Influences of Reactive Compatibilizer R-Styrene-Maleic Anhydride Copolymer on PA6/PP Blends

摘要

The effect of R-styrene-maleic anhydride copolymer(R-SMA) compatibilzation on Nylon 6(PA6)/polypropylene(PP) blends has been investigated experimentally through Molau test,microscopic morphology,and chemical structure.Results show that the moderate R-SMA addition can promote reaction between anhydride in R-SMA and amino in PA6,and lead to a new PA6-g-R-SMA copolymer in the blends.Such PA6-g-R-SMA copolymer in the blends can effectively reduce the interfacial tension and PP particle size,and improve the compatibility of two immiscible phases in the blends.The crystallinity of PA6 in PA6/PP blends has greatly decreased by PP blends.The blends have the best comprehensive mechanical and thermal properties when the mass ratio of PA6/PP/R-SMA is 90:10:2 to 90:10:4.The impact strength of the PA6/PP blends with the compatibilizer is increased by more than 150%.