Multi-response optimization of tensile and fracture properties of polypropylene/ethylene-vinyl acetate/exfoliated graphite by the design of experiment

Abstract

Thermoplastic elastomeric nanocomposites have a wide range of applications in the automotive, medical, electronics, and energy sectors. Good mechanical and fracture performances are typically needed to reach the desired properties for the applications. In this study, tensile and fracture properties of exfoliated graphite (EG) filled PP toughened with ethylene-vinyl acetate (EVA) are examined. Accordingly, four levels of EVA (0, 10, 20, and 30 wt.%) and EG (0, 1, 3, and 5 wt.%) are utilized. The full factorial design is employed to explain the effect of independent parameters and their interaction on responses. The essential work of fracture (EWF) methodology is also employed to investigate the fracture behavior of the blend nanocomposites. By increasing EVA, the elongation at break and non-EWF are increased by 188% and 75%, in succession. Moreover, the tensile modulus is improved up to 11% by increasing EG. The compound with 10 wt.% EVA and 1 wt.% EG has the best toughness-strength-stiffness balance based on the optimization results.

Fracture toughness of PA6/POE‐g‐MA/TiO2 ternary nanocomposites according to the essential work fracture method

“…It is clear that the βw p parameter reflects the ability of plastic deformation in the ligament region. [ 63 ] This decrease can be related to the presence of rigid nanoparticles as a factor for limiting plastic deformation. [ 16 ]…”

“…It is clear that the βw p parameter reflects the ability of plastic deformation in the ligament region. [63] This decrease can be related to the presence of rigid nanoparticles as a factor for limiting plastic deformation. [16] By comparing the data in Table 3 for P10E2T and P10E4T, it was observed that w e increased by 10% and 2%, respectively, compared to the P10E blend.…”

Evaluation of specific total work of fracture in polypropylene/ethylene‐propylene diene monomer nanocomposites based on various graphene derivatives: Optimization by response surface methodology technique and correlation with microstructure properties

“…In the case of validation of mathematical models, a comparison of the actual and predicted w f of fracture is essential to verify the accuracy of acquired results from the RSM technique. [ 34,44 ] For this purpose, the actual and predicted values have been compared in Figure 6B. This figure demonstrates that an excellence agreement exists between experimental and predicted values.…”

Comments on “Identification of micro‐failure processes of HDPE‐henequen fiber composite material by using acoustic emission monitoring: Effect of fiber surface modification”

“…In contrast, the fracture surface of FIBNASIL-PRE showed a relatively smooth area, showing brittle failure, with no signs of high deformation. This should be aligned with low w e and βw p for this compound, [16][17][18][19][20][21] but, the authors reported that FIBNASIL-PRE had the highest EWF parameters.…”