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10. Emerging Applications and Implementations of Metal-Organic Frameworks

Author

Shimaa Mohamed Elsaeed, Elsayed Zaki, Abdel-Azim Abdel-Azim, Shimaa Mohamed Elsaeed, Elsayed Zaki, and Abdel-Azim Abdel-Azim

Subjects
Metallic composites--Industrial applications, Polymeric composites--Industrial applications, Organometallic polymers--Industrial applications
Abstract

Metal-organic frameworks (MOFs) are some of the most discussed materials of the last decade. Their extraordinary porosity and functionality from metals and organic linkers make them one of the most promising materials for a vast array of applications. The easy tunability of their pore size and shape from the micro- to meso-scale by changing the connectivity of the inorganic moiety and the nature of the organic linkers makes these materials special. Moreover, by combining with other suitable materials, the properties of MOFs can be improved further for enhanced functionality/stability, ease of preparation, and selectivity of operation. Emerging Applications and Implementations of Metal-Organic Frameworks combines the latest empirical research findings with relevant theoretical frameworks in this area in order to improve the reader's understanding of MOFs and their different applications in areas that include drug delivery, heavy metal removal from water, and gas storage. The design and synthesis of MOFs are also investigated along with the preparation of composites of MOFs. While covering applications that include water defluoridation, rechargeable batteries, and pharmaceutically adapted drug delivery systems, the book's target audience is comprised of professionals, researchers, academicians, and students working in the field of physical and polymer chemistry, physics, engineering science, and environmental science.

Published
2021

14. Unsaturated polyester resins from poly(ethylene terephthalate) waste for polymer concrete

Author

Abdel-Azim, Abdel-Azim A.

Subjects
Polymerization -- Research, Polyethylene terephthalate -- Research, Polyesters -- Research, Engineering and manufacturing industries, Science and technology, Research
Abstract

Depolymerization of poly(ethylene terephthalate), PET, textile waste was performed with a manganese acetate catalyst. Different ratios of diethylene glycol (DG) to propylene glycol (PG) were used for glycolysis. The weight ratio of PET to the glycol mixture was 1:0.65. The glycolyzed products were analyzed for hydroxyl value and the amount of free glycol. These glycolyzed products were reacted with mixtures of sebacic acid (SE) and maleic anhydride (MA) to prepare a series of unsaturated polyesters having different molecular weights. The molecular weights of the unsaturated polyesters produced were determined by the end group analysis. The obtained polyesters were dissolved in styrene (Sty) monomer and their curing behavior was investigated. Polymer concretes (PC) made with these resins were investigated for their compressive strength. The data revealed that the properties of the PC based on recycled PET are comparable to PC made from virgin materials. We concluded that recycling of PET waste may provide a potentially lower cost source of resin, and its recycling in PC will also help reduce an environmental problem., INTRODUCTION Unsaturated polyester (UP) resins are produced by reacting an unsaturated dibasic acid or a mixture thereof with a saturated dibasic acid with a polyhydric alcohol. The product is then [...]

Published
1996

18. DEPOSIT CONTROL AGENTS FOR LUBRICATING OIL.

Author

Ahmed, Nehal S., Nassar, Amal M., Kabel, Khalid I., Abdel Azim, Abdel Azim A., and El-Kafrawy, Ahmed F.

Subjects
LUBRICATING oils, MANNICH bases
Abstract

Different Mannich base compounds based on polyisobutylene succinic anhydride (PIBSA) were prepared. The structures of the prepared compounds were confirmed using Fourier Transform Infrared Spectroscopy (FTIR), Proton Nuclear Magnetic Resonance (1H-NMR) and Gel Permeation Chromatography (GPC) for determination of molecular weight. The efficiency of the prepared compounds as antioxidants and detergents/dispersants were studied. It was found that the efficiency of the prepared compounds as dispersants increases with increasing the number of NH group. It was found that Mannich base compounds are more efficient as dispersants than that before Mannich base formation, and the efficiency of the prepared compounds as antioxidants increases by increasing the number of NH group. The Mannich base formation leads to enhanced efficiency as antioxidants than compounds before Mannich base. [ABSTRACT FROM AUTHOR]

Published
2017

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