Chemical Modification of Vegetable Oils for Lubricant Basestocks

2003 ◽  
Author(s):  
S. Z. Erhan ◽  
A. Adhvaryu ◽  
Z. Liu
Keyword(s):  
Low Temperature ◽  
Environmental Impact ◽  
Chemical Modification ◽  
Oxidative Stability ◽  
Functional Properties ◽  
Vegetable Oil ◽  
Vegetable Oils ◽  
Renewable Sources ◽  
Oil Derivatives ◽  
Mineral Base

Use of vegetable oil based lubricants will reduce petroleum imports and have a favorable environmental impact. The vegetable oils are derived from a renewable sources, biodegradable, non-toxic, possess high flash points and have low volatility. Inadequate oxidative stability and poor low-temperature properties of vegetable oils limit their utilization as lubricants. In this study, we report the development of chemical modification methods to improve these functional properties. The resultant vegetable oil derivatives having diester substitution at the sites of unsaturation shows comparable properties to mineral base fluids.

Enhancement of Thermo-Oxidative Stability of Vegetable Oil Based Lubricant via Chemical Modification Techniques

2015 ◽  
Vol 813-814 ◽  
pp. 695-699
Author(s):  
S. Arumugam ◽  
G. Sriram ◽  
A. Hemanth Sai Kumar Chowdary ◽  
Janga Subramanya Sai
Keyword(s):  
Chemical Modification ◽  
Oxidative Stability ◽  
Vegetable Oils ◽  
Rapeseed Oil ◽  
Chemical Structure ◽  
Thermo Gravimetric Analysis ◽  
Gravimetric Analysis ◽  
Thermo Gravimetric ◽  
Transesterification Method ◽  
Unique Chemical

The rising demand for environmentally acceptable lubricant has led researchers to look to vegetable oils as an alternative to petroleum based lubricants. Vegetable oils have radically distinctive properties owing to their unique chemical structure which have greater ability to lubricate and have higher biodegradability. In spite of advantages, they are limited to inadequate thermo-oxidative stability and poor low-temperature properties which hinder their utilization. In the present study in order to produce a bio lubricant with good thermo-oxidative stability, rapeseed oil was subjected to two different chemical modification techniques viz., epoxidation method and successive transesterification method. The thermo-oxidative stability of formulated oil was analysed using Thermo Gravimetric Analysis (TGA). TGA analysis divulges that the thermo-oxidative stability of rapeseed oil was greatly improved with the epoxidation method in comparison with the successive transesterification method.

Biodegradable Lubricant from Idesia polycarpa Maxim. var. vestita Diels Oil

2012 ◽  
Vol 512-515 ◽  
pp. 506-509
Author(s):  
Quan Yi Wang ◽  
Yan Wang ◽  
Shun Yao ◽  
Hang Song
Keyword(s):  
Low Temperature ◽  
Oxidative Stability ◽  
Vegetable Oils ◽  
Ring Opening ◽  
Pour Point ◽  
Viscosity Index ◽  
Dioctyl Phthalate ◽  
Temperature Performance ◽  
Wide Range ◽  
Biodegradable Lubricant

The chemical modified Idesia polycarpa Maxim. var. vestita Diels (IPMVVD) oil as a biodegradable lubricant was described in the paper. IPMVVD oil was modified by epoxidation and reaction of ring opening to resolve poor oxidative stability and low-temperature fluidity when vegetable oils as lubricants directly. The effects of the parameters in the process were studied, and then the product was evaluated. The results showed that the modified IPMVVD oil had higher viscosity index and superior oxidative stability comparing with unmodified oil; its mixtures with Dioctyl phthalate (DOP) offered a wide range of kinematic viscosities and lower pour point (-22°C), displayed preferable low temperature performance.

scholarly journals Eco-Friendly Production of AuNPs and Their Impact on the Oil Oxidative Stability

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1668
Author(s):  
Flávio S. Michels ◽  
Pablo J. Gonçalves ◽  
Valter A. Nascimento ◽  
Samuel L. Oliveira ◽  
Heberton Wender ◽  
...  
Keyword(s):  
Oxidative Stability ◽  
Vegetable Oil ◽  
Vegetable Oils ◽  
Sunflower Oil ◽  
Inductively Coupled Plasma ◽  
Deposition Time ◽  
Optical Emission ◽  
Oil Well ◽  
Sputtering Deposition ◽  
Inductively Coupled

Vegetable oils have been used for different applications and, more recently, as an active host medium to obtain nanoparticles for employment in bionanotechnological applications. Nevertheless, oils are very susceptible to oxidation during production, storage, and transportation because of their chemical composition. Consequently, any modification in their production must be accompanied by an analysis of the oxidative stability. In this study, naked and biocompatible gold nanoparticles (AuNPs) were grown on sunflower oil during sputtering deposition using different deposition times. Size and morphology were determined by transmission electron microscopy (TEM) and their concentrations were found by inductively coupled plasma-optical emission spectroscopy (ICP-OES). Rancimat® method was employed to evaluate the AuNPs influence on the oxidative stability of the vegetable oil. Well-dispersed quasi-spherical NPs were produced with a mean diameter in the 2.9–3.7 nm range and they were concentration-dependent on the deposition time. A concentration of about 11 mg/L, 38 mg/L, and 225 mg/L of AuNPs was obtained for a deposition time of 5 min, 15 min, and 30 min, respectively. The results also revealed that AuNPs negatively affected the oxidative stability of the sunflower oil and exponentially reduced the induction period (IP) with the increase in AuNPs content. IP reductions of 63%, 77%, and 81% were determined for the AuNPs containing samples at 11 mg/L, 38 mg/L, and 225 mg/L. For the first time, it is reported that naked AuNPs promote the rapid degradation of vegetable oil and this points out the need for attention relative to the quality of vegetable oils used to host metal nanoparticles.

scholarly journals Modification of olefinic double bonds of unsaturated fatty acids and other vegetable oil derivatives via epoxidation: A review

2017 ◽  
Vol 68 (1) ◽  
pp. 174 ◽  
Author(s):  
A. H. Noor Armylisas ◽  
M. F. Siti Hazirah ◽  
S. K. Yeong ◽  
A. H. Hazimah
Keyword(s):  
Fatty Acids ◽  
Vegetable Oil ◽  
Vegetable Oils ◽  
Unsaturated Fatty Acids ◽  
Environmentally Friendly ◽  
Industrial Applications ◽  
Oil Derivatives ◽  
Review Reports ◽  
Synthetic Approaches ◽  
Highly Strained

The highly strained ring in epoxides makes these compounds very versatile intermediates. Epoxidized vegetable oils are gaining a lot of attention as renewable and environmentally friendly feedstock with various industrial applications such as plasticizers, lubricant base oils, surfactants, etc. Numerous papers have been published on the development of the epoxidation methods and the number is still growing. This review reports the synthetic approaches and applications of epoxidized vegetable oils.

LOCATION OF OILSEED PRODUCTION IN TERMS OF VEGETABLE OIL EXPORT

2020 ◽  
Vol 1 (10) ◽  
pp. 94-100
Author(s):  
Yu. V. RAGULINA ◽  
Keyword(s):  
Seed Production ◽  
Vegetable Oil ◽  
Vegetable Oils ◽  
Sunflower Oil ◽  
World Export ◽  
Oil Export ◽  
Oilseed Production

The article is devoted to the issues of placing seed production in the conditions of world export of vegetable oils. In 2019, the volume of Russian exports of sunflower oil exceeded 3 million tons for a total of $ 2,2 billion, which is about 30% of the vegetable oil produced in the country. In Russia, the main oilseeds are sunflower, rapeseed, and soy. Less common crops include oilseed flax, ginger, mustard, and safflower. It is stated that in 2001–2019, the acreage of all types of oilseeds in the country increased by more than 2 times, and the gross harvest – by 3,3 times, while the yield increased by 1,4 times.

Oxidative Stability, Physicochemical, and Sensory Characteristics of Vegetable Oils at Their Induction Periods

2019 ◽  
Vol 48 (6) ◽  
pp. 649-660
Author(s):  
Mi So Kim ◽  
Da-Som Kim ◽  
Jin-Ju Cho ◽  
Seong Jun Hong ◽  
Chang Guk Boo ◽  
...  
Keyword(s):  
Oxidative Stability ◽  
Vegetable Oils ◽  
Sensory Characteristics ◽  
Induction Periods

scholarly journals Co-encapsulation of vegetable oils with phenolic antioxidants and evaluation of their oxidative stability under long-term storage conditions

LWT ◽  
2021 ◽  
Vol 142 ◽  
pp. 111033
Author(s):  
Lorine Le Priol ◽  
Justine Gmur ◽  
Aurélien Dagmey ◽  
Sandrine Morandat ◽  
Karim El Kirat ◽  
...  
Keyword(s):  
Oxidative Stability ◽  
Vegetable Oils ◽  
Storage Conditions ◽  
Phenolic Antioxidants ◽  
Long Term Storage ◽  
Term Storage
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