Free volume and storage stability of one-component epoxy nanocomposites [Elektronische Ressource] / Muhammad Qasim Shaikh

Free Volume and Storage Stability of One-component Epoxy Nanocomposites Dissertation zur Erlangung des akademischen Grades Doktor der Ingenieurwissenschaften (Dr.-Ing.) der Technischen Fakultät der Christian-Albrechts-Universität zu Kiel Muhammad Qasim Shaikh Kiel 2010 1. Gutachter: Prof. Dr. Klaus Rätzke 2. Prof. Dr. Wolfgang Jäger Datum der mündlichen Prüfung: 11.11.2010 Dedicated to my parents and my wife Table of Contents1. Introduction ...............................................................................................................................12. Positrons and Positronium Annihilation .................................................................................52.1 Introduction ................................................................................................................................ 52.2 Positrons and Positronium........................................................................................................... 52.2.1 Self Annihilation of Positrons and Positronium........................................................... 62.2.2 Pick-off Annihilation of ortho-Positronium................................................................ 62.2.3 Theoretical models for Positronium formation ........................................................... 72.