MORPHOLOGY DEVELOPMENT DURING POLYMER BLENDING

We present results on the morphologies of incompatible polymer blends analysed by several techniques (SEM and particle counter after separat ion). These result show, in the concentration zone just below the inve rsion phase, the simultaneous presence in the blend of nodular and fib rillar structures. A global interpretation of the phenomena allows us to propose a new relation using the Tomokita notion of fiber stability to predict the phase inversion region.