Deformation of "tunable" clay-polymer composites

Matthew D. Bishop, Sungho Kim, Angelica M. Palomino, Jong-Sub Lee

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Responsive clay-polymer composites are the next step in the development of polymer-modified clay materials. It has been shown at the micro-scale that these materials respond to the surrounding pore fluid environment, resulting in an alteration in fabric. The purpose of this study is to investigate the impact of the responsive nature of these materials on the consolidation properties. Two composite types were selected to highlight the differences based on modified interparticle and interparticle/interlayer spacings: one made from a kaolinite and one from a montmorillonite. Each composite was made with polyacrylamide as the polymer. The clay-polymer composites were subjected to 1-D consolidation tests during which shear wave velocity was also measured. The pH of the saturating fluid was varied to promote composite response. Results show that the compressibility, compression index, and swelling index of the composite materials are greater than the untreated clay materials. Furthermore, these properties are pH-dependent for both types of composite materials and are consistent with the long-term conformational behavior of PAM. This apparent observation confirms that the behavior of the clay-PAM composites is controlled by the behavior of PAM. On the other hand, the shear wave velocities between the control and composite samples were not significantly different.

Original languageEnglish
Pages (from-to)265-271
Number of pages7
JournalApplied Clay Science
Volume101
DOIs
Publication statusPublished - 2014 Nov 1

Fingerprint

Polymers
polymer
clay
Composite materials
Pulse amplitude modulation
Shear waves
Consolidation
wave velocity
consolidation
S-wave
Bentonite
Kaolin
Fluids
fluid
compressibility
Compressibility
montmorillonite
swelling
kaolinite
Swelling

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geology

Cite this

Deformation of "tunable" clay-polymer composites. / Bishop, Matthew D.; Kim, Sungho; Palomino, Angelica M.; Lee, Jong-Sub.

In: Applied Clay Science, Vol. 101, 01.11.2014, p. 265-271.

Research output: Contribution to journalArticle

Bishop, Matthew D. ; Kim, Sungho ; Palomino, Angelica M. ; Lee, Jong-Sub. / Deformation of "tunable" clay-polymer composites. In: Applied Clay Science. 2014 ; Vol. 101. pp. 265-271.
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