Compatibilization of polyethylene/polyamide 6 blends with oxazoline-functionalized polyethylene and styrene ethylene/butylene styrene copolymer (SEBS)

Abstract

Study was made of the compatibilization of polyethylene/polyamide 6 (PE/ PA6) blends with a ricinoloxazoline maleinate grafted polyethylene and styrene ethylene/butylene styrene copolymer. The blends were prepared in a twin-screw midiextruder, and the specimens for mechanical tests were injection molded with a miniinjection molding machine. The effect of compatibilizing on the mechanical properties and the morphology of the blends was studied. The toughness and ductility of the blends were substantially improved as a result of the compatibilization. Simultaneously, the strength and stiffness were slightly reduced. Morphological studies showed that the particle size was reduced and the adhesion of the dispersed phase to the matrix was improved by the compatibilization.

Filmability and properties of compatibilized PA6/LDPE blends

“…The films show fine morphology and satisfactory mechanical properties. As already demonstrated in previous work [22,27] the improvement of the CP efficiency of EAA obtained by the addition of PBO is explained through the ability of the latter compound to promote the formation of PA6-g-EAA copolymers.…”

Compatibilization of polyethylene/polyamide 6 blends with functionalized polyethylenes prepared with metallocene catalyst

“…The phases were cocontinuous owing to the higher viscosity of the polyamide component, as discussed in detail in an earlier study. 18 An addition of 10 wt % of any of the compatibilizers to the PE/PA6 (40/60) blend resulted in much finer morphology, as can be seen in Figure 7(b-d). Adhesion between the phases improved, evident as a ragged interphase with much lower steps between the blend components.…”

“…17 In our earlier study, polyethylene/polyamide 6 (PE/PA6) blend of composition 40/60 was successfully compatibilized with oxazoline-grafted polyethylene. 18 In this article, we describe the metallocene-catalyzed copolymerization of ethylene with 10-undecen-1-ol, 10-undecenoic acid, and N-methyl-10-undecenylamine and the use of these copolymers as compatibilizers in the same PE/PA6 blend. The effectiveness of the compatibilizers was evaluated in terms of the mechanical and thermal properties and the morphology of the blends.…”

Tribological behavior of polyamide 66‐based binary and ternary composites

“…When SEBS-g-MA was added, the chemical reactions between the maleic anhydride group of SEBS-g-MA and the amine end group of PA66 resulted in the formation of SEBS-g-PA66 copolymer [15]. This copolymer, being present at the blend interface, helped to decrease the high stress concentrations by local plastic deformation [16]. As a result, SEBS-g-MA copolymerreinforced PA66/SEBS-g-MA binary composite showed excellent friction and wear resistance among the four samples.…”