Study on the microstructures and mechanical behaviour of compatibilized polypropylene/polyamide‐6 blends

Abstract

A series of blends of polypropylene (PP)–polyamide‐6 (PA6) with either reactive polyethylene–octene elastomer (POE) grafted with maleic anhydride (POE‐g‐MA) or with maleated PP (PP‐g‐MA) as compatibilizers were prepared. The microstructures and mechanical properties of the blends were investigated by means of tensile and impact testing and by scanning electron microscopy and transmission electron microscopy. The results indicated that the miscibility of PP–PA6 blends was improved with the addition of POE‐g‐MA and PP‐g‐MA. For the PP/PA6/POE‐g‐MA system, an elastic interfacial POE layer was formed around PA6 particles and the dispersed POE phases were also observed in the PP matrix. Its Izod impact strength was four times that of pure PP matrix, whilst the tensile strength and Young's modulus were almost unchanged. The greatest tensile strength was obtained for PP/PA6/PP‐g‐MA blend, but its Izod impact strength was reduced in comparison with the pure PP matrix. © 2002 Society of Chemical Industry

Microstructures and mechanical properties of polypropylene/polyamide 6/polyethelene-octene elastomer blends

“…This is the reason why we undertook a systematic work in order to understand the microstructural interrelations between elastic, plastic and cavitation processes in selected blends. In a preliminary work [21], we found that polyethylene-octene elastomer (POE) grafted with maleic anhydride was more efficient than the previously utilized modifiers for the PP/ PA6 system, since it provides a high impact strength.…”

A novel approach for an in-line atmospheric plasma-treatment of polymers and reinforcements during extrusion

“…observe a similar behaviour of PP-PA6-blends, when using a polyethyleneoctene elastomer grafted with maleic anhydride [53,54]. However, the increase of the impact strength is attributed to introducing the polyethylene-octene elastomer grafted with maleic anhydride into the PP-PA6-blend, which coats the PA6 particles and also remains as small particles in the PP-matrix.…”

Polypropylene–clay blends compatibilized with MAH‐g‐POE

“…[7][8][9][10][11] To our knowledge, MAH-grafted-POE (MAH-g-POE) has succeeded in improving the compatibility and mechanical properties of incompatible blends. For example, Zeng et al 12 investigated the PP/PA6 blends and found that MAH-g-POE could improve the miscibility between PP and PA6 and achieved high performance PP/PA6 blends. Bai et al 13 studied the PP/PA6/POE ternary blends and concluded that the desired properties of the blends could be obtained through variations in PA6 and MAH-g-POE percentages in the blends.…”