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Investigation of Aromatic/Aliphatic Polyimides as Dispersants for Single Wall Carbon NanotubesNovel aromatic/aliphatic polyimides were prepared from 2,7-diamino-9,9'- dioctylfluorene (AFDA) and aromatic dianhydrides. Upon investigating the effectiveness of these polyimides for dispersing single wall carbon nanotubes (SWNTs) in solution, three were discovered to disperse SWNTs in N,N-dimethylacetamide (DMAc). Two of these polyimides, one from 3,3',4,4'-oxydiphthalic anhydride (ODPA) and one from symmetric 3,3',4,4'-biphenyltetracarboxylic dianhydride (s-BPDA), were used to prepare nanocomposites. Homogeneous polyimide/SWNT suspensions from both polymers were used in the preparation of films and fibers containing up to 1 wt% SWNTs. The samples were thermally treated to remove residual solvent and the films were characterized for SWNT dispersion by optical and high resolution scanning electron microscopy (HRSEM). Electrical and mechanical properties of the films were also determined. Electrospun fibers were examined by HRSEM to characterize SWNT alignment and orientation.
Document ID
20080014338
Acquisition Source
Langley Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Delozier, Donavon M. (National Inst. of Aerospace Hampton, VA, United States)
Watson, Kent A. (National Inst. of Aerospace Hampton, VA, United States)
Smith, Joseph G., Jr. (NASA Langley Research Center Hampton, VA, United States)
Clancy, Thomas C. (National Inst. of Aerospace Hampton, VA, United States)
Connell, John W. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2006
Publication Information
Publication: Macromolecules
Volume: 39
Issue: 5
Subject Category
Nonmetallic Materials
Report/Patent Number
LAR-16874-1
Funding Number(s)
OTHER: 23-612-20-07-12
Distribution Limits
Public
Copyright
Public Use Permitted.

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