Morphology evolution of binary polymer systems using microfabricated samples

摘要

Binary polymer blends with well-defined initial structure were prepared by Computer Numerical Controlling (CNC) machining, photolithography and micro-embossing. Using the methods, we designed the size and distribution of the dispersed phase and the composition of the blends. Compatibilizer can also be easily placed at the interface of the two components during sample preparation. With the micro-fabricated samples, the dynamics of phase inversion and the morphology evolution of binary polymer blends were studied in simple shear flow under isothermal conditions. The effects of interfacial tension, viscosity rate, blend composition, and shear rate on rheology and morphology evolution were investigated.