High-Performance Bio-Based Polyurethane Antismudge Coatings Using Castor Oil-Based Hyperbranched Polyol as Superior Cross-Linkers

2021 ◽  
Author(s):  
Daidong Wei ◽  
Juanjuan Zeng ◽  
Qiwen Yong
Keyword(s):  
Castor Oil ◽  
High Performance

Comparative Study of Physico-Chemical Properties of Pure Polyurethane and Polyurethane Based on Castor Oil

2014 ◽  
Vol 983 ◽  
pp. 39-43
Author(s):  
M. A. Alaa ◽  
Kamal Yusoh ◽  
S.F. Hasany
Keyword(s):  
Castor Oil ◽  
High Performance ◽  
In Situ Polymerization ◽  
Chemical Properties ◽  
Strength Properties ◽  
Hydroxyl Group ◽  
Physico Chemical ◽  
Analysis Technique ◽  
Hydrophobic Nature ◽  
Poly Propylene

Petroleum based polyurethanes are contributing major portions in the world requirement. To overcome the environmental issues and price adaptability, there is always a massive demand of utilization of renewable resources for polyurethane synthesis with comparable physico-chemical properties. Castor oil is the only major natural vegetable oil that contains a hydroxyl group (-OH) and unsaturated double bonds (C=C) in its organic chain and therefore can be employed with or without modification due to the excellent properties derived from the hydrophobic nature of triglycerides. In this study, physico-chemical properties of high performance polyurethane synthesized from Poly propylene glycol (PPG) in comparison with a combination of PPG and Castor oil (a renewable source), by in situ polymerization technique has been studied. The variations in properties of both types of polyurethanes are evaluated by Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and Thermogravimetric analysis technique (TGA). Tensile strength properties were investigated by Film Tensile testing equipment. Results indicated the presence of large-CH stretching in castor oil mixed polyurethane with a larger oxidative thermal stability, over a pure PPG polyurethanes. Tensile properties were found almost comparable in pure and mixed polymers, which signify the usage of mixed polymer in coming future, to overcome the environmental and economical crisis in polyurethanes synthesis.

PREPARATION OF CHAIN EXTENDED POLYURETHANE AND ITS COMPOSITES BASED ON CASTOR OIL AND COIR FIBER

2015 ◽  
Vol 1 (01) ◽  
pp. 67-70
Author(s):  
A. Malar Retna
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Castor Oil ◽  
High Performance ◽  
Chain Extender ◽  
Coir Fiber ◽  
Percentage Elongation ◽  
Polyurethane Composites ◽  
Performance Character ◽  
Scanning Electron

The chain extended polyurethane was synthesized by reacting castor oil based polyol with 4,4’-methylenebis(cyclohexyl) isocyanate and chain extender such as malonic acid. The composites have been fabricated by incorporating the coir fiber into the neat polyurethane. The polyurethane and its composites were characterized with respect to their mechanical properties such as hardness, tensile strength, percentage elongation and Young’s modulus. The morphology of neat polyurethane and its composites with coir fiber was studied using scanning electron microscope (SEM). These studies revealed the high performance character of the polyurethane composites with respect to the corresponding neat polyurethane.

Synthesis of Biodiesel Using Castor Oil under Microwave Radiation

2011 ◽  
Vol 9 (1) ◽  
Author(s):  
Hong Yuan ◽  
Bolun Yang ◽  
Hailiang Zhang ◽  
Xiaowei Zhou
Keyword(s):  
Microwave Heating ◽  
Microwave Radiation ◽  
Castor Oil ◽  
High Performance ◽  
Radiation Power ◽  
Acid Methyl Ester ◽  
Conventional Heating ◽  
Molar Ratio ◽  
Heterogeneous Base Catalyst ◽  
Heterogeneous Base

The castor oil was adopted to synthesize biodiesel (Fatty Acid Methyl Ester, FAME) under microwave radiation. Acid catalysts (NaHSO4•H2O and AlCl3) and heterogeneous base catalyst (Na2CO3) were evaluated in the present study. The amounts of FAME in the product were analyzed by high performance liquid chromatography (HPLC). Experimental results show that the microwave radiation was an efficient method to enhance the reaction process. When the transesterification was carried out at 338 K, with 18:1 molar ratio of methanol to castor oil, 7.5wt% mass ratio of catalyst to castor oil, 200w microwave radiation power and 120 minutes reaction time, yields of 74, 73, 90% were obtained respectively using catalysts of NaHSO4•H2O, AlCl3 and Na2CO3. The energy consumed by microwave heating and conventional heating in transesterification were measured, and the results showed that the microwave heating consumed less energy than the conventional heating to achieve the same amount of FAME.

Tribological properties of castor oil tris(diphenyl phosphate) as a high-performance antiwear additive in lubricating greases for steel/steel contacts at elevated temperature

RSC Advances ◽  
2014 ◽  
Vol 4 (97) ◽  
pp. 54760-54768 ◽  
Author(s):  
Xinhu Wu ◽  
Qin Zhao ◽  
Ming Zhang ◽  
Weimin Li ◽  
Gaiqing Zhao ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Tribological Properties ◽  
Castor Oil ◽  
High Performance ◽  
Environmentally Friendly ◽  
Antiwear Additive ◽  
Diphenyl Phosphate

Castor oil tris(diphenyl phosphate) (CODP) was synthesized using an environmentally friendly resource – castor oil (CO), and its tribological properties were evaluated in lubricating greases at 150 °C.

scholarly journals Improved anti-arthritic activity of ginger extract, a traditional medicine, using novel drug delivery approach

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Vaishali Y. Londhe ◽  
Saloni M. Khogta ◽  
Kalyani H. Barve
Keyword(s):  
Traditional Medicine ◽  
Castor Oil ◽  
High Performance ◽  
Entrapment Efficiency ◽  
Nanostructured Lipid Carrier ◽  
Ginger Extract ◽  
Experimental Animals ◽  
Therapeutic Value ◽  
Novel Drug ◽  
Delivery Approach

AbstractBackgroundGinger and castor oil, both are used in traditional medicine to treat arthritis, the latter is also commonly used as a vehicle in these systems of medicine. The study was designed to prepare a nanostructured lipid carrier (NLC) of ginger extract using castor oil as a novel liquid lipid and evaluate its safety and efficacy in rheumatoid arthritis in experimental animals.MethodsGinger extract was standardized using High performance liquid chromatography (HPLC). The optimized NLC formulation was characterized and its therapeutic efficacy was evaluated in Chronic Freund's adjuvant (CFA) induced arthritis in experimental animals.ResultsGinger extract contained 38.76 ± 3.01%w/w of 6-gingerol. The optimized NLC formulation showed a particle size of around 205 nm, a zeta potential of −33.7 and %entrapment efficiency of 76.59 ± 0.83%. Reduction in primary inflammation was significantly higher with NLC when compared with ginger extract and castor oil alone (p<0.001). The formulation also improved hyperalgesia in rats.ConclusionCastor oil can be used as a novel lipid in the preparation of NLC. The NLC effectively enhanced the therapeutic value of poorly bioavailable ginger extract.

Application of Castor Oil-Based Cutting Fluids in Precision Turning

2011 ◽  
Vol 130-134 ◽  
pp. 3830-3834
Author(s):  
Hong Jie Pei ◽  
Y.J. Shen ◽  
Chun Gen Shen ◽  
Gui Cheng Wang
Keyword(s):  
Development Strategy ◽  
Castor Oil ◽  
High Performance ◽  
Chemical Properties ◽  
National Standards ◽  
Cutting Fluid ◽  
Price Ratio ◽  
Physical And Chemical ◽  
And Chemical Properties ◽  
Lubricating Properties

Green machining is a process that implements sustainable development strategy. In order to reduce cost and decrease environmental pollution in manufacturing process, a sort of biodegradable castor oil-based emulsion is developed, whose physical and chemical properties can correspond with the national standards. The cooling and lubricating properties of the emulsion are better while machining steel materials through comparative experiments with certain imported commodity synthetic cutting fluid. The emulsion can successfully substitute for commodity fluid because of its high performance-price ratio.

High-performance bio-based thermosetting resins composed of dehydrated castor oil and bismaleimide

2009 ◽  
Vol 114 (2) ◽  
pp. 1033-1039 ◽  
Author(s):  
Ken-Ichi Hirayama ◽  
Tomomi Irie ◽  
Naozumi Teramoto ◽  
Mitsuhiro Shibata
Keyword(s):  
Castor Oil ◽  
High Performance ◽  
Thermosetting Resins

The Effect of Content of Castor Oil on Two-Component Castor Oil Based Polyurethane Adhesive

2011 ◽  
Vol 311-313 ◽  
pp. 1128-1131
Author(s):  
Yan Qin ◽  
Jin Rong Jia ◽  
Zhi Xiong Huang
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Castor Oil ◽  
High Performance ◽  
Curing Agent ◽  
Polyurethane Adhesive ◽  
Adhesion Properties ◽  
Two Component ◽  
Thermal Stability Of

A new two-component polyurethane adhesive was prepared with castor oil used as main agent and castor oil modified TDI used as curing agent.The effect of castor oil on the mechanical properties, adhesion properties and thermal stability of this adhesive were studied.This paper show us that TDI could be used as curing agent after modification. When the NCO/OH in curing agent and main agent:curing agent were 1.6 and 3:5 respectively, high performance adhesive was obtained.

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