Interfacial Bonding in a Nanoclay/Polymer Composite

Abstract

In this study, X-ray photoelectron spectroscopy (XPS) was conducted to analyze the chemical composition between epoxy matrix and nanocomposite. This experiment revealed that a chemical bonding at an interface between the matrix and nanoclay of the composites did exist. Thus, such bonding can enhance the mechanical and thermal properties of resultant polymer composites as reported in many literatures.

A pilot study on flexural properties of epoxy nanoclay reinforced composites

“…This is due to the different EP resins and types of nanoclay used. Finally, it is worth pointing out that in addition to the basic reinforcing mechanisms of nanoclay composites, intercalation and exfoliation, interlocking and bridging effects do exist in nanocomposites, as pointed by Chan et al 24…”

“…intercalation and exfoliation, interlocking and bridging effects do exist in nanocomposites and pointed by Chan et al [24]. …”

Improved mechanical performances of short aramid fiber‐reinforced polypropylene composites by Ti3C2 Mxene nanosheets

“…It is well established that the interfacial bonding strength plays an important role in fiber‐reinforced polymer composites. [ 36 ] To get insight into the enhancing effect of Ti 3 C 2 nanosheets on Ti 3 C 2 /SAF/PP composite, the fracture surfaces of SAF/PP and Ti 3 C 2 /SAF/PP composites after tensile test were observed (Figure 6). It is clear that the SAF/PP composite exhibits a clean and smooth fracture surface, and a huge interspace is generated between SAF and PP (Figure 6(A)), implying the weak interfacial adhesion.…”

Multiscale Finite Element Modelling of Gallery Failure in Epoxy-Clay Nanocomposites

“…The strength of the gallery is assumed to be 100MPa, as provided by molecular dynamics (MD) simulations for the covalent bond at the interface between an epoxy system and a solid surface (typical interface between adhesive and rigid adherend) [18]. Then, the critical fracture energy is assumed to vary between 0.01J/m 2 (weak gallery) and 1J/m 2 (strong gallery): results previously reported in the literature show a binding energy of 284eV (corresponding to 50 J/m 2 ) for a chemical bond between epoxy and oxygen atoms of clay [19], cleavage energy of 0.4J/m 2 for non-modified clay [20], and 0.045J/m 2 -0.21J/m 2 for an organoclay [21]. As reported in [13] although polymer material is present between layers in an intercalated structure this does not mean that there is a perfect bond between clay and polymer.…”