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The Development of a Fully Renewable Lubricant: The Effect of Ethyl Cellulose on the Properties of a Polyhydroxyalkanoate (P34HB)-Based Grease

Author

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  • Shanshan Yang

    (State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
    College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China)

  • Bingbing Lai

    (State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
    Qingdao Key Laboratory of Lubrication Technology for Advanced Equipment, Qingdao Center of Resource Chmesity & New Materials, Qingdao 266100, China)

  • Zongzhu Liu

    (College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China)

  • Wenjing Lou

    (State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
    Qingdao Key Laboratory of Lubrication Technology for Advanced Equipment, Qingdao Center of Resource Chmesity & New Materials, Qingdao 266100, China)

Abstract

In the context of the ongoing evolution of the global economy and increasing environmental awareness, green sustainable development has emerged as a crucial pathway for future advancements in the lubrication industry. In this study, we prepared bio-based greases by employing a thickener system consisting of polyhydroxyalkanoate (P34HB) and ethyl cellulose, with castor oil serving as a base oil. The results indicate that ethyl cellulose significantly and effectively enhances the grease system’s mechanical and colloidal stability. Notably, the addition of 5 wt% ethyl cellulose leads to superior mechanical and colloidal stability, while increasing concentrations gradually result in rheological properties similar to those of oleogels. Furthermore, the wear volume of grease containing 5 wt% ethyl cellulose was reduced by 39.20% compared to that of a reference P34HB grease, demonstrating its exceptional wear resistance. The present study provides a theoretical foundation and empirical evidence for the future development of biodegradable greases as substitutes for non-degradable materials, thereby expanding the range of environmentally friendly greases formulated with biomass-based thickeners.

Suggested Citation

  • Shanshan Yang & Bingbing Lai & Zongzhu Liu & Wenjing Lou, 2024. "The Development of a Fully Renewable Lubricant: The Effect of Ethyl Cellulose on the Properties of a Polyhydroxyalkanoate (P34HB)-Based Grease," Sustainability, MDPI, vol. 16(10), pages 1-17, May.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:10:p:4149-:d:1395293
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    References listed on IDEAS

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    1. Dao Zhou & Hongyu Wang & Shenglian Guo, 2021. "Preparation of Cellulose/Chitin Blend Materials and Influence of Their Properties on Sorption of Heavy Metals," Sustainability, MDPI, vol. 13(11), pages 1-11, June.
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