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Adsorption behavior of hexadecyltrimethylammonium bromide (CTAB) to mica substrates as observed by atomic force microscopy

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Abstract

Atomic force microscopy is employed to study the adsorption behavior of CTAB to mica surfaces. Results show that conformational transitions from globular micelles?→ cylindrical micelles?→ flat films are observed in the process of the adsorption of CTAB to mica at twice the bulk critical concentration. However, in 0.5 cmc CTAB solution, the adsorbed CTAB molecules to mica form the layered film structures, and apparent conformational transitions do not appear. Meanwhile, the phenomena of the adsorption of CTAB to mica and the dissociation of mica surfaces are periodically observed.

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Authors and Affiliations

  1. Chemistry and Chemical Engineering Department, Suzhou University, 215006, Suzhou, China

    Feng Zhao, Yukou Du & Ping Yang

  2. Key Laboratory of Colloid and Interface Science, Institute of Chemistry, Chinese Academy of Sciences, 100080, Beijing, China

    Feng Zhao, Xingchang Li & Ji’an Tang

Authors
  1. Feng Zhao
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  2. Yukou Du
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  3. Ping Yang
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  4. Xingchang Li
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  5. Ji’an Tang
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Correspondence to Ji’an Tang.

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Zhao, F., Du, Y., Yang, P. et al. Adsorption behavior of hexadecyltrimethylammonium bromide (CTAB) to mica substrates as observed by atomic force microscopy. Sc. China Ser. B-Chem. 48, 101–106 (2005). https://doi.org/10.1360/04yb0122

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  • DOI: https://doi.org/10.1360/04yb0122

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