Rubber Seed Oil-Based Polyurethane Composites, Fabrication and Properties Evaluation

2007 ◽  
Vol 18-19 ◽  
pp. 233-239 ◽  
Author(s):  
F.E. Okieimen ◽  
I.O. Bakare
Keyword(s):  
Thermal Stability ◽  
Seed Oil ◽  
Scanning Electron Micrographs ◽  
Compression Moulding ◽  
Rubber Seed Oil ◽  
Rubber Seed ◽  
Pull Out ◽  
Polyurethane Composites ◽  
Thermal Stability Of ◽  
Fractured Surface

Polyurethane samples were prepared from rubber seed oil monoglyceride (made by reacting rubber oil with glycerol) and diiosocyanates (hexanethylene and toluene diiosocyanates). Polyurethane composites were made by compression moulding using biofibres; sisal, jute and banana; in random and unidirectional orientations at different fibre lengths and loadings, as reinforcing elements. The composites were characterized in terms of tensile and flexural strengths and moduli, thermal stability and morphology of fractured surface. The values of the measured mechanical properties (tensile and flexural) of the composites were about 3-fold higher than the properties of the unreinforced polyurethane samples, suggesting good reinforcement by the biofibres. The absence of fibre-pull-out on the scanning electron micrographs of the fractured surface provides evidence in support of good adhesion between the biofibres and the polyurethane matrix. The thermal stability of the composites was lower than for the fibre but higher than for the unreinforced polyurethane.

scholarly journals The Epoxidized Vietnam Rubber Seed Oil as a Secondary Plasticizer/Thermal Stabilizer in PVC Processing

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Nguyen Thi Thuy ◽  
Vu Minh Duc ◽  
Nguyen Thanh Liem
Keyword(s):  
Thermal Stability ◽  
Seed Oil ◽  
Sample Weight ◽  
Rubber Seed Oil ◽  
Rubber Seed ◽  
Plasticized Pvc ◽  
Secondary Plasticizer ◽  
Positive Effect ◽  
Thermal Stability Of

The epoxidized rubber seed oil (EeRSO) was a mixture of epoxidized triglyceride, and epoxidized methyl ester of free fatty acids was used as a secondary plasticizer for PVC. An increase in tensile properties was observed by substituting the 10 phr DOP plasticizer with the EeRSO in PVC formulation. A leaching test was performed in five media to evaluate the plasticizing effect. The sample weight increased slightly after soaking in water and 30 wt.% acetic solution, decreased slightly in 10 wt.% KOH solution, and reduced sharply and strongly in sunflower oil and n-hexane. The 10 phr EeRSO in PVC formulation has presented an improvement in migration, volatilization characteristics, and thermal property of PVC. After 72 hours of soaking in n-hexane, the shore A hardness of the EeRSO plasticized PVC sample increased by 14.5% while the PVC sample without EeRSO was blistered and its shore A hardness could not be measured. This was the clearest evidence for the positive effect of EeRSO as a secondary plasticizer. The morphology of the fractured surface of the samples after immersing in n-hexane was studied by using scanning electron microscopy. Thermogravimetric analysis showed the role of EeRSO in significant improvement in thermal stability. In general, EeRSO not only acts as a primary plasticizer to improve the migration, extraction, and volatilization characteristics but also contributes to the thermal stability of PVC.

Mechanical and thermal properties of sisal fiber-reinforced rubber seed oil-based polyurethane composites

2010 ◽  
Vol 31 (9) ◽  
pp. 4274-4280 ◽  
Author(s):  
I.O. Bakare ◽  
F.E. Okieimen ◽  
C. Pavithran ◽  
H.P.S. Abdul Khalil ◽  
M. Brahmakumar
Keyword(s):  
Thermal Properties ◽  
Seed Oil ◽  
Sisal Fiber ◽  
Mechanical And Thermal Properties ◽  
Fiber Reinforced ◽  
Rubber Seed Oil ◽  
Rubber Seed ◽  
Polyurethane Composites

Physico-mechanical and micro-structural analysis of chicken feather particles reinforced rubber seed oil based polyurethane composites

2013 ◽  
Vol 10 (4) ◽  
pp. 343-352 ◽  
Author(s):  
O. Omorogbe ◽  
D. Yawas ◽  
I. Dagwa ◽  
Isiaka Bakare ◽  
M. Isa
Keyword(s):  
Tensile Strength ◽  
Impact Strength ◽  
Seed Oil ◽  
Percentage Increase ◽  
Chicken Feather ◽  
Absorption Properties ◽  
Rubber Seed Oil ◽  
Rubber Seed ◽  
Percentage Weight ◽  
Polyurethane Composites

Chicken feather particles reinforced rubber seed oil based polyurethane composites were produced and the physico-mechanical and microstructural analyses were studied. Casting method was used to produce the composites with varied weights of Chicken feather particles from 5 to 25wt% in steps of 5 wt%. The composites produced were analyzed for hardness, impact strength, tensile strength, density and water absorption properties according to ASTM standards. The density and impact strength were observed to decrease with increase in percentage weight of the chicken feather particles and this was attributed to the fact that the feathers have lower density than RSO-Polyurethane. Tensile strength and hardness of the composites were found to decrease at the intial stage (0 to 10 wt%) and later started to increase with percentage increase(15 to 25 wt%) of reinforment added. The microstructure reveals that there was a reasonable uniform distribution and bonding of chicken feather particles in the RSO-Polyurethane matrix.

OPTIMISATION OF ENERGY AND MATERIALS IN ACID ESTERFICATION OF RUBBER SEED OIL THROUGH RSM AND ANN

2018 ◽  
Author(s):  
Jilse Sebastian ◽  
Vishnu Vardhan Reddy Mugi ◽  
C. Muraleedharan ◽  
Santhiagu A
Keyword(s):  
Seed Oil ◽  
Rubber Seed Oil ◽  
Rubber Seed

Experimental investigations to predict optimistic biodiesel(s) and its optimistic operating conditions by varying ignition delay period and fuel spray pressures for lower emissions and better performance

2020 ◽  
Vol 234 (19) ◽  
pp. 3890-3902
Author(s):  
Vishal V Patil ◽  
Ranjit S Patil
Keyword(s):  
Methyl Ester ◽  
Ignition Delay ◽  
Seed Oil ◽  
Delay Period ◽  
Operating Conditions ◽  
Experimental Investigations ◽  
Rubber Seed Oil ◽  
Rubber Seed ◽  
Neem Seed Oil ◽  
Ignition Delay Period

In this study, different characteristics of sustainable renewable biodiesels (those have a high potential of their production worldwide and in India) were compared with the characteristics of neat diesel to determine optimistic biodiesel for the diesel engine at 250 bar spray pressure. Optimistic fuel gives a comparatively lower level of emissions and better performance than other selected fuels in the study. Rubber seed oil methyl ester was investigated as an optimistic fuel among the other selected fuels such as sunflower oil methyl ester, neem seed oil methyl ester, and neat diesel. To enhance the performance characteristics and to further decrease the level of emission characteristics of fuel ROME, further experiments were conducted at higher spray (injection) pressures of 500 bar, 625 bar, and 750 bar with varying ignition delay period via varying its spray timings such as 8°, 13°, 18°, 23°, 28°, and 33° before top dead center. Spray pressure 250 bar at 23° before top dead center was investigated as an optimistic operating condition where fuel rubber seed oil methyl ester gives negligible hydrocarbon emissions (0.019 g/kW h) while its nitrogen oxide (NOX) emissions were about 70% lesser than those observed with neat diesel, respectively.

High value polyurethane resins from rubber seed oil

2016 ◽  
Vol 66 (1) ◽  
pp. 126-132 ◽  
Author(s):  
Jian Hong ◽  
Xiao-Qin Yang ◽  
Xianmei Wan ◽  
Zhifeng Zheng ◽  
Zoran S Petrović
Keyword(s):  
Seed Oil ◽  
Rubber Seed Oil ◽  
Rubber Seed
Sign in / Sign up

Export Citation Format

Share Document