Modeling and analysis of nonlinear elastoplastic behavior of compatibilized polyolefin/polyester/clay nanocomposites with emphasis on interfacial interaction exploration

Analysis and modeling of modified styrene–acrylonitrile/carboxylated acrylonitrile butadiene rubber nanocomposites filled with graphene and graphene oxide: Interfacial interaction and nonlinear elastoplastic behavior

“…The reason for this behavior is the existence of sufficient interaction between F I G U R E 7 Most probable chemical interaction of carboxylated acrylonitrile butadiene rubber (XNBR)/XNBR-grafted-glycidyl methacrylate (XNBR-g-GMA), styrene-acrylonitrile (SAN), and graphene oxide F I G U R E 8 Mechanical properties obtained from stress-strain curves of styrene-acrylonitrile/carboxylated acrylonitrile butadiene rubber (SAN/XNBR) nanocomposites containing graphene and graphene oxide with and without XNBR-grafted-glycidyl methacrylate (XNBR-g-GMA) compatibilizer; (A) elongation at break, (B) tensile strength, and (C) Young modulus the GMA groups of the XNBR-g-GMA compatibilizer and the carboxyl/hydroxyl groups of the XNBR. [58] For this phenomenon, Figure 7 displays the most probable chemical interaction of XNBR/ XNBR-g-GMA, SAN, and GO, as concluded in our previous studies. [17] These results help to analyze the nonlinear elastoplastic mechanical behavior of hybrid systems with different surface adhesion states.…”

“…This behavior can be related to the effect of nanoparticles interactions in the small deformation. [58,65] For the plastic and especially viscoplastic regions of the S80/X20 blend and nanocomposites with compatibilizer, the deviation between the prediction model and the experimental curve is more obvious. According to the analysis of the mechanical properties and the TEM images, the presence of XNBR-g-GMA compatibilizer in these samples led to the proper dispersion and created interfacial interaction among nanoparticles and SAN/XNBR, and hence, increased the elongation by facilitating stress transfer among components.…”

Hybrid Effect in In-Plane Loading of Carbon/Glass Fibre Based Inter- and Intraply Hybrid Composites

“…Although the second definition can also be applied to several mechanical properties other than just failure strain, the application of this definition is not straight forward and should be used with great care owing to three reasons: (i) the Rule of Mixtures is not necessarily linear for all properties; (ii) each Rule of Mixtures needs a certain composition parameter and choosing the right one is important [1,6]; and (iii) it does not work for all mechanical properties, for example, Rule of Mixtures cannot be applied for flexural strength. Synergistic effect is also reported for hybrid composites with two or more resin systems [7] or additional constituents such as nano-particles and additives [8,9], but the focus of the current work is on hybrid composites with two or more fibre types. Although both experimental methods and computational models have been attempted since 1970s to understand the hybrid effect in composites [1,2,10,11], there exist several contradictions and gaps in their reports.…”

Preparation of waterborne elastic polyesters by chain extension with isophorone diisocyanate as a chain extender

“…At the first yield, as the content of hard segment polyester increased, the yield stress value increased, while the yield strain value decreased slightly, demonstrating a supporting effect of the hard segment on the strain of the extended polyester and an increase of molar mass led to the entanglement of polyester chains. The polyester then underwent a strain softening more or less, in which the molecular chains were oriented along the stretch direction and disentangled, leading to the intermolecular slippages and corresponding decreased tensile resistance . Taking EPET10 as an example, its breaking elongation was greatly increased more than 1000% in comparison with the soft segment polyester, as presented in Figures and .…”