Study on the reactively compatibilized polyamide 11 (Nylon 11)/polyethylene (PE) Alloys with high performance

摘要

With the ultimate objective of decreasing the high yields cost of Nylon 11 as engineering plastic, blending with PE was studied. The effect of the maleated ethylene-propylene-diene copolymer (EPDM-MAH) as a compatibilizer on the mechanical properties of nylon 11/polyethylene (PE) blends was investigated. Although the tensile strength and elongation at break of compatibilized nylon 11/PE deviated slightly from the pure nylon 11, the Izod impact strength at room temperature and at low temperature was improved markedly by the addition of 3% compatibilizer. The compatibility of compatibilized nylon 11/PE alloys was also studied through morphological observation and rheological behavior analysis. The SEM micrographs of fractured surfaces demonstrated the enhancement of compatibility between nylon and PE by addition of a reactive compatibilizer. The results that the diminished particles size of disperse phase also confirmed the improvement in the compatibility. The rehological behavior revealed that the addition of the compatibilizer enhanced the apparent viscosity of the melting blends, which resulted from the increasing interaction between chains due to the improvement on compatibility of nylon 11 and PE.