IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v17y2023i1p113-d1306887.html
   My bibliography  Save this article

Effect of an Amphoteric Surfactant Concentration on Absorbance, Contact Angle, Surfactant, and Thermal Conductivity of CNT Nanofluids

Author

Listed:
  • Seungyeop Baek

    (Graduate Program, Department of Energy & Mechanical Engineering, Gyeongsang National University, Tongyeong 53064, Republic of Korea)

  • Seunghyeon Lee

    (Graduate Program, Department of Energy & Mechanical Engineering, Gyeongsang National University, Tongyeong 53064, Republic of Korea)

  • Yonmo Sung

    (Department of Energy & Mechanical Engineering, Gyeongsang National University, Tongyeong 53064, Republic of Korea)

  • Dongmin Shin

    (Department of Energy & Mechanical Engineering, Gyeongsang National University, Tongyeong 53064, Republic of Korea)

  • Junhyo Kim

    (Department of Marine Engineering, Mokpo National Maritime University, Mokpo 58628, Republic of Korea)

  • Hyomin Jeong

    (Department of Energy & Mechanical Engineering, Gyeongsang National University, Tongyeong 53064, Republic of Korea)

Abstract

In this work, the effects of carbon nanotubes and an amphoteric surfactant, namely lauryl betaine, on the absorbance, contact angle, surface tension, and thermal conductivity of DW were experimentally investigated. The concentration of the carbon nanotubes was 0.5 wt% and that of lauryl betaine was 100, 500, and 1000 ppm in distilled water. From the absorbance measurement results, the addition of lauryl betaine could increase the absorbance in the wavelength range of UV and visible rays (200~1000 nm). In addition, the higher the surfactant concentration, the higher the dispersibility. The contact angle of the distilled water showed a monotonic decreasing trend with an increase in the surfactant blending ratio, while there were no significant changes in that of the carbon nanotube nanofluid. Analogous behaviors were observed in the surface tension measurements. The surface tension of the distilled water dramatically decreased with an increase in the surfactant blending ratio. The highest decrement was 46.05% at the surfactant concentration of 1000 ppm. In contrast, there were no significant changes in the case of the carbon nanotube nanofluid. Adding 0.5 wt% of the carbon nanotubes to distilled water could substantially enhance the thermal conductivity up to approximately 3%. The degradation effect of the amphoteric surfactant on the thermal conductivity of the fluids was observed in both distilled water and nanofluids.

Suggested Citation

  • Seungyeop Baek & Seunghyeon Lee & Yonmo Sung & Dongmin Shin & Junhyo Kim & Hyomin Jeong, 2023. "Effect of an Amphoteric Surfactant Concentration on Absorbance, Contact Angle, Surfactant, and Thermal Conductivity of CNT Nanofluids," Energies, MDPI, vol. 17(1), pages 1-12, December.
  • Handle: RePEc:gam:jeners:v:17:y:2023:i:1:p:113-:d:1306887
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/17/1/113/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/1996-1073/17/1/113/
    Download Restriction: no
    ---><---

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:17:y:2023:i:1:p:113-:d:1306887. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.