1. Institute of Textile Research and Technology National Research Centre Dokki Cairo Egypt
2. Department of Chemistry, College of Science Taif University P.O. Box 11099 Taif Saudi Arabia
3. Polymeric Materials Research Department, Advanced Technology and New Materials Research Institute City of Scientific Research and Technological Applications (SRTA‐CITY) New Borg El‐Arab City Alexandria Egypt
4. Faculty of nanotechnology for postgraduate studies Cairo University El‐Sheikh Zayed Egypt
5. Physics Department, College of Science and Humanities Prince Sattam Bin Abdulaziz University P.O. 173 Al‐Kharj Saudi Arabia
6. Physics Department, Faculty of Science Zagazig University Zagazig Egypt