Experimental studies on mechanical properties and toughening mechanisms of PA6/zeolite nanocomposites

Abstract

In recent years, polymer/inorganic nanocomposite have attracted the attention of researchers because of the many superior properties. Incorporation of nano-zeolite as a spherical nano-particle, into the PA6 matrix, can improve the stiffness-toughness properties simultaneously. PA6/zeolite nanocomposites standard mechanical testing specimens, containing different fractions (2.5, 5 and 7.5 wt.%) of nanosized zeolite particles were produced by utilizing a twin screw extruder and injection molding. The mechanical properties were characterized and the morphology was studied using scanning electron microscopy (SEM). The SEM micrograph showed that nano-zeolite were uniformly distributed in the PA6 matrix. The incorporation of nano-zeolite into PA6, increased the tensile strength, tensile modulus, flexural strength, flexural modulus and impact strength. Moreover, nano-zeolite stiffen and toughen PA6 simultaneously, and optimal properties were achieved at 5 wt.% of PA6/zeolite in flexural strength and impact strength. A number of strengthening mechanisms including crack pinning and crack deflection were detected for nanocomposite gear samples.

Bio‐based Polyamide 56: Recent advances in basic and applied research

“…In particular, the mechanical properties and morphological changes of PA vary significantly with the incorporation of nanoparticles 84 . For example, Rasool et al 85 incorporated nano‐zeolite into PA6, showing to increase tensile strength, tensile modulus, flexural strength, flexural modulus, and impact strength. Polyamide 6 (PA6)/polyethylene octene grafted with maleic anhydride (POE‐g‐MA)/titanium dioxide (TiO 2 ) nanocomposites' fracture characteristics were investigated utilizing the essential work of fracture (EWF) approach by Seyyed et al 86 Results showed that EWF and non‐essential work of fracture (non‐EWF) were improved by 73% and 54%, respectively, by increasing POE‐g‐MA up to 30 wt %.…”

The Effect of α-Olefin–Maleic Anhydride Copolymer on the Rheological and Crystalline Properties and Microcellular Foaming Behavior of Polyamide 6

“…However, PA6 generally has a linear molecular structure containing amide groups in the main chain, and the polymer chain segment contains strong polar amide groups (-CO-NH-), making it easy to interact with water (hydrophilic) [4]. Moreover, it has strong hydroscopicity and low melt viscosity, which limits its foaming ability and then hinders application [5,6]. The use of a chain extender in PA6 can effectively overcome these limitations.…”

Mechanical, morphological, and numerical evaluation of biocompatible ultra‐high molecular weight polyethylene/nano‐zeolite nanocomposites

“…[14][15][16][17][18][19] These properties originate from the large specific surface area of nanoparticles, promoting direct interaction with the polymeric matrix, and yielding an exceptionally extensive polymerfiller interfacial region. [20][21][22][23][24][25][26] Numerous research papers have been devoted to this field, showcasing the notable enhancement of mechanical properties upon the integration of diverse nanofillers. [26][27][28][29][30] Hence, there has been significant interest in the modification of UHMWPE using nanoadditives, aiming to enhance its mechanical characteristics and expand its potential applications in the clinical context.…”

“…Nanocomposites present a distinct set of attributes when compared to traditional composites, achieved by introducing minute quantities of nanoreinforcements 14–19 . These properties originate from the large specific surface area of nanoparticles, promoting direct interaction with the polymeric matrix, and yielding an exceptionally extensive polymer‐filler interfacial region 20–26 . Numerous research papers have been devoted to this field, showcasing the notable enhancement of mechanical properties upon the integration of diverse nanofillers 26–30 .…”