Binary and ternary blends of polyethylene, polypropylene, and polyamide 6,6: The effect of compatibilization on the morphology and rheology

Abstract

ABSTRACT:The effects of two compatibilizing agents, polystyrene-poly(ethylene butylene)-polystyrene copolymer (SEBS) and SEBS-grafted maleic anhydride (SEBS-g-MAH), on the morphology of binary and ternary blends of polyethylene, polypropylene, and polyamide 6,6 were investigated with scanning electron microscopy and melt rheology measurements. The addition of the compatibilizers led to finer dispersions of the particles of the minor component and a decrease in their size; this induced a significant change in the blend morphology. The rheological measurements confirmed the increased interaction between the blend components, especially with SEBS-g-MAH as the compatibilizer. New covalent bonds could be expected to form through an amine-anhydride reaction.

Toward In Situ Compatibilization of Polyolefin Ternary Blends through Morphological Manipulations

“…Besides, in situ compatibilization of this blend system by incorporation of maleated PP, namely PP‐g‐MA, was reasonably led to an improvement of interfacial adhesion via reaction of anhydride groups with the amino end groups of PA6 . Similar results were reported elsewhere utilizing anhydride grafted poly (styrene‐ b ‐(ethylene‐ co ‐butylene)‐ b ‐styrene) (SEBS), referred to as SEBS‐g‐MA, ending in enhanced mechanical characteristics . Blending of PA6, as minor component, by PE was the subject of different investigations to get barrier properties .…”

Effect of compatibilizing agents on the physical properties of iPP/HDPE organoclay blends

“…Here, c H ∞ is the hardness for an infinitely thick crystal, and b is defined as [44]: b = 2σ e /Δh (4) In this expression, Δh is the energy required to plastically deform the crystalline lamellar stacks. From (1-Φ 1 ) also applies here.…”

“…Their mixtures exhibit very moderate and unpredictable mechanical properties, due to their influence on many parameters, such as morphology and crystallinity. To improve theses properties, physical or chemical compatibilizers, such as block (or graft) copolymers, or in-situ reactive compatibilizers, have been added to the blend [1][2][3][4][5][6][7]. These compatibilizers contribute to the reduction of interfacial tension, and facilitate the dispersion, stabilize the generated morphology against modification during the processing steps and, in addition, enhance the adhesion between the polymers phases.…”

The effect of zinc oxide addition on the compatibilization efficiency of maleic anhydride grafted high‐density polyethylene compatibilizer for high‐density polyethylene/polyamide 6 blends

“…Some studies investigated changes in room temperature mechanical properties with compatibilization 22,25,27,28 ; however, some studies were interested primarily in rheological behavior. 27,29,30,33 The addition of compatibilizer raises G 0 at low frequencies, 29 reduces the interfacial tension, 11 and increases the steady-shear melt viscosity. 17,22 3.…”