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Organoclay polypropylene nanocomposites under different electric field strengths

Rozynek, Zbigniew; de Lima Silva, Suedina Maria; Fossum, Jon Otto; da Silva, Geraldo Jose; de Azevedo, Eduardo Novais; Mauroy, Henrik and Plivelic, Tomás LU (2014) In Applied Clay Science 96. p.67-72
Abstract
Functionalities of clay-polymer nanocomposites (CPN) are related to the degree of clay particle exfoliation and orientation within the polymer matrix. Exploration of new physical methods for such CPN processing is currently an active field of research. In the present work, organoclay polypropylene nanocomposites were prepared by melt intercalation and subsequently exposed to an electric field (E) and studied in-situ by means of synchrotron X-ray scattering. Experiments were performed both at room temperature, and in the melted state (up to 200 degrees C) and during solidification (cooling down to room temperature). Structural changes and time evolution of the alignment of the layered silicates at different E-field strengths, as well as,... (More)
Functionalities of clay-polymer nanocomposites (CPN) are related to the degree of clay particle exfoliation and orientation within the polymer matrix. Exploration of new physical methods for such CPN processing is currently an active field of research. In the present work, organoclay polypropylene nanocomposites were prepared by melt intercalation and subsequently exposed to an electric field (E) and studied in-situ by means of synchrotron X-ray scattering. Experiments were performed both at room temperature, and in the melted state (up to 200 degrees C) and during solidification (cooling down to room temperature). Structural changes and time evolution of the alignment of the layered silicates at different E-field strengths, as well as, the final degree of their orientation is discussed. Despite many efforts, i.e. applying different E-field strengths, frequencies, and temperatures; E-field-induced clay particle exfoliation was not observed. The final state of the solidified sample is a semi-crystalline polymer matrix with embedded aligned clay particles having intercalated morphologies. E-field-assisted control of clay layers exfoliation in polymer matrices remains challenging. (C) 2014 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Clay mineral, Alignment, Polymer, Nanocomposite, Electric field, Exfoliation
in
Applied Clay Science
volume
96
pages
67 - 72
publisher
Elsevier
external identifiers
  • wos:000339537500010
  • scopus:84904052176
ISSN
1872-9053
DOI
10.1016/j.clay.2014.03.011
language
English
LU publication?
yes
id
6ce47b34-f357-4c87-9a05-bde3aa639636 (old id 4667874)
date added to LUP
2014-09-24 16:33:33
date last changed
2017-07-30 03:11:41
@article{6ce47b34-f357-4c87-9a05-bde3aa639636,
  abstract     = {Functionalities of clay-polymer nanocomposites (CPN) are related to the degree of clay particle exfoliation and orientation within the polymer matrix. Exploration of new physical methods for such CPN processing is currently an active field of research. In the present work, organoclay polypropylene nanocomposites were prepared by melt intercalation and subsequently exposed to an electric field (E) and studied in-situ by means of synchrotron X-ray scattering. Experiments were performed both at room temperature, and in the melted state (up to 200 degrees C) and during solidification (cooling down to room temperature). Structural changes and time evolution of the alignment of the layered silicates at different E-field strengths, as well as, the final degree of their orientation is discussed. Despite many efforts, i.e. applying different E-field strengths, frequencies, and temperatures; E-field-induced clay particle exfoliation was not observed. The final state of the solidified sample is a semi-crystalline polymer matrix with embedded aligned clay particles having intercalated morphologies. E-field-assisted control of clay layers exfoliation in polymer matrices remains challenging. (C) 2014 Elsevier B.V. All rights reserved.},
  author       = {Rozynek, Zbigniew and de Lima Silva, Suedina Maria and Fossum, Jon Otto and da Silva, Geraldo Jose and de Azevedo, Eduardo Novais and Mauroy, Henrik and Plivelic, Tomás},
  issn         = {1872-9053},
  keyword      = {Clay mineral,Alignment,Polymer,Nanocomposite,Electric field,Exfoliation},
  language     = {eng},
  pages        = {67--72},
  publisher    = {Elsevier},
  series       = {Applied Clay Science},
  title        = {Organoclay polypropylene nanocomposites under different electric field strengths},
  url          = {http://dx.doi.org/10.1016/j.clay.2014.03.011},
  volume       = {96},
  year         = {2014},
}