1. Petroleum Applications Department; Egyptian Petroleum Research Institute; Ahmed El-Zomor St Nasr City 11727 Cairo Egypt
2. Laboratory of Advanced Polymers and Optimized Materials (LAPOM), Department of Materials Science and Engineering and Center for Advanced Research and Technology (CART); University of North Texas; 3940 North Elm Street Denton TX 76207 USA
3. Surfactant Research Chair, Department of Chemistry, College of Science; King Saud University; PO Box 2455 Riyadh 11451 Kingdom of Saudi Arabia
4. Department of Physics; University of North Texas; Denton TX 76203 USA