Graded co-continuous morpholog

Figure 10.2 Graded co-continuous morphology obtained at different depths along the propagation direction of light in a PSAF/MMA (10/90) blend irradiated with 365 nm UV light at room temperature. The number on the upper left in each figure indicates the Z-coordinates of the sample.

Nakanishi, H., Namikawa, N., Norisuye, T. and Tran-Cong-Miyata, Q. (2006) Autocatalytic phase separation and graded co-continuous morphology generated by photocuring. Soft Matter, 2, 149—156. 

PPIEPDM blends (Santoprene , Sarlink ) show a co-continuous morphology. The melt has high viscosity, but all the grades are easily extruded. The recommended extruder should have L/D s 24 and the screw a moderate compression ratio, e.g., 2.5 to 3.5 (similar to those used for PVC or PE extrusion). Temperature settings... 

The harder grades of PP/EPDM blends (Santo-prene ) can be blow molded. The resins are characterized by a co-continuous morphology and high viscosity. The recommended parameters for blow molding are similar to profile extrusion. Moisture content is critical and should be kept below 0.1%. 

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