Influence of physical interaction between organoclay and poly(ethylene-co-vinyl acetate) matrix and effect of clay content on rheological melt state

Novel electrically conductive polyurethane/montmorillonite-polypyrrole nanocomposites

“…The rheological percolative network increases the number of interfaces between conductive fillers, and thus an enhancement of the both elastic and viscous components is observed. The loss tangent (tan ') curves as a function of frequency reported in Figure 8 can provide an insight on the site-specific interactions between the polymer matrix and conducting fillers [54,55]. According to Han et al [56], for a composite system with high-level of conducting phase agglomeration, a larger and more intense tan' curve with respect of neat insulating polymer can be observed.…”

Hierarchical microstructure changes and the molecular mechanism of polypropylene under a critical failure strain during creep

“…Because the samples were not measured at one time, two conditions were applied. 1060 mm for sample-todetector distance and 60 min for exposure time were applied for samples with ε ¼ 0, 5,15,17,20,25,30, 110% as the final strains, while 1753 mm for sample-to-detector distance and 20 min for explosion time were applied for samples with ε ¼ 10, 40, 55, 70, 90, 135, 160% as the final strains. The scattering intensity distributions were not affected by these two conditions, while the affected intensities were not compared together.…”

Effect of the epoxycyclohexyl polyhedral oligomeric silsesquioxane content on the dynamic fragility of an epoxy resin

“…The relaxation (H(τ)) and retardation (L(τ)) spectra were obtained with the aid of the nonlinear regularization (NLREG) software program [24][25][26][27]. The viscoelastic functions H(τ) and L(τ) were obtained from the storage (E'') and loss (E'') moduli obtained from the frequency scanning of the glass transition temperature (T g ) for each sample analyzed.…”

“…In addition, since the relaxation times become more heterogeneous over time, it is expected that these phenomena will be noted for lower values. This occurs since there is proportionality between the elastic and plastic deformations, i.e., higher elastic deformation for H(τ) leads to lower and less pronounced effect on the plastic deformation for L(τ) [24].…”