scholarly journals Sunflower oil-based hyperbranched alkyd/spherical ZnO nanocomposite modeling for mechanical and anticorrosive applications

RSC Advances ◽  
2017 ◽  
Vol 7 (35) ◽  
pp. 21796-21808 ◽  
Author(s):  
Mohamed S. Selim ◽  
Mohamed A. Shenashen ◽  
Ahmed Elmarakbi ◽  
Ashraf M. EL-Saeed ◽  
Mahmoud M. Selim ◽  
...  
Keyword(s):  
Sunflower Oil ◽  
Organic Content ◽  
Volatile Organic

Approaches for designing advanced nanomaterials with hyperbranched architectures and lack of volatile organic content (VOC) have attracted considerable attention.

Online Fixed Tank Volatile Organic Content Calculation and Reporting

2019 ◽  
Author(s):  
Shahrul Azman Zainal Abidin ◽  
Azlina Khairi ◽  
Lukman Abdul Karim ◽  
Azleen Azna Khairil Hing
Keyword(s):  
Organic Content ◽  
Volatile Organic

Iodopropionic acid staining of waterborne epoxy films

1995 ◽  
Vol 53 ◽  
pp. 496-497
Author(s):  
O. L. Shaffer ◽  
F.H. Walker ◽  
M. S. El-Aasser
Keyword(s):  
Osmium Tetroxide ◽  
Organic Content ◽  
Equivalent Weight ◽  
Polymer Phase ◽  
Transmission Electron ◽  
Volatile Organic ◽  
Waterborne Epoxy ◽  
Epoxy Equivalent Weight ◽  
Dry Film Thickness ◽  
Dry Film

The examination of polymer material by transmission electron microscopy (TEM) often relies on staining in order to improve contrast or preferentially stain a polymer phase. Stains such as osmium tetroxide for unsaturated polymers and ruthenium tetroxide for unsaturated as well as certain saturated polymers have been used quite extensively. A new stain, 3-iodopropionic acid, has been found to be very useful to stain preferentially the amine rich domains in waterborne epoxy films.An epoxy dispersion (epoxy equivalent weight, EEW=625) and a polyamine adduct curing agent (AHEW=163) at a 1.5:1 stoichiometry was prepared. The volatile organic content (VOC) was 2.6 lb./gal., and the solvent blend was 90.6% propoxy ethanol and 9.4% Aromatic 150. The particles size of the starting dispersion was obtained by TEM and disk centrifuge and found to be approximately 500 nm. Films (approximately 1.2 mil dry film thickness[DFT]) were cast on a partially fluorinated polyethylene film, 0.5, 2, 4, and 8 hours after hand mixing and cured for two or more weeks at 25° C and 50% relative humidity.

Research on Application of Waterborne Marking Paint with Material Properties

2013 ◽  
Vol 700 ◽  
pp. 45-49 ◽  
Author(s):  
Dong Hua Guo
Keyword(s):  
Thermal Sensitivity ◽  
Chemical Properties ◽  
Organic Content ◽  
Metal Corrosion ◽  
Technology Application ◽  
Volatile Organic ◽  
Research On Application ◽  
Market Promotion ◽  
Physical And Chemical ◽  
Road Marking

This paper explains the advantages and shortcomings of waterborne marking paint, based on technical characteristics thereof, describes the physical and chemical properties of said paint required in China, discusses the application status of said paint in China and abroad, and proposes the application trend of said paint in China. The results showed that: the waterborne marking paint has little damages on human and environment because of less volatile organic content (VOC), and has many other advantages such as good retroreflective performance, more conveniently cleaning effect for applying equipment and good skid resistance, etc., while it has the shortcomings of thermal sensitivity, easily freezing performance and metal corrosion, for example; the waterborne marking paint has been used with the third amount based on the total of road marking paint in China, but a further progress needs to be made for the waterborne marking paint in technology, application and market promotion in order to improve its field of application.

Pro-oxidant effects of a high α-tocopherol dose on kidney antioxidant biomarkers and histopathological aspects

2017 ◽  
Vol 87 (3-4) ◽  
pp. 179-190
Author(s):  
Amel Kanane ◽  
Fayrouz Rouaki ◽  
Mohamed Brahim Errahmani ◽  
Abdenour Laraba ◽  
Hayet Mesbah ◽  
...  
Keyword(s):  
Sunflower Oil ◽  
Antioxidant Status ◽  
Basal Diet ◽  
Inflammatory Cells ◽  
Significant Rise ◽  
Control Group ◽  
Histopathological Changes ◽  
Group 5 ◽  
Oxidant Effect ◽  
Higher Doses

Abstract. The aim of this study is to evaluate the effect of α-tocopherol supplementation at two doses (600 and 1200 mg × kg–1) on kidney antioxidant status and the histopathological changes in Wistar rats after 12 weeks of exposure at different diets. Forty rats has been divided into 4 groups of 10 rats each, the control group received basal diet with 5 % fresh sunflower oil (FSO), the second group: 5 % oxidized sunflower oil (OSO), the third group: 5 % OSO supplemented with 600 mg × kg–1 α-tocopherol and the fourth group: 5 % OSO supplemented with 1200 mg × kg–1 α-tocopherol. In OSO groups, the results showed highly significant increases of LPO (from 31.3 ± 0.9 to 53.8 ± 1.2 nmol of MDA formed/min/mg protein, p < 0.0001) with a significant decrease (p < = 0.001) of the antioxidant enzymatic activities (CAT, SOD, GPX, GR and G6PDH), body weight (339 ± 9 to 290 ± 3 g) and α-tocopherol levels (13.6 ± 0.6 to 6.5 ± 0.4 μg/mg protein). In OSO groups with 600 mg × kg–1 α-tocopherol, an antioxidant effect was found, reflected by a return of the parameters to values similar to those of the control group. However, higher doses of α-tocopherol (1200 mg × kg–1) induced a depletion of antioxidant status, α-tocopherol levels (6.0 ± 0.3 μg/mg protein, p < 0.001) and a very highly significant rise (p < 0.0001) of LPO content (54.86 ± 0.01 nmol of MDA formed/min/mg protein). The kidney tissues also showed changes in glomerular, severe inflammatory cells infiltration, and formation of novel vessels. So, we can conclude that the oxidative stress is attenuated by a moderate administration of 600 mg × kg–1 α-tocopherol, while a pro-oxidant effect occurs at 1200 mg × kg–1 α-tocopherol.

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