Ultrasound-Assisted Synthesis and Its Effect on the Properties of CaCO3–Polymer Nanocomposites

2016 ◽  
pp. 297-324 ◽  
Author(s):  
Bharat A. Bhanvase ◽  
Shirish H. Sonawane
Keyword(s):  
Polymer Nanocomposites ◽  
Ultrasound Assisted

scholarly journals Metamaterial Behavior of Polymer Nanocomposites Based on Polypropylene/Multi-Walled Carbon Nanotubes Fabricated by Means of Ultrasound-Assisted Extrusion

Materials ◽  
2016 ◽  
Vol 9 (11) ◽  
pp. 923 ◽  
Author(s):  
Juan Pérez-Medina ◽  
Miguel Waldo-Mendoza ◽  
Víctor Cruz-Delgado ◽  
Zoe Quiñones-Jurado ◽  
Pablo González-Morones ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Polymer Nanocomposites ◽  
Multi Walled Carbon Nanotubes ◽  
Ultrasound Assisted ◽  
Walled Carbon Nanotubes

scholarly journals Ultrasound-Assisted Melt Extrusion of Polymer Nanocomposites

2019 ◽  
Author(s):  
Carlos A. Ávila-Orta ◽  
Pablo González-Morones ◽  
Diana Agüero- Valdez ◽  
Alain González-Sánchez ◽  
Juan G. Martínez-Colunga ◽  
...  
Keyword(s):  
Polymer Nanocomposites ◽  
Melt Extrusion ◽  
Ultrasound Assisted

Electret effect in polymer nanocomposites (review

2019 ◽  
Vol 5 (2) ◽  
pp. 6-18
Author(s):  
V. A. Goldade ◽  
◽  
S. V. Zotov ◽  
V. M. Shapovalov ◽  
V. E. Yudin ◽  
...  
Keyword(s):  
Polymer Nanocomposites ◽  
Electret Effect

Innovative Extraction Techniques for the Optimum Extraction of Phenolic Compounds from Peanut Meal and Evaluation of Their Biological Activities

2019 ◽  
Vol 4 (2) ◽  
Keyword(s):  
Phenolic Compounds ◽  
Carcinoma Cell ◽  
Biological Activities ◽  
Peanut Meal ◽  
Ultrasound Assisted Extraction ◽  
Carcinoma Cell Lines ◽  
Assisted Extraction ◽  
Phenolic Extract ◽  
Ultrasound Assisted ◽  
Water Ratio

There is a worldwide demand for phenolic compounds (PC) because they exhibit several biological activities. This work aimed at extracting phenolic compounds from peanut meal. The methods of extraction were mainly: conventional solvent extraction (traditional methods) and ultrasound assisted extraction (recent methods) and comparing their results. Peanut meal (PM) was prepared by defatting with n-hexane, and then extracted by the two previous methods. First, the conventional solvents used were 80% methanol, ethanol, acetone, isopropanol, and distilled water. Then studied Different parameters such as meal: water ratio, also the effect of temperature and the pH on the extraction process. Second, ultrasonic assisted extractions (USAE), the parameters investigated were temperature, time and speed of sonication. Finally, all the extracts were analyzed by HPLC for their phenolic contents. Results indicated that the highest extracted PC achieved by solvents was in distilled water where 1:100, Meal: Water ratio which extracted 40 mg PC / g PM at 30& 35°C. Highest extracted PC was achieved by alkaline medium at pH 12 more than acidic and neutral medium. While (USAE) at speed 8 ultrasonication and temperature 30ᵒC, extracted 49.2mg PC /g PM. Sothe ultrasound assisted extraction exhibited great influence on the extraction of phenolic compounds from peanut meal. The ultrasonic peanut extract was examined for its antioxidant, antimicrobial and anticarcinogenic activities. The antioxidant activity of PM phenolic extract prepared by ultrasonic technique, was measured by, β-carotene, and DPPH methods, and reducing antioxidant power. Results revealed values: 84.57, 57.72 and 5960 respectively. The PM extract showed different levels of antimicrobial activity against the pathogenic bacteria used. As for the anticarcinogenic effect PM phenolic extract most effective on inhibiting colon carcinoma and lung carcinoma cell lines with IC50 = 20.7 and 20.8 µ/ml., respectively. This was followed by intestinal carcinoma and liver carcinoma cell lines with IC50= 39.6 and 40.2µ/ml.

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