THE COMPATIBILIZATION OF POLYMER BLENDS WITH LINEAR COPOLYMERS: COMPARISON BETWEEN SIMULATION AND EXPERIMENT

摘要

MC simulation allows careful control of molecular level parameters to allow the examination of the importance of these parameters. An example of one such parameter in copolymers is sequence distribution. MC simulation results have been presented which suggest that 'random' copolymers that are blockier provide improved strength of the biphasic interface than alternating 'random' copolymers. These simulation results also explain seemingly contradictory experimental results. Thus, blocky copolymers are a promising material to provide compatibilization in a phase separated blend as they have been shown to expand at interface in both the parallel and perpendicular directions to allow efficient entanglement with homopolymers. Additionally, they do not microphase separate as easily as diblock copolymers and thus can be more readily driven to the interface.