Authors Gohs, U.; Heinrich, G.; Stephan, M.; Volke, S.; Wagenknecht, U.
Title Electron Treatment of Polymer Melts under Static and Mixing Conditions
Date 19.06.2008
Number 428
Abstract Polymer modification with accelerated electrons is well-established in plastics industry and used for degradation, crosslinking, grafting, curing, and polymerization. These applications use local and temporal precise input of energy in order to generate excited atoms or molecules and ions for subsequent molecule changes via radical induced complex chemical reactions.<br /><br />Interesting chemical reactions can be induced in polymers with accelerated electrons under reactive conditions. The main parameters of reactive electron treatment are dose rate, temperature, gas atmosphere, and mixing conditions during polymer processing. Reactive electron treatment includes controlled generation of reactive species in polymer and surrounding gas, elevated temperature and at least dynamic conditions. Thus a 1,5 MeV electron accelerator has been directly coupled to a banbury mixing chamber in order to study changes in properties of a polypropylene composite under static and dynamic conditions.<br /><br />High temperature, absence of any crystallinity, intensive macromolecular mobility as well as intensive mixing are some reasons for achieving unexpected structures, processing behaviour and property changes in reactive treated polymer composites. Requirements on electron accelerator as well as first results of electron treatment under mixing conditions are presented in detail.
Publisher Proceedings of the Polymer Processing Society 24th Annual Meeting
Citation Proceedings of the Polymer Processing Society 24th Annual Meeting (2008) 3 Pages

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