Toughening of PA6 nanocomposites by reactive acrylonitrile–butadiene–styrene core–shell rubber particles

Abstract

The effect of addition of organoclay and the reactive ABS-g-MA core-shell particles on the mechanical properties and morphology of blends of polyamide (PA6) were reported. The reactive rubber particles with core-shell structure were selected as modifier instead of conventional reactive bulk rubber. The microstructure of the ternary nanocomposites was characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). Impact strength and stress-strain behavior of blends were measured as a function of organoclay content and core/shell ratio of ABS-g-MA. The organoclay plates affected the interfacial adhesion between polyamide and the core-shell particles because of a shielding effect of organclay on the interacting of amine end groups of PA6 with the MA groups of ABSg-MA. The poor dispersion behavior of ternary nanocomposites was observed when the core/shell ratio is 80/20, and with an increase of organoclay content, the core/shell dispersed phase size increased. Blends based on the maleated elastomer with the core/shell ratio 60/40 gave a more beneficial balance of toughness versus stiffness. POLYM. COMPOS., 35:864-871,

A unique strategy towards high dielectric constant and low loss with multiwall carbon nanotubes anchored onto graphene oxide sheets

“…It is envisaged that the maleic anhydride groups in mABS can react with the PA6 during blending. 27 However, as the maleic anhydride content in mABS is less than 0.7 wt% (as provided by the supplier) the extent of the reaction can be less. The possibility of the terminal amine groups in PA6 reacting with the carbonyl acid groups of GO cannot be ruled out either.…”

Characterization of Blend PA6 +EPDM (60/40) by Tensile Tests

“…Polyamides could have impact characteristics improved by adding an elastomer or elastomer modified polymers. Frequently, in polyamides and in their blends, there were added SEBS-g-MA with clay [20][21][22][23][24], SEBS-g-MA+montmorillonit [25], (SEBS)+nanosilica [26], SEBS-g-MA+nano particule de carbură de siliciu [3]; NBR+clay [27], ABS [28,29], EPDM+clay [30][31][32], EPDM+sepiolit [33] mEPR)+clay 34; silicon elastomer+clay [35]; PA+(EOR)+clay [36]; elastomer etilen-co-butil acrilat/nanotalc [37], PA+PP+EPDM 38, 39], PA+EPDM [40].…”

Toughening of polyamide‐6 with little loss in modulus by block copolymer containing poly(styrene‐alt‐maleic acid) segment

“…Thus it is hard to control the inclusion size of immiscible polymer in polyamide matrix so that the toughening efficiency was restricted . To improve the miscibility of blends and increase the interfacial adhesion between the matrix and the disperse phase, the method of reactive compatibilization was developed . Strong toughening effects are usually achieved by reactive blending to obtain the well‐dispersed rubber inclusion .…”