On striking variation in impact toughness of polyethylene–clay and polypropylene–clay nanocomposite systems: The effect of clay–polymer interaction

Effects of environmental aging in polypropylene obtained by injection molding

“…In Figure 5B was possible to note that the bands of unsatured groups started after 60 days of environmental aging. In Figure 5B at 90 days of exposure, it was observed that the intensity of unsaturated groups at the same time that the carbonyl groups decreases begin to be evidenced report previously [22].…”

Microhardness of PEEK/ceramic micro- and nanocomposites: Correlation with Halpin–Tsai model

“…This is probably due to the dominant role of increased crystallinity [18] and PEEK morphology in the vicinity of the nanoparticles of nanocomposites [19]. In general, the addition of micro-or nanoparticles to polymer matrices significantly increases the mechanical properties, particularly modulus and hardness, of the composites if the particles are strongly bonded to the polymer matrix [20][21]. Recently, Misra et al studied the effect of morphology on the scratch hardness of polymer/clay nanocomposites [22].…”

Dynamic Response of Nanocomposite Laminates During Low, Medium and High Velocity Impact Loading

“…A common way of doing this is to define the structure's modal parameters natural frequency and damping factor. The flexural damping capacity of the composite laminates is due to the material properties, the ply orientation and the stacking sequences of the layers [6][7][8]. In the past, there were several works on analytical models to predict the damping responses of composite laminates for various lay-up specifications [9][10].…”