Exfoliated graphite nanoplatelets/poly(arylene ether nitrile) nanocomposites

Abstract

In this work, we demonstrate a method for synthesis of exfoliated graphite nanoplatelets (xGnPs)/poly(arylene ether nitrile) (PEN) nanocomposites via an efficient in situ polymerization. The GnPs were treated by the ultrasonic bath to reduce the layers of the GnPs, where the PEN were intercalated subsequently. Therefore, the dispersion of xGnP in the PEN resin was enhanced through in situ polymerization, which was characterized and confirmed by scanning electron microscopy, transmission electron microscopy, and Fourier transform infrared spectroscopy. It was found that the tensile strength and modulus were greatly enhanced with the addition of xGnP. For 2.5 wt% of xGnP-reinforced PEN, the tensile strength and modulus were increased to 115 MPa and 3121 MPa, respectively. Owing to the well dispersion of xGnP, the low rheological percolation of 2.5 wt% for PEN nanocomposites was obtained. Besides, with 1 wt% of xGnP, the corresponding initial decomposition temperature ( Tin) increased from 451°C in pure PEN to 470°C. The addition of xGnP showed enhanced thermal stability of PEN nanocomposites, which demonstrated a promising method for preparing advanced polymer-based nanocomposites.

Non-Isothermal Crystallization Behavior of PEEK/Graphene Nanoplatelets Composites from Melt and Glass States

“…This trend was more pronounced for composite with 10 wt % of GNP, the Newtonian behaviour disappeared, and in G′, the rubbery plateau formation was unmistakable. This fact is due to the transition from liquid-like to solid-like viscoelastic behaviour, caused by the interactions particle-particle that dominate over the polymer-filler interactions, forming an incipient interconnected network of GNP [34,35]. This network limits the large-scale motions of PEEK chains, affecting the global crystallization process, as is discussed below.…”

Graphene/graphene nanoplatelets reinforced polyamide nanocomposites: A review

“…52 The high mechanical properties and low percolation thresholds have been achieved by this method. 56 The graphene and GNPs based polymer 39 nanocomposites such as graphite nanoflake/PA6, 55 exfoliated graphite nanoplatelets/ poly(arylene ether nitrile) nanocomposites, 57 graphene nanoplatelets/polypropylene composite, 58 polyurethane/graphene nanoplatelets green nanocomposites, 59 polyurethane/graphene nanoplatelets nanocomposites, 60 epoxy composites reinforced with graphene nanoplatelets, 61 expandable graphite/PA6 nanocomposites, 45 exfoliated graphite nanoplatelets/PA12 composites, 62 exfoliated graphite intercalated compound/polyamide, 63 exfoliated graphene, 30 graphene oxide/PA6, 53,[64][65][66][67] graphene oxide/monomer cast nylon, 68 biobased graphene/PA11, 69 graphene oxide/PA6T-co-6(PA6T/6) 70 have been fabricated by in-situ polymerization method.…”

A Novel Class of Cost Effective and High Performance Composites Based on Terephthalate Salts Reinforced Polyether Ether Ketone

“…In the case of 30 wt %, at low frequency, the complex behavior began to leave the Newtonian behavior, because of the increase of the polymer chain mobility restrictions. This fact is due to the transition from liquid-like to solid-like viscoelastic behavior, caused by the particle-particle interactions that dominate over the polymer-filler interactions, forming an incipient interconnected network of CATAS [27,28]. In general, even large amounts of these nanofillers do not drastically change the rheological characteristics of the melt.…”