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Littérature scientifique sur le sujet « Seed oil polyol »

Auteur : Grafiati

Publié le 7 juin 2025

Mis à jour le 2 août 2025

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Articles de revues sur le sujet "Seed oil polyol"

Paciorek-Sadowska, Joanna, Marcin Borowicz, Bogusław Czupryński, Ewa Tomaszewska, and Joanna Liszkowska. "New bio-polyol based on white mustard seed oil for rigid PUR-PIR foams." Polish Journal of Chemical Technology 20, no. 2 (2018): 24–31. http://dx.doi.org/10.2478/pjct-2018-0019.

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AbstractA new bio-polyol based on white mustard oil (Synapis alba) and 2,2′-mercaptodiethanol (2,2′-MDE) was obtained. The synthesis was carried out by two-step method. In the first stage, the double bond of the unsaturated fatty acid residues was oxidized, and in the second step the epoxy rings were opened with 2,2’-MDE. The properties of the obtained bio-polyol for application as raw material in polyurethane-polyisocyanurate foams (PUR-PIR) - hydroxyl number, acid number, density, viscosity, pH, water content, FTIR,1H NMR and13C NMR were investigated. Based on the obtained results, foaming f

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Borowicz, Marcin, Joanna Paciorek-Sadowska, Jacek Lubczak, and Bogusław Czupryński. "Biodegradable, Flame-Retardant, and Bio-Based Rigid Polyurethane/Polyisocyanurate Foams for Thermal Insulation Application." Polymers 11, no. 11 (2019): 1816. http://dx.doi.org/10.3390/polym11111816.

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This article raised the issue of studies on the use of new bio-polyol based on white mustard seed oil and 2,2’-thiodiethanol (3-thiapentane-1,5-diol) for the synthesis of rigid polyurethane/polyisocyanurate (RPU/PIR) foams. For this purpose, new formulations of polyurethane materials were prepared. Formulations contained bio-polyol content from 0 to 0.4 chemical equivalents of hydroxyl groups. An industrial flame retardant, tri(2-chloro-1-methylethyl) phosphate (Antiblaze TCMP), was added to half of the formulations. Basic foaming process parameters and functional properties, such as apparent

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Sanda, Habib Abba, Muhammad Abbagoni Abubakar, Abdulhalim Musa Abubakar, Mamman Bashir, and Martin Stojchevski. "Utilization of Neem Seed Oil as Surfactant in the Production of Flexible and Rigid Polyurethane Foam." Emerging Technologies and Engineering Journal 1, no. 2 (2024): 40–52. http://dx.doi.org/10.53898/etej2024123.

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Extraction and processing of polyether polyols derived from petrochemicals, commonly used as surfactants during polyurethane foam (PUF) production, contribute to carbon emissions and raises the issue of long-term sustainability given that petrochemicals are non-renewable resources. Here, 5 mg and 4 mg of neem seed oil are employed to form flexible and rigid PUF, classified purposefully based on their divergent usage. To find an environmentally friendly replacement, flexible PUF whose mass, volume, density, compression, tensile strength, cream time, foam rise and rising time are 0.0047 kg m3, 1

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Chaochanchaikul, Kantima. "Influence of Natural Oil Polyol on Mechanical Properties of Polylactic Acid." Applied Mechanics and Materials 866 (June 2017): 208–11. http://dx.doi.org/10.4028/www.scientific.net/amm.866.208.

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The aim of this work was to improve the mechanical properties of polylactic acid (PLA) by natural oil polyol. Castor oil is natural oil polyol used for this work. It was directly extracted from castor seed and without chemical modification. The contents of castor oil were varied from 0 to 10 wt%. The effect of castor oil content on mechanical properties of PLA were evaluated by tensile and impact testings. Differential scanning calorimetry (DSC) and morphology analysis were used for explanation of the result. The result showed that the elongation at break and impact strength of PLA /10 wt% cas

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de, Haro Juan Carlos, JUAN F. RODRIGUEZ, Martínez Angel Pérez, and Franco Manuel Carmona. "Incorporation of azide groups into bio-polyols." Journal of Cleaner Production 138 (December 1, 2016): 77–82. https://doi.org/10.1016/j.jclepro.2016.05.012.

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The synthesis of polyols from renewable resources, primarily unsaturated vegetable oils, is increasing in importance in the polyurethane market. In this work, previously epoxidized grape seed oil was transformed into an azide-functionalized bio-polyol through a ringeopening reaction with sodium azide. The effectiveness of the ringeopening reaction was confirmed by analysing the depletion of the oxirane group content in the bulk mixture and by Fourier transform infrared spectroscopy (FT-IR). A pseudo-firstorder model was proposed for predicting the evolution of epoxide group

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Alshabebi, Ahmed S., Maher M. Alrashed, Lahssen El Blidi, and Sajjad Haider. "Preparation of Bio-Based Polyurethane Coating from Citrullus colocynthis Seed Oil: Characterization and Corrosion Performance." Polymers 16, no. 2 (2024): 214. http://dx.doi.org/10.3390/polym16020214.

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In this study, a new epoxidized oil from Citrullus colocynthis seed oil (CCSO) was obtained for a potential application in the formulation of polyurethane coatings. Initially, the fatty acid composition of CCSO was determined by gas chromatography–mass spectrometry (GC–MS). Subsequently, the epoxidation of CCSO was performed with in situ generated peracetic acid, which was formed with hydrogen peroxide (30 wt.%) and glacial acetic acid and catalyzed with sulfuric acid. The reaction was continued at a molar ratio of 1.50:1.0 of hydrogen peroxide to double bond (H2O2:DB) for 6 h at a controlled

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Hu, Yan Hong, Yun Gao, De Ning Wang, et al. "Rigid polyurethane foam prepared from a rape seed oil based polyol." Journal of Applied Polymer Science 84, no. 3 (2002): 591–97. http://dx.doi.org/10.1002/app.10311.

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Okoye, Sylvia Ijeoma, Abubakar Mohammed, and Sofeme Faiz Ndagana. "DEVELOPMENT OF POLYURETHANE FOAM USING BIOBASEDPOLYOL: EFFECT OF Ximenia americana SEED OIL POLYOL ON SOME PROPERTIES OF POLYURETHANE FOAM." FUW Trends in Science & Technology Journal 6, no. 2 (2021): 650–53. https://doi.org/10.5281/zenodo.15379192.

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Polyurethane foam (PUF) is used outstandingly for various applications, which is manufactured by propelling liquid isocyanate-polyol mixture to form foams with small proportions of silicon oil, stannuoesoctate, dimethyethylamine, methylene chloride and distilled water. In this study, PU foams were prepared using different levels biopolyol concentration, and the effects of biobasedpolyol level on the physico-chemical properties of the foams were investigated. Results from this research showed that biobasedpolyol level had important effects on physico-chemical properties of the biobased PU foams

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Kamarudin, Nurazreen Shazwin, Harumi Veny, Nailah Fasihah Sidek, Faisal Abnisa, Rozana Azrina Sazali, and Noorhaliza Aziz. "Investigation on Synthesis of Trimethylolpropane (TMP) Ester from Non-edible Oil." Bulletin of Chemical Reaction Engineering & Catalysis 15, no. 3 (2020): 808–17. http://dx.doi.org/10.9767/bcrec.15.3.8862.808-817.

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Trimethylolpropane (TMP) ester is an eco-friendly lubricant that fully biodegradable and known as bio lubricant. In this study, TMP ester was produced from waste cooking oil and rubber seed oil through a two-step synthesis approach. The reaction is two stages transesterifications, in which the waste cooking oil and the rubber seed oil were first transesterified with methanol to produce methyl ester, followed by transesterification with TMP using para-Toluenesulfonic acid (p-TSA) as catalyst. Various effects of operating conditions were observed, such as reaction time, temperature and molar rat

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Ahir, Mansi, Chandan Bodhak, and Ram K. Gupta. "Harnessing Enhanced Flame Retardancy in Rigid Polyurethane Composite Foams through Hemp Seed Oil-Derived Natural Fillers." Polymers 16, no. 11 (2024): 1584. http://dx.doi.org/10.3390/polym16111584.

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Over the past few decades, polymer composites have received significant interest and become protagonists due to their enhanced properties and wide range of applications. Herein, we examined the impact of filler and flame retardants in hemp seed oil-based rigid polyurethane foam (RPUF) composites’ performance. Firstly, the hemp seed oil (HSO) was converted to a corresponding epoxy analog, followed by a ring-opening reaction to synthesize hemp bio-polyols. The hemp polyol was then reacted with diisocyanate in the presence of commercial polyols and other foaming components to produce RPUF in a si

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Chapitres de livres sur le sujet "Seed oil polyol"

ZIMMERMANN, RAFAELA, DAIKELLY IGLESIAS BRAGHIROLLI, and PATRICIA PRANKE. "DEVELOPMENT OF NANOCAPSULES FOR THE TREATMENT OF SPINAL CORD INJURY." In Proceedings of the 2nd International Digital Congress on 3D Biofabrication and Bioprinting (3DBB) - Biofabrication, Bioprinting, Additive Manufacturing applied to health. Editora Realize, 2022. http://dx.doi.org/10.46943/ii.3dbb.2022.01.013.

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INTRODUCTION: SPINAL CORD INJURY (SCI) IS A SERIOUS DISEASE YET THERE IS NO TRULY SUCCESSFUL TREATMENT. IN THIS WORK, DIFFERENT OILS HAVE BEEN USED IN THE PREPARATION OF NANOCAPSULES (NCS), TO ENCAPSULATE THE NICOTINE FOR THE TREATMENT OF SCI AND COMPARE IT IN TERMS OF DIAMETER, POLYDISPERSITY INDEX (PDI), ZETA POTENTIAL, AND ENCAPSULATION EFFICIENCY (EE). METHODOLOGY: NCS WERE PREPARED USING POLY (LACTIC-CO-GLYCOLIC ACID) (PLGA) THROUGH THE TECHNIQUE OF INTERFACIAL POLYMER DEPOSITION. IN GROUP I, GRAPE SEED OIL WAS USED, IN GROUP II CASTOR OIL, IN GROUP III COPAIBA OIL, AND IN GROUP IV A?A? O

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Parashar, Rachit, and Dr Pooja Chaturvedi. "A STUDY ON THE GROWTH IN SYNTHETIC LUBRICANTS MARKET IN INDIA." In Futuristic Trends in Management Volume 2 Book 7. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2023. http://dx.doi.org/10.58532/v2bs7p1ch10.

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In engines and machinery, friction is controlled or reduced by lubricants. There are several types of Synthetic lubricants, including esters, Poly Alpha Olefin (PAO) and others. Synthetic lubricants are derived from Synthetic base oils, which can replace and differentiate mineral oil from crude oil. Lubricants derived from oily liquids are not directly derived from petroleum, but show similar characteristics to petroleum-based lubricants. By absorbing the heat generated by moving components of the vehicle and transferring it to the sump or cooler, these lubricants help control the temperature

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Auyero, Javier, and Débora Alejandra Swistun. "The Compound and the Neighborhood." In Flammable. Oxford University PressNew York, NY, 2009. http://dx.doi.org/10.1093/oso/9780195372946.003.0003.

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Abstract Flammable shantytown is located in the district of Avellaneda, right on the southeastern border of the city of Buenos Aires, adjacent to one of the largest petrochemical compounds in the country—Polo Petroquímico y Puerto Dock Sud. The Shell Oil refinery opened here in 1931. Since then, other companies have moved into the compound. At the time of this writing, Shell refinery is the most important plant in the Polo. There is another oil refinery (DAPSA), three plants that store oil and its derivatives (Petrobras, Repsol-YPF, and Petrolera Cono Sur), several plants that store chemical p

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Liu Zhen, Picken Stephen J., and Besseling Klaas (N.A.M.). "Self healing supramolecular nanocomposites." In Self Healing Materials. IOS Press, 2015. https://doi.org/10.3233/978-1-61499-514-2-11.

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We have designed, prepared, and characterized a class of advanced intrinsic self-healing polymer nanocomposites where the self-assembled filler skeleton formed by nanoparticles is embedded in a continuous phase of a supramolecular elastomer. In intrinsic self-healing systems the ability for a material to repair itself is achieved by keeping the required mobility in the system while using nanoparticle reinforcement to achieve the overall stiffness and resilience. This means that it is indeed possible to design a material that reconciles both mobility and stiffness, which at first sight might se

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Actes de conférences sur le sujet "Seed oil polyol"

Falope, Funmilola Y., Paul M. Osamudiamen, Oyinlola R. Obanla, Nathaniel Y. Illesami, and Adegboyega P. Adeoye. "Preparation and Characterisation of Rigid Polyurethane Foam from Terminalia catappa (Tropical Almond) seed oil-based polyol." In 2024 International Conference on Science, Engineering and Business for Driving Sustainable Development Goals (SEB4SDG). IEEE, 2024. http://dx.doi.org/10.1109/seb4sdg60871.2024.10630072.

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Erhan, Sevim Z., and Brajendra K. Sharma. "Development and Tribochemical Evaluation of Biobased Antiwear Additive." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81444.

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Seed oils are renewable resources, environmentally friendly non toxic fluids, pose no work place health hazards and are readily biodegradable. The amphiphilic character of these oils makes them an excellent candidate as lubricants and as specialty chemicals. Industrial application of seed oils is limited due to poor thermo-oxidative stability, poor low temperature fluidity, and other tribochemical degrading processes that occur under severe conditions of temperature, pressure, shear stress, metal surface and environment. This work describes the development and tribochemical evaluation of seed

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Prater, Walter L., Garvin J. Stone, Kevin W. Tierney, and Tom E. Karis. "Servo Performance of Actuator Bearing Greases." In ASME 1996 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/imece1996-1075.

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Abstract The hysteresis properties of a magnetic recording disk drive rotary actuator servo were measured for bearings lubricated with three different types of grease. The three types of grease tested were: 1) mineral oil with a polyurea thickener, 2) polyol ester oil with a polyurea thickener, and 3) perfluorinated polyether (PFPE) oil with a polytetrafluoroethelyne (PTFE) particle thickener. The grease dynamic viscosity and yield stress were measured to characterize the grease flow properties. Actuator bias current was measured on files to quantify changes in the hysteresis and linearity. He

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Xu, Hui, Zhiqing Su, Jun Jin, and Yingcheng Li. "Theoretical Study of Polymeric Surfactant with Multiple Types of Branched Ethylene/Propylene Oxide (EO/PO) Structure by DPD Simulation." In SPE Conference at Oman Petroleum & Energy Show. SPE, 2025. https://doi.org/10.2118/225153-ms.

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Abstract As a single chemical agent, polymeric surfactants (PolyS) play a dual role in increasing viscosity and reducing interfacial tension, which could effectively solve the problem of chromatographic separation of polymer-surfactant multi-component systems and improve oil displacement efficiency. Different molecular chain structures of PolyS with the same atomic composition, as well as different atomic compositions of active units in PolyS chains, will affect the performance of PolyS seriously. Due to the wide variety of theoretically feasible PolyS structures and unclear structure-property

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Ye, Jiping, Kenichi Ueoka, Makoto Kano, Yoshiteru Yasuda, Yusuke Okamoto, and Jean Michel Martin. "Super Low Friction Property of DLC Lubricated With Ester-Containing Oil: Part 2 — Nanometer-Scale Morphological, Structural and Frictional Properties." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63921.

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We have succeeded for the first time anywhere in lowering the friction coefficient of a diamond-like-carbon (DLC) coating to less than 0.01 under boundary lubrication in engine oil [1–3]. This anomalous super-lubrication behavior has been observed for a hydrogen-free DLC-coated (ta-C) disc in an ester-containing oil but not for a hydrogenated DLC (a-C:H) coating. It is thought that some chemical adsorbent may form only on the ta-C sliding surface due to some tribochemical reactions. Our recent studies have suggested that the macro-scale reduction of friction is dependent on nanometer-scale tri

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Merey, Sukru, Can Polat, and Tuna Eren. "Design of Horizontal Wellbore in Dadas Shales of Turkey by Considering Wellbore Stability and Reservoir Geomechanics." In SPE/IADC Middle East Drilling Technology Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/202183-ms.

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Abstract Currently, many horizontal wells are being drilled in Dadas shales of Turkey. Dadas shales have both oil (mostly) and gas potentials. Thus, hydraulic fracturing operations are being held to mobilize hydrocarbons. Up to 1000 m length horizontal wells are drilled for this purpose. However, there is not any study analyzing wellbore stability and reservoir geomechanics in the conditions of Dadas shales. In this study, the directions of horizontal wells, wellbore stability and reservoir geomechanics of Dadas shales were designed by using well log data. In this study, the python code develo

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Wylde, Jonathan J. "The Challenges Associated with Reaction Products Left in Scale Inhibitor Species after Radical Polymerization." In SPE International Oilfield Scale Conference and Exhibition. SPE, 2014. http://dx.doi.org/10.2118/spe-169778-ms.

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Abstract The use of polymeric scale inhibitors has been ubiquitously accepted by the oil and gas industry for many years. There are many benefits to the use of this type of chemistry that include aspects such as high performance, scale species selectivity, enhanced brine compatibility, favorable environmental properties and high thermal stability. A very common way to manufacture polymeric scale inhibitors is via free radical polymerization. Here an initiator is used to propagate the generation of free radicals from a species, such as hydrogen peroxide. The initiator chemistry can be very vari

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Alderei, M. H., L. H. KHEIDRI, A. S. Alkaabi, et al. "Utilize Joint Seismic VVAz-AVAz Inversion to Better Understand, Delineate and Develop Carbonate Reservoirs with Fractured Area in Middle East, Offshore Abu Dhabi." In ADIPEC. SPE, 2024. http://dx.doi.org/10.2118/222474-ms.

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Abstract Lower Cretaceous reservoirs are one of the main reservoirs in the UAE petroleum system. They are very well developed Onshore/Offshore where it is producing in different fields. In our Offshore field, the Lower Cretaceous reservoirs have always been considered as marginal reservoirs because of their low permeability. Hence historically, they have only been developed in the crestal part of the field where they are known to be fractured. In accordance with the ADNOC objective to reach oil production target by 2027. A specific development plan was set for this low permeability reservoir i

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