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Effect of nonmodified and organically modified montmorillonite incorporation on polyamide 6/acrylonitrile‐ethylene‐propylene‐diene‐styrene/methyl methacrylate‐co‐maleic anhydride system

Effect of nonmodified and organically modified montmorillonite incorporation on polyamide... Nanocomposites based on polyamide 6/acrylonitrile‐ethylene‐propylene‐diene‐styrene/methyl methacrylate‐co‐maleic anhydride (PA6/AES/MMA‐MA) system were prepared through the incorporation of the nonmodified montmorillonite Cloisite® Na+ (Nano Na+) and the organically modified montmorillonite Cloisite® 30B (Nano 30B) via melt blending process. Nano Na+ exhibits an intercalated structure with large tactoids and mechanical performance comparable to the ternary blend. On the other hand, Nano 30B exhibits exfoliated structure and a significant enhancement of stiffness as a result of the high interaction between PA6/Cloisite® 30B. After an extensive investigation concerning the crystalline structure of the nanocomposites, we hypothesized that such high interaction between PA6/Cloisite® 30B hampers the crystallization process of PA6, so small and imperfect γ‐crystals were predominantly formed in Nano 30B. In turn, the low interaction between PA6/Cloisite® Na+ did not negatively affect the PA6 crystallization process; quite the opposite, we believe that the large tactoids observed in Nano Na+ might be acting as nucleation sites, resulting in a large degree of crystallinity and a considerable ratio of α‐phase. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Polymer Crystallization Wiley

Effect of nonmodified and organically modified montmorillonite incorporation on polyamide 6/acrylonitrile‐ethylene‐propylene‐diene‐styrene/methyl methacrylate‐co‐maleic anhydride system

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References (29)

Publisher
Wiley
Copyright
© 2021 Wiley Periodicals LLC.
eISSN
2573-7619
DOI
10.1002/pcr2.10212
Publisher site
See Article on Publisher Site

Abstract

Nanocomposites based on polyamide 6/acrylonitrile‐ethylene‐propylene‐diene‐styrene/methyl methacrylate‐co‐maleic anhydride (PA6/AES/MMA‐MA) system were prepared through the incorporation of the nonmodified montmorillonite Cloisite® Na+ (Nano Na+) and the organically modified montmorillonite Cloisite® 30B (Nano 30B) via melt blending process. Nano Na+ exhibits an intercalated structure with large tactoids and mechanical performance comparable to the ternary blend. On the other hand, Nano 30B exhibits exfoliated structure and a significant enhancement of stiffness as a result of the high interaction between PA6/Cloisite® 30B. After an extensive investigation concerning the crystalline structure of the nanocomposites, we hypothesized that such high interaction between PA6/Cloisite® 30B hampers the crystallization process of PA6, so small and imperfect γ‐crystals were predominantly formed in Nano 30B. In turn, the low interaction between PA6/Cloisite® Na+ did not negatively affect the PA6 crystallization process; quite the opposite, we believe that the large tactoids observed in Nano Na+ might be acting as nucleation sites, resulting in a large degree of crystallinity and a considerable ratio of α‐phase.

Journal

Polymer CrystallizationWiley

Published: Dec 1, 2021

Keywords: acrylonitrile‐ethylene‐propylene‐diene‐styrene; blends; montmorillonite; nanocomposites; polyamide 6

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