The intercalation of β-carotene into the organophilic interlayer space of dialkyldimethylammonium-montmorillonites

Norishige Kakegawa, Makoto Ogawa*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)


The intercalation of β-carotene into the hydrophobic interlayer spaces of montmorillonite modified with dialkyldimethylammonium cations was investigated. The organophilic montmorillonites were dispersed in a chloroform solution of β-carotene and the suspensions were casted on transparent substrates to prepare oriented films. The XRD patterns of the products showed successful intercalation of β-carotene into the interlayer spaces of the organophilic montmorillonites. The visible absorption spectra of the products revealed that the adsorbed β-carotene molecules exist as monomeric species, even when the added amounts of β-carotene were very high. Photodegradation of β-carotene molecules was suppressed by the intercalation.

Original languageEnglish
Pages (from-to)137-144
Number of pages8
JournalApplied Clay Science
Issue number3
Publication statusPublished - 2002 Dec


  • β-carotene
  • Intercalation
  • Montmorillonite
  • Nanocomposite
  • Organophilic clay

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geology


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