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Thermodynamic study on the adsorption and micelle formation of long chain alkyltrimethylammonium chlorides

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Abstract

The surface tension of aqueous solutions of tetradecyl-trimethylammonium chloride (TTAC) and decyltrimethylammonium chloride (DeTAC) were measured as a function of temperature at concentrations below and above the critical micelle concentration under atmospheric pressure. The entropy and energy of adsorption from the monomeric state and from the micellar state and also the entropy and energy of micelle formation for TTAC were evaluated and compared with those of dodecyltrimethyl-ammonium chloride (DTAC). The values of ΔM W s and ΔM W u for TTAC and DTAC systems show that the micelle formation is driven by the entropy at low temperatures and by the energy at high temperatures.

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Authors and Affiliations

  1. Department of Home Economics Chikushi Jogakuen Junior College Dazaifu Fukuoka 818-01 Japan E-mail: h79085g@wisdom.cc.kyushu-u.ac.jp, , , , , , JP

    Y. Hayami

  2. Department of Chemistry Faculty of Science Kyushu University 33 Fukuoka 812 Japan, , , , , , JP

    H. Ichikawa, A. Someya, M. Aratono & K. Motomura

Authors
  1. Y. Hayami
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  2. H. Ichikawa
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  3. A. Someya
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  4. M. Aratono
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  5. K. Motomura
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Received: 9 December 1997 Accepted: 4 March 1998

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Hayami, Y., Ichikawa, H., Someya, A. et al. Thermodynamic study on the adsorption and micelle formation of long chain alkyltrimethylammonium chlorides. Colloid Polym Sci 276, 595–600 (1998). https://doi.org/10.1007/s003960050286

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  • DOI: https://doi.org/10.1007/s003960050286

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