[1]Helmholtz-Zentrum Geesthacht Zentrum J~r Material- und Kiistenforschung GmbH Institute of Polymer Research Max-Planck-Strafle 1 21502 Geesthacht Germany;
[2]Department of Chemistry The Women University Multan Pakistan;
[3]Polymer and Surface Engineering Lab School of Chemical and Materials Engineering National University of Sciences andTechnology H-12 Sector lslamabad Pakistan;