Bøger af Sherif Keshk

The environmental impact of persistent plastic wastes from disposable materials is acutely a growing research field worldwide. Approximately 9.4 million metric tons of plastic wastes were discarded in 2017. Alternate disposal methods are insufficient; incineration can generate toxic air pollution, and satisfactory landfill sites are limited. Since petroleum resources are finite and are becoming limited, the cost of petroleum-based plastics is steadily increasing, and most countries must import these resources.In this book; the preparative method for starch/cellulose composite in different ratios has been discussed. The discussions proved that, the starch/mercerized cellulose composite prepared in 2:1 ratio is the best among other ratios. Starch/ mercerized cellulose composite (2:1) has the lowest thermal expansion with the highest thermal stability owing to the highest crystallinity index. Furthermore, we tried to do inorganic material with cellulose to explore the difference. TiO2/cellulose inorganic¿organic hybrid composites were successfully prepared by the sol-gel method using different compositions of NaOH.starch/cellulose composite is good for industrial applications

Bacterial cellulose has proven to be a remarkably versatile biomaterial and can be used in wide variety of applied scientific endeavors, such as paper products, electronics, acoustics, and biomedical devices. In fact, biomedical devices recently have gained a significant amount of attention because of an increased interest in tissue- engineered products for both wound care and the regeneration of damaged or diseased organs. Due to its unique nanostructure and properties, bacterial cellulose is a natural candidate for numerous medical and tissue-engineered applications.