Results of an investigation of the influence of processing conditions on the structure of branched polyethylene are presented. Under extreme conditions of processing the polymer was found to undergo changes of the molecular weight distribution, and small quantities of oxygen are bound in the form of carbonyl groups. These chemical changes act as active centers a t weathering. Abbau yon Polyethylen niedriger Dichte bei der Verarbeitung und AlterungDie Ergebnisse einer Untersuchung des Einflusses der Verarbeitungsbedingungen auf die Struktur von verzweigtem Polyethylen werden mitgeteilt. Bei extremen Verarbeitungsbedingungen erfahrt das Polymer Anderungen der Molekulmassenverteilung, und kleine Sauerstoffmengen werden in Form von Carbonylgruppen gebunden. Diese chemischen .&riderungen wirken bei der Bewetterung als aktive Zentren. decmpyxyus no~u3mmena nu3~ofi nfiomnocmu B npoyecce 0 6 p a 6 0 m~u u emapenus
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