Effect of Glassy Polymer Matrix Phase on Impact Strength

1 Effect of Glassy Polymer Matrix Phase on Impact Strength 

It is generally admitted that the glassy polymer that forms the basic structure, that is, the matrix of the system, should have a high molecular weight. This is based on the fact that the quantity of the elastomer, the macromolecular modifier, needed to obtain a high impact strength decreases as the molecular weight 

The impact strength of the modified polymer is sometimes affected by the technique used for its preparation. For instance, the impact strength of (BAN-rubber)-PVC blends is higher for PVC prepared by emulsion polymerization than for PVC prepared by suspension polymerization [40]. 

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