. Liang Li for their assistance in Raman and XRD analysis.en
dc.publisherAmerican Chemical Society (ACS)en
dc.subjectconductivityen
dc.subjectinterfacial interactionen
dc.subjectmultiwalled carbon nanotubes (MWCNTs)en
dc.subjectpoly(9,9-dioctylfluorenyl-2,7-diyl) (PFO)en
dc.subjectpolyetherimide (PEI)en
dc.subjectuniform dispersionen
dc.titleCompositing polyetherimide with polyfluorene wrapped carbon nanotubes for enhanced interfacial interaction and conductivityen
dc.typeArticleen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.contributor.departmentSmart Hybrid Materials (SHMs) laben
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentChemical Science Programen
dc.identifier.journalACS Applied Materials & Interfacesen
kaust.authorChen, Yeen
kaust.authorTao, Jingen
kaust.authorLi, Songen
kaust.authorKhashab, Niveen M.en
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.