Compatibilization and Compatibilized Blends

Crosslinking system None Peroxide/ co-agent Sulfur Phenolic resin Hydrosilation 

Color of TPV Natural Natural Yellowish Yellowish Natural 

The compatibilizer is a block or a graft copolymer. One segment of this block/graft copolymer is miscible with one component of the blend, while the other segment is miscible with the other component of the blend. During the melt mixing process, the compatibilizer becomes located at the interface of these immiscible polymers and improves the adhesion between the two phases. 

The compatibilizer can be prepared by polymerization of one monomer, followed by a second monomer. One can also polymerize monomers on a polymer backbone to form a graft copolymer. The formation of a graft or block copolymer can be made possible in the reactors or by chemical modifications of the polymers so that they will 

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A schematic representation of non-compatibilized and compatibilized blends is given in Figure 1.3. 

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