Halloysite Reinforced Natural Esters for Energy Applications

Jaime Taha-Tijerina, Karla Aviña Camarena, Victoria Padilla-Gainza , Aditya Akundi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Recently, environmentally friendly and sustainable materials are being developed, searching for biocompatible and efficient materials which could be incorporated into diverse industries and fields. Natural esters are investigated and have emerged as eco-friendly high-performance alternatives to mineral fluids. This research shows the evaluations on thermal transport and tribological properties of halloysite nanotubular structures (HNS) reinforcing natural ester lubricant at various filler fractions (0.01, 0.05, and 0.10 wt.%). Nanolubricant tribotestings were evaluated under two configurations, block-on-ring, and 4-balls, to obtain the coefficient of friction (COF) and wear scar diameter (WSD), respectively. Results indicated improvements, even at merely 0.01 wt.% HNS concentration, where COF and WSD were reduced by ~66% and 8%, respectively, when compared to pure natural ester. The maximum significant improvement was observed for the 0.05 wt.% concentration, which resulted in a reduction of 87% in COF and 37% in WSD. Thermal conductivity was analyzed under a temperature scan from room temperature up to 70 °C (343 K). Results indicate that thermal conductivity is improved as the HNS concentration and testing temperature are increased. Results revealed improvements for the nanolubricants in the range of 8–16% at 50 °C (323 K) and reached a maximum of 30% at 70 °C (343 K). Therefore, this research suggests that natural ester/HNS lubricants might be used in industrial applications as green lubricants.

Original languageEnglish
Article number65
Pages (from-to)1
Number of pages12
Issue number2
Early online date5 Feb 2023
Publication statusPublished - Feb 2023

Bibliographical note

Publisher Copyright:
© 2023 by the authors.


Dive into the research topics of 'Halloysite Reinforced Natural Esters for Energy Applications'. Together they form a unique fingerprint.

Cite this