Electrospinning of in situ and ex situ synthesized polyimide composites reinforced by titanate nanotubes
Electrospinning of in situ and ex situ synthesized polyimide composites reinforced by titanate nanotubes
A colloidal dispersion of titanate nanotubes (TiNT) and polyamic acid (PAA) in dimethylformamide (DMF) was electrospun and chemically converted to polyimide (PI) - titanate nanotube (PI-TiNT) composite nanofibres of 500-1000nm diameter. The dispersion of nanotubes in the polymer was addressed by two different approaches, namely an in-situ method (when TiNT was coated with one of the monomers) and an ex-situ one (when TiNT reacted directly with PAA). SEM images showed bead formation on samples from the in-situ approach, while ex-situ samples showed the absence of such features. Good distribution and some alignment of TiNT within the polymer fibres from in-situ or ex-situ approaches were observed by TEM imaging. Addition of titanate nanotubes into the polyimide significantly decreased the viscosity of polyamic acid solution and increased the glass transition temperature of the composite.
nanoclay, composites, polymers
1-9
Harito, Christian
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Porras Ortigosa, Ruben
805bc8bc-b7ea-4091-80bd-49209bca0c53
Bavykin, Dmitry
1e9fabfc-d078-4585-876f-85ff33b7eed5
Walsh, Frank
309528e7-062e-439b-af40-9309bc91efb2
Harito, Christian
d146fa4e-fa33-40fc-b4b2-f4a77e0e75e6
Porras Ortigosa, Ruben
805bc8bc-b7ea-4091-80bd-49209bca0c53
Bavykin, Dmitry
1e9fabfc-d078-4585-876f-85ff33b7eed5
Walsh, Frank
309528e7-062e-439b-af40-9309bc91efb2
Harito, Christian, Porras Ortigosa, Ruben, Bavykin, Dmitry and Walsh, Frank
(2016)
Electrospinning of in situ and ex situ synthesized polyimide composites reinforced by titanate nanotubes.
Journal of Applied Polymer Science, .
(doi:10.1002/app.44641).
Abstract
A colloidal dispersion of titanate nanotubes (TiNT) and polyamic acid (PAA) in dimethylformamide (DMF) was electrospun and chemically converted to polyimide (PI) - titanate nanotube (PI-TiNT) composite nanofibres of 500-1000nm diameter. The dispersion of nanotubes in the polymer was addressed by two different approaches, namely an in-situ method (when TiNT was coated with one of the monomers) and an ex-situ one (when TiNT reacted directly with PAA). SEM images showed bead formation on samples from the in-situ approach, while ex-situ samples showed the absence of such features. Good distribution and some alignment of TiNT within the polymer fibres from in-situ or ex-situ approaches were observed by TEM imaging. Addition of titanate nanotubes into the polyimide significantly decreased the viscosity of polyamic acid solution and increased the glass transition temperature of the composite.
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More information
Accepted/In Press date: 7 November 2016
e-pub ahead of print date: 23 November 2016
Keywords:
nanoclay, composites, polymers
Organisations:
Engineering Mats & Surface Engineerg Gp, Energy Technology Group
Identifiers
Local EPrints ID: 403890
URI: http://eprints.soton.ac.uk/id/eprint/403890
ISSN: 0021-8995
PURE UUID: ecffcb6f-3c32-474d-bc7d-f7f36c154660
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Date deposited: 15 Dec 2016 11:59
Last modified: 15 Mar 2024 06:09
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Author:
Christian Harito
Author:
Ruben Porras Ortigosa
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