Determination of the surface area of smectite in water by ethylene oxide chain adsorption

Paul Cheng Yuang, Yun Hwei Shen

Research output: Contribution to journalArticle

22 Citations (Scopus)


This study investigates the feasibility of using ethylene oxide (EO) chain adsorption to determine the surface area of smectite in water. Experimental results indicate that high-molecular-weight poly(ethylene oxide) (PEO) should be used to provide reasonable estimations for monolayer capacity of PEO on smectite. The surface areas of smectites in water are calculated from the monolayer capacity of PEO adsorbed on smectite by taking the area per EO unit as 8.05 Å2. The method measures the actual surface area of smectite exposed when dispersed in water, which is important to applications of smectite under aqueous conditions.

Original languageEnglish
Pages (from-to)443-447
Number of pages5
JournalJournal of Colloid And Interface Science
Issue number2
Publication statusPublished - 2005 May 15


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

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