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D. S. Ogunniyi

Bio: D. S. Ogunniyi is an academic researcher from University of Ilorin. The author has contributed to research in topics: Vegetable oil & Ultimate tensile strength. The author has an hindex of 3, co-authored 6 publications receiving 886 citations.

Papers
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Journal ArticleDOI
TL;DR: An awareness of the various uses of the oil can be used to make a strong case for an increase in its production as a vital raw material for the chemical industries.
Abstract: Even though castor oil is inedible, it has long been an article of commerce. This is, in large measure, due to the versatility of the oil. This article discusses the extraction of castor oil and its refining methods and reviews the industrial applications of the oil. Since castor oil is not edible, it could be substituted in many industrial application areas where edible oils are used. An awareness of the various uses of the oil can be used to make a strong case for an increase in its production as a vital raw material for the chemical industries.

926 citations

Journal ArticleDOI
TL;DR: The alkyd with the least oil content was the most rapid drying, most viscous and darkest in color in the formulation of white gloss paints.
Abstract: Four sets of alkyd resins modified by varying the percentage of tobacco seed oil (TSO) contents were prepared according to the alcoholysis-polyesterification process. The effect of oil contents on properties such as the drying performance, thickness of film, solubility, viscosity and color of the alkyd resins was evaluated. The alkyd with the least oil content was the most rapid drying, most viscous and darkest in color. Also, the prepared alkyds and the commercial alkyds were used separately in the formulation of white gloss paints and the properties of the alkyds were found to be comparable with commercial samples.

58 citations

Journal Article
TL;DR: In this article, the selective functionalization of (CH 2 =CH 8 Si 8 O 1 2 I by the addition of dichlorocarbene to vinyl double bonds giving (C 3 H 3 ) 8Si 8 OD 1 2, or (C 2 H 3 ), 4 (C3 H 3 Cl 2 ) 4 Si 8 OD 2, respectively, was described.
Abstract: Selective functionalization of (CH 2 =CH) 8 Si 8 O 1 2 I by the addition of dichlorocarbene to vinyl double bonds giving (C 3 H 3 ) 8 Si 8 O 1 2 or (C 2 H 3 ) 4 (C 3 H 3 Cl 2 ) 4 Si 8 O 1 2 3 respectively is described. The dichlorocarbene was generated from CHCl 3 in phase transfer catalytic system (PTC). Furthermore, (PhCH 2 CH 2 ) 8 Si 8 O 1 2 4 has been synthesized by Friedel-Crafts alkylation reaction of benzene with 1 using AlCl 3 as catalyst.

6 citations

Journal Article
TL;DR: In this article, the effect of MAO/Ti ratio on catalyst productivity was investigated and living nature of copolymer was maintained until the ratio reached 2000, where C-NMR and GPC have been used to characterize the copolymers.
Abstract: Propylene-co-ethylene polymer (Mn=528,000, Mw/Mn=1.19) was synthesized using [η 1 : η 3 -t-BuNSiMe2Flu]TiMe2 (Cat A)/methylaluminoxane (MAO) system at 0°C. Effect of MAO/Ti ratio on catalyst productivity was investigated and living nature of copolymer was maintained until the ratio reached 2000. 13 C-NMR and GPC have been used to characterize the copolymer.

1 citations


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Journal ArticleDOI
TL;DR: The use of non-edible plant oils is very significant because of the tremendous demand for edible oils as food source as mentioned in this paper, however, edible oils’ feedstock costs are far expensive to be used as fuel.
Abstract: World energy demand is expected to increase due to the expanding urbanization, better living standards and increasing population. At a time when society is becoming increasingly aware of the declining reserves of fossil fuels beside the environmental concerns, it has become apparent that biodiesel is destined to make a substantial contribution to the future energy demands of the domestic and industrial economies. There are different potential feedstocks for biodiesel production. Non-edible vegetable oils which are known as the second generation feedstocks can be considered as promising substitutions for traditional edible food crops for the production of biodiesel. The use of non-edible plant oils is very significant because of the tremendous demand for edible oils as food source. Moreover, edible oils’ feedstock costs are far expensive to be used as fuel. Therefore, production of biodiesel from non-edible oils is an effective way to overcome all the associated problems with edible oils. However, the potential of converting non-edible oil into biodiesel must be well examined. This is because physical and chemical properties of biodiesel produced from any feedstock must comply with the limits of ASTM and DIN EN specifications for biodiesel fuels. This paper introduces non-edible vegetable oils to be used as biodiesel feedstocks. Several aspects related to these feedstocks have been reviewed from various recent publications. These aspects include overview of non-edible oil resources, advantages of non-edible oils, problems in exploitation of non-edible oils, fatty acid composition profiles (FAC) of various non-edible oils, oil extraction techniques, technologies of biodiesel production from non-edible oils, biodiesel standards and characterization, properties and characteristic of non-edible biodiesel and engine performance and emission production. As a conclusion, it has been found that there is a huge chance to produce biodiesel from non-edible oil sources and therefore it can boost the future production of biodiesel.

1,017 citations

Journal ArticleDOI
TL;DR: The use of vegetable oils as renewable raw materials for the synthesis of various monomers and polymeric materials is reviewed in this article, where a variety of vegetable oil-based polymers have been prepared by free radical, cationic, olefin metathesis, and condensation polymerization.
Abstract: The use of vegetable oils as renewable raw materials for the synthesis of various monomers and polymeric materials is reviewed. Vegetable oils are generally considered to be the most important class of renewable resources, because of their ready availability and numerous applications. Recently, a variety of vegetable oil-based polymers have been prepared by free radical, cationic, olefin metathesis, and condensation polymerization. The polymers obtained display a wide range of thermophysical and mechanical properties from soft and flexible rubbers to hard and rigid plastics, which show promise as alternatives to petroleum-based plastics.

708 citations

Journal ArticleDOI
TL;DR: This review details two main routes to phosgene-free and isocyanate-free pathways to polyurethanes: the transurethanization and the cyclic carbonate/amine routes.
Abstract: Greener routes to polyurethanes are required and arouse a growing interest in the academic and industrial communities. To this purpose, the depletion of fossil resources exacerbates the need of renewable materials. This review details two main routes to phosgene-free and isocyanate-free pathways to polyurethanes: the transurethanization and the cyclic carbonate/amine routes. A focus is also made on bio-based synthons toward non-phosgene and non-isocyanate PUs.

455 citations

Journal ArticleDOI
TL;DR: This review describes several areas where plant oils can have a significant impact on the emerging bioeconomy and the types of fatty acids that are required in these various applications.
Abstract: The seed oils of domesticated oilseed crops are major agricultural commodities that are used primarily for nutritional applications, but in recent years there has been increasing use of these oils for production of biofuels and chemical feedstocks. This is being driven in part by the rapidly rising costs of petroleum, increased concern about the environmental impact of using fossil oil, and the need to develop renewable domestic sources of fuel and industrial raw materials. There is also a need to develop sustainable sources of nutritionally important fatty acids such as those that are typically derived from fish oil. Plant oils can provide renewable sources of high-value fatty acids for both the chemical and health-related industries. The value and application of an oil are determined largely by its fatty acid composition, and while most vegetable oils contain just five basic fatty acid structures, there is a rich diversity of fatty acids present in nature, many of which have potential usage in industry. In this review, we describe several areas where plant oils can have a significant impact on the emerging bioeconomy and the types of fatty acids that are required in these various applications. We also outline the current understanding of the underlying biochemical and molecular mechanisms of seed oil production, and the challenges and potential in translating this knowledge into the rational design and engineering of crop plants to produce high-value oils in plant seeds.

400 citations

Journal ArticleDOI
TL;DR: This Review focuses on the most recent advances made in the production of polyurethane materials from vegetable oils, from flexible foams to ductile and rigid plastics.
Abstract: Polyurethanes are among the most versatile polymers because of the wide range of monomers, particularly diols or polyols, that can be utilized in their synthesis. This Review focuses on the most recent advances made in the production of polyurethane materials from vegetable oils. Over the past several years, increasing attention has been given to the use of vegetable oils as feedstocks for polymeric materials, because they tend to be very inexpensive and available in large quantities. Using various procedures, a very broad range of polyols or diols and in some cases, poly- or diisocyanates, can be obtained from vegetable oils. The wide range of vegetable oil-based monomers leads to a wide variety of polyurethane materials, from flexible foams to ductile and rigid plastics. The thermal and mechanical properties of these vegetable oil-based polyurethanes are often comparable to or even better than those prepared from petroleum and are suitable for applications in various industries.

289 citations