Interface Structure between Immiscible Reactive Polymers under Transreaction: a Monte Carlo Simulation

✍ Scribed by Xuehao He; Jürgen Nagel; Dieter Lehmann; Gert Heinrich

• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 150 KB
• Volume: 14
• Category: Article
• ISSN: 1022-1344
• DOI: 10.1002/mats.200500006

✦ Synopsis

Abstract

Summary: The interface structure between two immiscible melts, a polycondensate polymer A (e.g., polycarbonate, polyester or polyamide) and a polymer B, was studied by means of Monte Carlo simulations using the bond fluctuation model. Polymer B contained a reactive end group (e.g., OH, NH~2~ or COOH). Copolymers were generated in‐situ at the interfaces by transreactions (alcoholysis, aminolysis or acidolysis), composing of various length of block A, depending on the position of transreaction in the polycondensate chain A. The content of copolymer at the interface increased with the time, particular fast at the early stage. Fragments of polymers A were released with an end group, reactive to polymers A. This resulted in the proceeding of internal transreactions. An asymmetric interface structure was formed. The simulation also showed that copolymers generated by interfacial transreactions increased the compatibility of the two polymers and enhanced the adhesion strength at the interfaces.
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