Titanate nanotubes and nanosheets as a mechanical reinforcement of water-soluble polyamic acid: experimental and theoretical studies
Titanate nanotubes and nanosheets as a mechanical reinforcement of water-soluble polyamic acid: experimental and theoretical studies
Titanate nanosheets (TiNS), titanate nanotubes (TiNT), and scrolled titanate nanosheets (STiNS) were used to synthesise polymer nanocomposites by solution processing. The hardness was found to increase by 90% on addition of 2% TiNS while the modulus (Er) increased by 103% compared to the pure polymer. Small angle X-ray scattering (SAXS) measurements of composite films were used to study alignment of nanostructures within the polymer. The obtained data on mechanical properties of composites have been tested against theoretical values and it was established that both nanostructures alignment as well as their mechanical properties affect the hardness and modulus of the polymer composites. At a low content of TiNS, the reinforcement behaviour matched well with Halpin-Tsai theory which assumes the filler has unidirectional orientation. After addition of 2 wt% TiNT, the hardness and modulus of the polyamic acid salt composites increased by 91% and 165%, respectively, and were higher than theoretical predictions, indicating that both TiNT and STiNS, prepared by hydrothermal synthesis, may have higher mechanical properties than bulk TiO2. At a high filler loading (>2 wt%), the mechanical properties of composites do not fit established theories due to agglomeration of titanate nanostructures.
Nanostructures, Poymer-matrix composites (PMCs), Mechanical Properties, Micro-mechanics
54-63
Harito, Christian
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Bavykin, Dmitry V.
1e9fabfc-d078-4585-876f-85ff33b7eed5
Light, Mark E.
cf57314e-6856-491b-a8d2-2dffc452e161
Walsh, Frank C.
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Harito, Christian
d146fa4e-fa33-40fc-b4b2-f4a77e0e75e6
Bavykin, Dmitry V.
1e9fabfc-d078-4585-876f-85ff33b7eed5
Light, Mark E.
cf57314e-6856-491b-a8d2-2dffc452e161
Walsh, Frank C.
309528e7-062e-439b-af40-9309bc91efb2
Harito, Christian, Bavykin, Dmitry V., Light, Mark E. and Walsh, Frank C.
(2017)
Titanate nanotubes and nanosheets as a mechanical reinforcement of water-soluble polyamic acid: experimental and theoretical studies.
Composites Part B: Engineering, 124, .
(doi:10.1016/j.compositesb.2017.05.051).
Abstract
Titanate nanosheets (TiNS), titanate nanotubes (TiNT), and scrolled titanate nanosheets (STiNS) were used to synthesise polymer nanocomposites by solution processing. The hardness was found to increase by 90% on addition of 2% TiNS while the modulus (Er) increased by 103% compared to the pure polymer. Small angle X-ray scattering (SAXS) measurements of composite films were used to study alignment of nanostructures within the polymer. The obtained data on mechanical properties of composites have been tested against theoretical values and it was established that both nanostructures alignment as well as their mechanical properties affect the hardness and modulus of the polymer composites. At a low content of TiNS, the reinforcement behaviour matched well with Halpin-Tsai theory which assumes the filler has unidirectional orientation. After addition of 2 wt% TiNT, the hardness and modulus of the polyamic acid salt composites increased by 91% and 165%, respectively, and were higher than theoretical predictions, indicating that both TiNT and STiNS, prepared by hydrothermal synthesis, may have higher mechanical properties than bulk TiO2. At a high filler loading (>2 wt%), the mechanical properties of composites do not fit established theories due to agglomeration of titanate nanostructures.
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More information
Accepted/In Press date: 13 May 2017
e-pub ahead of print date: 15 May 2017
Keywords:
Nanostructures, Poymer-matrix composites (PMCs), Mechanical Properties, Micro-mechanics
Organisations:
Characterisation and Analytics, Energy Technology Group, Southampton Marine & Maritime Institute, Education Hub
Identifiers
Local EPrints ID: 411266
URI: http://eprints.soton.ac.uk/id/eprint/411266
ISSN: 1359-8368
PURE UUID: 225b548b-bb26-4dea-8975-bad6e5de2bea
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Date deposited: 16 Jun 2017 16:31
Last modified: 16 Mar 2024 05:22
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Author:
Christian Harito
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