Interlayer charge conversion through intercalation of polycations into a synthetic swelling mica

Hideo Hata, Yoji Kobayashi, Thomas E. Mallouk

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In order to develop a layered host material that can intercalate anionic substances, low molecular weight (8500) poly(diallyldimethylammonium chloride) (PDDA) was intercalated into a synthetic sodium fluortetrasilisic mica (Na-TSM). PDDA could coil up and create free cationic sites within the interlayer galleries of the polysilicate. The degree of polymer coiling and excess cationic charge depended on the loading of the PDDA in the host solid. The conformational change of PDDA with increasing loading was supported by powder X-ray diffraction (XRD) data as well as by calculations of Gibbs adsorption free energy through fitting experimental adsorption isotherms, which implies three different stages of the adsorption. XRD patterns indicated that PDDA/Na-TSM intercalation compounds with high polymer loading have two different interlayer environments, in which PDDA chains are coiled and stretched, respectively. The surface layer charge conversion from anionic to cationic was also directly confirmed by zeta-potential measurements. In order to evaluate the anion accepting ability of the PDDANaTSM compounds, the intercalation of a bulky acidic blue dye into the cationic interlayer was studied. The acidic dye was site-selectively intercalated into the layers in which PDDA polycation coiled.

Original languageEnglish (US)
Title of host publicationSolid-State Chemistry of Inorganic Materials VI
PublisherMaterials Research Society
Pages212-217
Number of pages6
ISBN (Print)9781604234336
DOIs
StatePublished - 2006
Event2006 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 27 2006Dec 1 2006

Publication series

NameMaterials Research Society Symposium Proceedings
Volume988
ISSN (Print)0272-9172

Other

Other2006 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period11/27/0612/1/06

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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