Influence of Different Type of Compatibilizers on Structural Features and Physical-Mechanical Properties of Nanocomposites Based on Polypropylene Random Copolymer

The article shows the influence of the type and composition of commercial grade compatibilizers on the degree of compatibility difficult mix polypropylene random copolymer/aluminum hydroxide (PP‑R/Al(OH)3) systems. The influence of the compatibilizer type and the aluminum hydroxide content on the properties of the PP-R/Al(OH)3 composite was investigated. For this purpose, PP-R/Al(OH)3 and PP‑R/compatibilizer /Al(OH)3 composites were obtained by mixing them on hot rollers in the melt mode. Three kinds of compatibilizer were used: maleic anhydride functionalized polypropylene copolymer, maleic anhydride functionalized homopolypropylene, blend of fatty acid metal soap and amide. The influence of compatibilizers on the properties and compatibility of PP-R/Al(OH)3 composites was studied. Compatibilization was compared from the physical and mechanical properties, morphology, and melt properties of the blends. The morphology and dispersion of Al(OH)3 in PP-R composites evaluated using scanning electron microscope (SEM). It was shown that relatively uniform dispersion of Al(OH)3 in the PP-R matrix was achieved in the presence of compatibilizers. Studies showed that the compatibilizers not only improved the compatibility of the mixed components of the mixture but also the interfacial adhesion between Al(OH)3 and PP-R. Composites with a compatibilizer showed a more homogeneous morphological structure, which has a positive effect on improving their main physical and mechanical characteristics.