Compositing polyetherimide with polyfluorene wrapped carbon nanotubes for enhanced interfacial interaction and conductivity
KAUST DepartmentAdvanced Membranes and Porous Materials Research Center
Smart Hybrid Materials (SHMs) lab
Physical Sciences and Engineering (PSE) Division
Chemical Science Program
Permanent link to this recordhttp://hdl.handle.net/10754/563608
MetadataShow full item record
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.
SponsorsThis 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.
PublisherAmerican Chemical Society (ACS)
- Dynamic synergy of graphitic nanoplatelets and multi-walled carbon nanotubes in polyetherimide nanocomposites.
- Authors: Kumar S, Sun LL, Caceres S, Li B, Wood W, Perugini A, Maguire RG, Zhong WH
- Issue date: 2010 Mar 12
- Surface Modification of Multiwalled Carbon Nanotubes with Cationic Conjugated Polyelectrolytes: Fundamental Interactions and Intercalation into Conductive Poly(methyl methacrylate) Composites.
- Authors: Ezzeddine A, Chen Z, Schanze KS, Khashab NM
- Issue date: 2015 Jun 17
- Polyetherimide/bucky gels nanocomposites with superior conductivity and thermal stability.
- Authors: Chen Y, Tao J, Deng L, Li L, Li J, Yang Y, Khashab NM
- Issue date: 2013 Aug 14
- Electrical and mechanical properties of poly(L-lactide)/carbon nanotubes/clay nanocomposites.
- Authors: Kim HS, Kwon HI, Kwon SM, Yun YS, Yoon JS, Jin HJ
- Issue date: 2010 May
- Incorporation of liquid-like multiwalled carbon nanotubes into an epoxy matrix by solvent-free processing.
- Authors: Yang YK, Yu LJ, Peng RG, Huang YL, He CE, Liu HY, Wang XB, Xie XL, Mai YW
- Issue date: 2012 Jun 8