EFFECT OF FUNCTIONALIZED POLYPROPYLENE ON THERMAL, MECHANICAL, AND MORPHOLOGICAL PROPERTIES OF POLYPROPYLEN NYLON-6 BLENDS/

The compatibilizing effect of polypropylene-graft-butyl acrylate (PP-g -BA) on the morphological, thermal, and mechanical properties of polyp ropylene and nylon-6 (Ny-6) blends was investigated. Addition of 2.4% (w/w) PP-g-BA compatibilizer in binary PP/Ny-6 blends results in more regular and finer dispersions of the two phases and improved mechanica l properties. Various mathematical models have been used to explain th e mechanical properties of these blends. Molau's test and MFI data sup port the formation of PP-g-Ny-6 due to chemical reaction between the t erminal amino groups of Ny-6 and the ester groups of PP-g-BA copolymer .