1. Protenic and Manmade Fibers Department National Research Centre Cairo Egypt
2. Dyeing, Printing and Auxiliaries Department National Research Centre Cairo Egypt
3. Physical Chemistry Department, Institute of Advanced Material Technology and Mineral Resources Research National Research Centre Cairo Egypt
4. Packaging Materials Department, Chemical Industries Research Institute National Research Centre Cairo Egypt
5. Electron Microscope and Thin Film Department Physics Research Division National Research Centre Giza Egypt
6. Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon‐Based Functional Materials & Devices Soochow University Suzhou, Jiangsu China