Volume 142, Issue 18 e56815
RESEARCH ARTICLE

Rheological and Thermal Behavior of Xanthan Gum Nanofluids Based on Hexagonal Boron Nitride Under High-Pressure and High-Temperature Conditions

Yago Chamoun F. Soares

Yago Chamoun F. Soares

Department of Mechanical Engineering, Pontificia Universidade Católica-RJ, Rio de Janeiro, Brazil

Contribution: Conceptualization (lead), Data curation (lead), Formal analysis (lead), ​Investigation (lead), Methodology (lead), Writing - original draft (lead), Writing - review & editing (equal)

Search for more papers by this author
Nathália Maria M. Fernandes

Nathália Maria M. Fernandes

School of Engineering, Mackenzie Presbyterian University, São Paulo, Brazil

MackGraphe–Mackenzie Institute for Research in Graphene and Nanotechnologies, Mackenzie Presbyterian Institute, São Paulo, Brazil

Contribution: Data curation (equal), Formal analysis (equal), ​Investigation (equal), Methodology (equal), Writing - original draft (equal), Writing - review & editing (equal)

Search for more papers by this author
Lara Schimith Berghe

Lara Schimith Berghe

Department of Mechanical Engineering, Pontificia Universidade Católica-RJ, Rio de Janeiro, Brazil

Contribution: Formal analysis (equal), ​Investigation (equal), Methodology (equal), Writing - review & editing (equal)

Search for more papers by this author
Lidiane Cristina Costa

Lidiane Cristina Costa

Graduate Program in Materials Science and Engineering, Federal University, São Carlos, Brazil

Department of Materials Engineering, Federal University, São Carlos, Brazil

Center of Characterization and Development of Materials (CCDM), Federal University, São Carlos, Brazil

Contribution: Formal analysis (equal), ​Investigation (equal), Methodology (equal), Writing - review & editing (equal)

Search for more papers by this author
Fernanda Alice de Credo

Fernanda Alice de Credo

Department of Materials Engineering, Federal University, São Carlos, Brazil

Contribution: Formal analysis (equal), ​Investigation (equal), Methodology (equal), Writing - review & editing (equal)

Search for more papers by this author
Hélio Ribeiro

Hélio Ribeiro

School of Engineering, Mackenzie Presbyterian University, São Paulo, Brazil

Contribution: Data curation (equal), Formal analysis (equal), ​Investigation (equal), Methodology (equal), Supervision (equal), Validation (equal), Writing - review & editing (equal)

Search for more papers by this author
Mônica Feijó Naccache

Corresponding Author

Mônica Feijó Naccache

Department of Mechanical Engineering, Pontificia Universidade Católica-RJ, Rio de Janeiro, Brazil

Correspondence:

Mônica Feijó Naccache ([email protected])

Ricardo Jorge E. Andrade ([email protected])

Contribution: Conceptualization (equal), Data curation (equal), Formal analysis (equal), Funding acquisition (equal), ​Investigation (equal), Methodology (equal), Project administration (equal), Resources (equal), Supervision (equal), Validation (equal), Writing - original draft (equal), Writing - review & editing (equal)

Search for more papers by this author
Ricardo Jorge E. Andrade

Corresponding Author

Ricardo Jorge E. Andrade

School of Engineering, Mackenzie Presbyterian University, São Paulo, Brazil

MackGraphe–Mackenzie Institute for Research in Graphene and Nanotechnologies, Mackenzie Presbyterian Institute, São Paulo, Brazil

Correspondence:

Mônica Feijó Naccache ([email protected])

Ricardo Jorge E. Andrade ([email protected])

Contribution: Conceptualization (equal), Data curation (equal), Formal analysis (equal), Funding acquisition (equal), ​Investigation (equal), Methodology (equal), Project administration (equal), Resources (equal), Supervision (equal), Validation (equal), Writing - original draft (equal), Writing - review & editing (equal)

Search for more papers by this author
First published: 08 February 2025
Citations: 2

Funding: This work was supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico, 305109/2022-7, 405665/2022-9, 406765/2022-7. Financiadora de Estudos e Projetos, 01.23.0483.00/REF. 0382/23.

ABSTRACT

Xanthan gum (XG) is a biopolymer widely used in different industries, such as food, cosmetics, oil, among others, which requires modifications in its properties. The present study aims to study the thermal and rheological properties of XG nanofluids based on oxidized hexagonal boron nitride (hBN-oxi) under high temperature and pressure conditions. The hBN-oxi was obtained through liquid exfoliation and then dispersed in the XG at different concentrations. The thermal conductivity of the nanofluids was investigated at different temperatures, and the addition of 6.0 wt% of hBN-oxi in the polymeric system increased thermal conductivity up to 12% at 70°C. The rheological behavior was obtained through steady-state and oscillatory flow measurements to evaluate the effect of hBN-oxi concentration under different temperatures and pressures. At higher concentrations, these nanostructures induced a yield stress in the fluid reaching a value of 12.8 Pa.s. Under high shear rates, the viscosity of the nanofluid decreased by only 16% at 80°C, indicating effective mitigation of temperature effect on viscosity. The pressure influence was also suppressed with the addition of these modified nanoparticles. This study highlights that well-designed formulations can significantly improve performance under extreme conditions.

Conflicts of Interest

The authors declare no conflicts of interest.

Data Availability Statement

The data that support the findings of this study are available on request from the corresponding author. The data are not publicly available due to privacy or ethical restrictions.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.