Enzymatic Synthesis of a Polyol Ester from Levulinic Acid and Trimethylolpropane and Its Tribological Behavior as Potential Biolubricant Basestock
In this study, a polyol ester from levulinic acid (LA) and trimethylolpropane (TMP) was synthesized by enzymatic catalysis in a solvent-free system. The total conversion of TMP reached up to 84% on average after lipase recycling for five times. The produced ester showed excellent lubrication propert...
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MDPI AG
2020-10-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/12/10/2256 |
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| author | Wenyuan Zhu Fangyuan Liang Hewei Hou Yuting Chen Xiaohui Liu Xudong Zhu |
| author_facet | Wenyuan Zhu Fangyuan Liang Hewei Hou Yuting Chen Xiaohui Liu Xudong Zhu |
| author_sort | Wenyuan Zhu |
| collection | DOAJ |
| description | In this study, a polyol ester from levulinic acid (LA) and trimethylolpropane (TMP) was synthesized by enzymatic catalysis in a solvent-free system. The total conversion of TMP reached up to 84% on average after lipase recycling for five times. The produced ester showed excellent lubrication properties, such as high viscosities at 40 °C (86.53 mm<sup>2</sup>/s) and 100 °C (8.91 mm<sup>2</sup>/s), a good viscosity index (49), a low pour point (−27 °C), and a high flash point (223 °C). The frictional wear behavior was evaluated on a four-ball test machine (FTM) by adding the ester into a reference mineral oil. The blend with 10% ester showed a smaller wear scar diameter (WSD) (0.62 mm) when compared with that of pure mineral oil (0.78 mm). The results demonstrated that the obtained ester has huge potential as biolubricant basestock. |
| first_indexed | 2024-03-10T15:54:57Z |
| format | Article |
| id | doaj.art-652be7490f7d43dcbad90b6977ca0bb7 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T15:54:57Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-652be7490f7d43dcbad90b6977ca0bb72023-11-20T15:44:47ZengMDPI AGPolymers2073-43602020-10-011210225610.3390/polym12102256Enzymatic Synthesis of a Polyol Ester from Levulinic Acid and Trimethylolpropane and Its Tribological Behavior as Potential Biolubricant BasestockWenyuan Zhu0Fangyuan Liang1Hewei Hou2Yuting Chen3Xiaohui Liu4Xudong Zhu5Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, ChinaJiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, ChinaJiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, ChinaJiangsu Provincial Key Lab of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, ChinaSchool of Computer Science and Technology, Qilu University of Technology (Shandong Academy of Sciences), Jinan 300175, ChinaSchool of Light Industry Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 300175, ChinaIn this study, a polyol ester from levulinic acid (LA) and trimethylolpropane (TMP) was synthesized by enzymatic catalysis in a solvent-free system. The total conversion of TMP reached up to 84% on average after lipase recycling for five times. The produced ester showed excellent lubrication properties, such as high viscosities at 40 °C (86.53 mm<sup>2</sup>/s) and 100 °C (8.91 mm<sup>2</sup>/s), a good viscosity index (49), a low pour point (−27 °C), and a high flash point (223 °C). The frictional wear behavior was evaluated on a four-ball test machine (FTM) by adding the ester into a reference mineral oil. The blend with 10% ester showed a smaller wear scar diameter (WSD) (0.62 mm) when compared with that of pure mineral oil (0.78 mm). The results demonstrated that the obtained ester has huge potential as biolubricant basestock.https://www.mdpi.com/2073-4360/12/10/2256levulinic acidpolyol esterbiolubricanttribological behaviors |
| spellingShingle | Wenyuan Zhu Fangyuan Liang Hewei Hou Yuting Chen Xiaohui Liu Xudong Zhu Enzymatic Synthesis of a Polyol Ester from Levulinic Acid and Trimethylolpropane and Its Tribological Behavior as Potential Biolubricant Basestock Polymers levulinic acid polyol ester biolubricant tribological behaviors |
| title | Enzymatic Synthesis of a Polyol Ester from Levulinic Acid and Trimethylolpropane and Its Tribological Behavior as Potential Biolubricant Basestock |
| title_full | Enzymatic Synthesis of a Polyol Ester from Levulinic Acid and Trimethylolpropane and Its Tribological Behavior as Potential Biolubricant Basestock |
| title_fullStr | Enzymatic Synthesis of a Polyol Ester from Levulinic Acid and Trimethylolpropane and Its Tribological Behavior as Potential Biolubricant Basestock |
| title_full_unstemmed | Enzymatic Synthesis of a Polyol Ester from Levulinic Acid and Trimethylolpropane and Its Tribological Behavior as Potential Biolubricant Basestock |
| title_short | Enzymatic Synthesis of a Polyol Ester from Levulinic Acid and Trimethylolpropane and Its Tribological Behavior as Potential Biolubricant Basestock |
| title_sort | enzymatic synthesis of a polyol ester from levulinic acid and trimethylolpropane and its tribological behavior as potential biolubricant basestock |
| topic | levulinic acid polyol ester biolubricant tribological behaviors |
| url | https://www.mdpi.com/2073-4360/12/10/2256 |
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