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vegetable oil-Based Nanolubricants in Machining:From Physicochemical Properties to Application

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Chinese Journal of Mechanical Engineering 2023年第4期36卷 4-42页

作者： Xiaotian Zhang Changhe Li Zongming Zhou Bo Liu Yanbin Zhang Min Yang Teng Gao Mingzheng Liu Naiqing Zhang Zafar Said Shubham Sharma Hafiz Muhammad Ali School of Mechanical and Automotive Engineering Qingdao University of TechnologyQingdao 266520China Hanergy(Qingdao)Lubrication Technology Co. Ltd.Qingdao 266200China Sichuan Future Aerospace Industry LLC. Shifang 618400China Shanghai Jinzhao Energy Saving Technology Co. Ltd.Shanghai 200436China Department of Sustainable and Renewable Energy Engineering University of Sharjah27272 SharjahUnited Arab Emirates Department of Mechanical Engineering and Advanced Materials Science Regional Center for Extension and DevelopmentCouncil of Scientific and Industrial Research(CSIR)-Central Leather Research Institute(CLRI)Jalandhar 144021India Mechanical Engineering Department King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia

Cutting fluid is crucial in ensuring surface quality and machining accuracy during machining.However,traditional mineral oil-based cutting fluids no longer meet modern machining’s health and environmental protection require-ments.As a renewable,pollution-free alternative with excellent processing characteristics,vegetable oil has become an inevitable replacement.However,vegetable oil lacks oxidation stability,extreme pressure,and antiwear proper-ties,which are essential for machining requirements.The physicochemical characteristics of vegetable oils and the improved methods’application mechanism are not fully understood.This study aims to investigate the effects of viscosity,surface tension,and molecular structure of vegetable oil on cooling and lubricating properties.The mechanisms of autoxidation and high-temperature oxidation based on the molecular structure of vegetable oil are also discussed.The study further investigates the application mechanism and performance of chemical modification and antioxidant additives.The study shows that the propionic ester of methyl hydroxy-oleate obtained by epoxidation has an initial oxidation temperature of 175℃.The application mechanism and extreme pressure performance of conventional extreme pressure additives and nanoparticle additives were also investigated to solve the problem of insufficient oxidation resistance and extreme pressure performance of nanobiological lubricants.Finally,the study discusses the future prospects of vegetable oil for chemical modification and nanoparticle addition.The study provides theoretical guidance and technical support for the industrial application and scientific research of vegetable oil in the field of lubrication and cooling.It is expected to promote sustainable development in the manufacturing industry.

关键词： Cutting fluid vegetable oil Chemical modification Antioxidant Extreme pressure additive Minimum quality lubrication

Topological network design toward high-performance vegetable oil-based elastomers

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SusMat 2023年第3期3卷 320-333页

作者： Shuangjian Yu Yeqing Li Siwu Wu Zhenghai Tang Liqun Zhang Baochun Guo Institute of Emergent Elastomers School of Materials Science and EngineeringSouth China University of TechnologyGuangzhouChina State Key Laboratory of Organic/Inorganic Composites Beijing University of Chemical TechnologyBeijingChina

As a kind of bio-derived feedstock,vegetable oil(VO)shows great potential to replace petroleum-based monomers to develop sustainable polymer materials because of its easy availability,low cost,bio-renewable,and environmentally friendly nature.However,due to the high cross-linking density and amorphous nature,directly cured VOs generally tend to be brittle and weak.To date,it is still difficult to adopt VOs and their derivatives as structural materials to prepare high-performance elastomers.To address this important issue,amulti-scale topology design strategy was proposed in this work.First,topology regulation and functionalization of VO-based networks were realized by managing functional groups proportion during the bulk polymerization of epoxidized soybean oil with dimer fatty acids.Furthermore,a second polymer(SN)network was introduced into the VO-based network as a protective layer via interfacial cross-links.The generated VO-based elastomers(VOEs)exhibit unprecedented comprehensive properties(VO content≥70 wt.%,T_(g)as low as−24.4℃,toughness up to 6.8 MJ/m^(3)).Besides,the VOEs also exhibit excellent reprocessability and self-healing capability.Overall,this work developed a novel kind of VOEs with significant comprehensive advantages and provided important inspiration for the preparation of high-performance elastomers throughmulti-scale topology regulation.

关键词： bio-based elastomer dual-network recycling topological network vegetable oil

Valorization of sustainable vegetable oil deodorizer distillate as a novel fatliquor

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Collagen and Leather

Collagen and Leather 2023年第3期5卷 60-72页

作者： El-Shahat H.A.Nashy Adel Gabr Abdel-Razek Minar Mahmoud M.Hassanein Ghada A.Abo-Elwafa Hamed Elsayed Chemical Industries Research Institute National Research CentreDokkiCairo 12622Egypt Department of Fats and oils National Research CentreDokkiCairo 12622Egypt

The deodorizer distillate(DD)is a byproduct of vegetable oil processing industry and is rich in functional bioactive components.This study aimed to employ phosphorylation modification for DD to produce a new sustainable fatliquor.The bioactive ingredients in DD,namely fatty acids,sterols,and tocopherols,were determined by using HPLC and GLC.The results revealed that the DD sample contained a high percentage of unsaturated fatty acids(72.3%)and high levels ofγandδ-tocopherols(54.8%and 31.60%,respectively).Mechanical parameters(tensile strength,elongation at break,and tear strength)of leather were improved after being treated with the prepared fatliquor emulsion.Eventually,SEM showed that the texture of the fatliquored leather had been remarkably enhanced.Moreover,the fatliquored leather possessed effective antibacterial effect against the specified+ve,-ve bacteria,and Candida albicans microorganisms.The strength,fullness,soft handle,and elasticity of leather were all improved,and the grain of leather was protected from becoming loose after drying.

关键词： vegetable oil Deodorizer distillate Bioactive components Fatliquor Phosphorylation Chrome tanned leather

A review:Health benefits and physicochemical characteristics of blended vegetable oils

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Grain & oil Science and Technology 2024年第2期7卷 113-123页

作者： Hina Daud Memon Sarfaraz Ahmed Mahesar Sirajuddin Huseyin Kara Syed Tufail Hussain Sherazi Mohammad Younis Talpur National Centre of Excellence in Analytical Chemistry University of SindhJamshoro 76080Pakistan International Center for Chemical and Biological Sciences HEJ Research Institute of ChemistryUniversity of KarachiKarachi 75270Pakistan Department of Chemistry Faculty of ScienceSelcuk UniversityKonya 42075Turkey Dr.M.A.Kazi Institute of Chemistry University of SindhJamshoro 76080Pakistan

oil blending is the method of choice used worldwide to improve oxidative stability and nutritional value.There is no such edible oil/fat that meets all the recommendations from the health point of view.The fatty acid composition of vegetable oils decides the fate of the oil.Pure single oil is unable to provide a balanced amount of fatty acids(FAs)required/recommended on a daily intake basis.Blending oils/fats is an appropriate procedure of physically mixing multiple oils in suitable proportions which may provide functional lipids with improved antioxidant potential and desirable physical and chemical properties.This review piled up the accessible data on the blending of diverse oils/fats in the combination of binary,ternary,quaternary,or other types of oils into a single blended oil.Blending can be found very convincing towards appropriate FA profile,enhancement in physicochemical characteristics,and augmented stability for the period of storage or when used as cooking/frying processes which could ultimately serve as an effectual dietary intervention towards the health protectiveness.

关键词： vegetable oil oil blending Physicochemical properties Nutritional benefits

Physicochemical Properties of the Seed oil of Khaya senegalensis

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Food and Nutrition Sciences 2024年第3期15卷 171-178页

作者： Abimbola O. Oginni Adewale Adewuyi Rotimi A. Oderinde Industrial Unit Chemistry Department University of Ibadan Ibadan Nigeria Department of Chemical Sciences College of Natural Sciences Redeemer’s University Ede Nigeria

The physicochemical characteristics of Khaya senegalensis seed oil were investigated. Iodine value, saponification value, percentage free fatty acid (FFA), acid value, and peroxide value were the chemical parameters examined in the oil analysis, while specific gravity and refractive index were examined as physical parameters. The results showed that the acid value was 1.18 ± 0.01, the saponification value was 191.76 ± 0.01 mgKOH/gm, and the iodine value was 102.79 ± 0.01. It contained 0.59 ± 0.01 percent free fatty acid. The value of peroxide was 6.83 ± 0.01 meq/kg. The results showed that the refractive index was 1.462 ± 0.02 and the specific gravity was 0.9194 ± 0.04. The established parameters fell within the worldwide and Nigerian vegetable oil industry standards.

关键词： Khaya senegalensis Physicochemical Parameters vegetable oil

Effects of vegetable oil residue after soil extraction on physical-chemical properties of sandy soil and plant growth

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Journal of Environmental Sciences 2008年第12期20卷 1458-1462页

作者： B.M.Wilke Kassem Alef Institute of Ecology Berlin University of Technology

vegetable oil has the ability to extract polycyclic aromatic hydrocarbons(PAHs)from contaminated sandy soil for a remediation purpose,with some of the oil remaining in the soil.Although most of the PAHs were removed,the risk of residue oil in the soil was not known.The objective of this study was to evaluate the effects of the vegetable oil residue on higher plant growth and sandy soil properties after soil extraction for a better understanding of the soil remediation.Addition of sunflower oil and column ex...

关键词： soil vegetable oil plant growth organic carbon pH

Environmental and economic assessment of vegetable oil production using membrane separation and vapor recompression

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Frontiers of Chemical Science and Engineering 2017年第2期11卷 166-176页

作者： Weibin Kong Qi Miao Peiyong Qin Jan Baeyens Tianwei Tan Beijing Key Lab of Bioprocess College of Life Science and Technology Beijing University of Chemical Technology Beijing 100029 China School of Engineering University of Warwick Coventry CV4 7AL UK

Solvent extraction of crude oil from oilseeds is widely applied for its high production capacity and low cost. In this process, solvent recovery and tail gas treatment are usually performed by adsorption, paraffin scrubbing, or even cryogenics （at low tail gas flow rates）. Membrane separation, which has a lower energy consumption than these techniques, spans a broad range of admissible concentrations and flow rates, and is moreover easily combined with other techniques. Vapor recompression has potentials to reduce the heat loss in association with distillation and evaporation. In this study, we proved the possibility of combining membrane separation and vapor recompression to improve the conventional vegetable oil production, by both experiments and process simulation. Nearly 73% of energy can be saved in the process of vegetable oil extraction by the novel processing approach. By further environmental assessment, several impact categories show that the optimized process is environmentally sustainable.

关键词： vegetable oil solvent-extraction membrane separation vapor recompression environmental and economic assessment

Penetration and lubrication evaluation of vegetable oil with nanographite particles for broaching process

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Friction 2021年第6期9卷 1406-1419页

作者： Ming XU Xin YU Jing NI School of Mechanical Engineering Hangzhou Dianzi UniversityHangzhou 310018China

With increasing environmental concerns,the substitution of mineral oil-based cutting fluid has become an urgent issue.Using vegetable soybean oil as base fluid,nanofluid cutting fluids(NFCFs)were prepared by adding different weight concentrations of nanographite particles(NGPs),and their penetration and lubrication performances were studied.A novel simulated tool-chip slit with micrometersized geometry was manufactured to evaluate and quantify the penetration rate of the NFCFs by image analysis approach.Moreover,a large number of comparative experiments on the closed-type broaching machine were carried out to compare the performance of the proposed NFCFs and a commercial cutting fluid in terms of cutting force,workpiece surface roughness,and metal chip.It is found that there is an optimal NGP concentration in NFCF for practical cutting applications.When the concentration of NGP is 0.4 wt%,the broaching process lubrication exhibits an ideal mixed lubricate state,resulting in minimal friction resistance,and thus,both the cutting force and chip curling angle reach their corresponding best values.Moreover,the proposed NGP-based vegetable-oil cutting fluid exhibits excellent environmentfriendliness and low-cost consumption in the minimal quantity lubrication(MQL)method;this demonstrates its potential for replacing the traditional broaching cutting fluid.

关键词： cutting fluid vegetable oil nano-graphite particle penetration broaching

Utilization of TiO_(2)/gC_(3)N_(4)nanoadditive to boost oxidative properties of vegetable oil for tribological application

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Friction 2021年第2期9卷 273-287页

作者： Nisha RANJAN Rashmi C.SHENDE Muthusamy KAMARAJ Sundara RAMAPRABHU Department of Physics Indian Institute of Technology MadrasChennai 600036India Department of Metallurgical and Materials Engineering Indian Institute of Technology MadrasChennai 600036India

The emergence of vegetable oil as a promising alternative lubricant in the tribological application space has fueled research for making these oils as useful as mineral oils.Tribological modification of vegetable oil by the addition of TiO_(2)/gC_(3)N_(4)nanocomposite(as a nanoadditive)was studied here.The dispersion of the nanoadditive in the vegetable oil showed good oil dispersion stability without the addition of any surfactant.The tribological studies were conducted in a four-ball tester using ASTM standard D5183.In addition,the effect of temperature on tribological performance was also studied to understand the oxidation behavior of vegetable oil.The results showed a significant improvement in friction and wear properties of the optimized nano-oil.The mechanism behind the improvement in friction and wear properties is annotated in this paper.

关键词： TiO_(2)/gC_(3)N_(4)nanoadditive vegetable oil oxidation