Effect of morphology development on the crystallization behavior, dynamic mechanical properties, and toughness of the PA‐6/plasticized PVB/organoclay nanocomposites

Abstract

PA-6/PVB blends and related nanocomposites with organoclay were prepared via melt-processing and structure-property relationships were comprehensively investigated. The SEM observations showed that blend composition and organoclay content play significant roles in the development of morphology. The differential scanning calorimetry results revealed occurrence of fractionated crystallization in the blends due to development of co-continuous morphology. In contrast, the degree of fractionated crystallization decreased in the nanocomposites owing to role of the nanoclay as heterogeneous nucleating agent. It was found that there is an interesting relationship between morphology development and dynamic mechanical properties of the blends. Furthermore, the effects of the morphology development and nanoclay on the viscoelastic behavior of the nanocomposites were synergistic and/or counteracting depending on the Cloisite 30B content. The PA-6/PVB blends with co-continuous morphology showed outstanding toughness. In addition, the PA-6/PVB50 blend with low nanoclay concentration exhibited high impact strength, which was originated from low interparticle distance between PVB domains in the matrix. POLYM. COMPOS., 00:000-000, 2017.

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

“…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…”

Compatibilization of polypropylene/poly(glycolic acid) blend with maleated poe/attapulgite hybrid compatibilizer: Evaluation of mechanical, thermal, rheological, and morphological characteristics

“…With the addition of compatibilizer, PGA was separated into numerous small‐scale droplets, which led to the heterogeneous nucleation of PP that was delayed even though the promotion of POE and ATP components. This result has been reported in other previous works . However, the T c of PP was increased gradually as increasing the addition of compatibilizer.…”

“…This result has been reported in other previous works. [41][42][43][44] However, the T c of PP was increased gradually as increasing the addition of compatibilizer. The crystallization process of PGA was completely suppressed at T c of PGA to cocrystallized with PP, meaning that the crystallization process of PP was mainly controlled by the heterogeneous nucleation effect of ATP and POE.…”

The addition effect of hollow glass microsphere on the dispersion behavior and physical properties of polypropylene/clay nanocomposites

“…This also could be due to a nucleating effect of maleic anhydride in addition to the reaction with the carbonyl group to PP . Adding PP‐g‐MA enables the PP nanocomposites improve the interfacial adhesion between PP and clay resulting in homogenous dispersion in PP matrix, and this had a great effect on increasing the crystalline temperature of PPNMs samples as well …”