Structural, rheological, and mechanical properties of PA6/SAN/SEBS ternary blend/organoclay nanocomposites

Abstract

The aim of this study was to investigate the effect of nanoclay addition on the morphological and mechanical properties of PA6/SAN/SEBS ternary blend. Two different nanoclays with different modifiers and two different mixing sequences were used to investigate the role of thermodynamic and kinetic, respectively, in the nanoclays localization. XRD, SEM, TEM, melt rheology, tensile and Izod impact tests were used to characterize the nanocomposites. Results of characterization of nanocomposites showed that clay localization is a very influential parameter to determine the type of morphology and, consequently, mechanical properties of ternary/clay nanocomposites. It was demonstrated that presence of nanoclay in the matrix results in the increase of stiffness, while localization of nanoclay at the interface improves the toughness and tensile strength.

Does nanoclay addition always lead to amelioration? Dual effects of the nanoclay on the PA‐6/EVOH/SEBS ternary blends

“…It is due to the kinetic effect of this protocol (initially mixing of EVOH and Cloisite 15A). A similar finding was reported for the PA6/SAN/SEBS/organoclay nanocomposites …”

“…In fact, polar groups of PA‐6 chains can create chemical and physical interactions with hydroxyl groups of the organic modifier (MT2ETOH) in Cloisite 30B, and as a result, melt intercalation takes place efficiently in the PA‐6/nanoclay masterbatch. Similar observations regarding affinity of the PA‐6 matrix to different organoclays especially Cloisite 30B have been reported by Kelnar et al, Filippone et al, Zanjanijam et al, and Babaei et al…”

“…To the best of our knowledge, there is relatively few reports regarding the ternary blends incorporating nano‐materials, and also there is no comprehensive study on the PA‐6/ethylene vinyl alcohol (EVOH)/SEBS/nanoclay nanocomposites. Our previous researches demonstrated that there are some fascinating prospects of research in the field of this class of materials, which deep understanding and controlling the affecting parameters can help us to achieve desired properties . Therefore, this research tries to uncover the structure‐property relationships in these class of nanocomposites.…”

Investigating the mechanical, morphological, and thermal behavior of PA‐6/SAN/MWCNT blends: Application of Taguchi experimental design

“…Incorporation of nanoparticles into the polymer blends has been the subject of a great number of researches in academia and industry. This approach is associated with interesting results such as improving the mechanical properties, adding new characteristics, such as electrical properties, or controlling of the phase morphology . For example, Elias et al reported that silica nanoparticles induced a decrease in the effective interfacial tension between polypropylene (PP) and ethylene vinyl acetate phases and thereby a lower particle size for dispersed phase .…”

Development of simplified Tandon‐Weng solutions of Mori‐Tanaka theory for Young's modulus of polymer nanocomposites considering the interphase

“…In addition, the homogeneous dispersion of nanoparticles in polymer matrix significantly improves the properties of nanocomposites . However, good dispersion of inorganic particles in organic polymer matrix becomes difficult when the dimension of particles approached nanoscale . It results in aggregation/agglomeration of nanoparticles in polymer matrix due to lack of compatibility between nanofiller and polymer matrix.…”