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Effective sugar-derived organic gelator for three different types of lubricant oils to improve tribological performance

  • Ruochong Zhang
  • Xuqing Liu
  • Zhiguang Guo
  • Meirong CaiEmail author
  • Lei ShiEmail author
Open Access
Research Article


In this study, the gelling ability and lubrication performance of N-octadecyl-D-gluconamides (NOG) in liquid paraffin (LP), pentaerythritol oleate (PE-OA), and polyethylene glycol (PEG) oils were systemically investigated. The NOG, which could gelate the investigated oils, was successfully synthesized by a one-step method. The prepared gel lubricants were completely thermoreversible and exhibited improved thermal stability, according to the thermogravimetry analysis (TGA) reports. Rheological tests confirmed that the NOG gelator could effectively regulate the rheological behavior of the base oils. Tribological evaluation suggested that NOG, as an additive in the three types of base oils, could remarkably reduce the friction and wear in steel contacts. A plausible mechanism for the improved performances was proposed based on the mechanical strength of the gels and the formation of the boundary-lubricating film on the worn surface. The results indicated that NOG is a potential gelator for preparing gel lubricants with excellent tribological properties and environment-friendly characteristics.


gel lubricant supermolecular assembly rheological property tribological performance lubricating mechanism 



The authors are grateful for the financial support from the National Key R&D Program of China (No. 2018YFB0703802), National Natural Sdence Foundation of China (Nos. 51405477, 21972153, and 51675512), Youth Innovation Promotion Association of CAS (No. 2018454), and the Gansu province science and technology plan (No. 18ZD2WA011).

Supplementary material

40544_2019_316_MOESM1_ESM.pdf (701 kb)
Effective sugar-derived organic gelator for three different types of lubricant oils to improve tribological performance


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Authors and Affiliations

  1. 1.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhouChina
  2. 2.University of Chinese Academy of SciencesBeijingChina
  3. 3.School of MaterialsUniversity of ManchesterManchesterUK
  4. 4.Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Key Laboratory for the Green Preparation and Application of Functional Materials (Ministry of Education)Hubei UniversityWuhanChina

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