A new thermoplastic vulcanizate (TPV)/organoclay nanocomposite: Preparation, characterization, and properties

Abstract

The preparation, characterization, and properties of the new thermoplastic vulcanizate (TPV)/organoclay nanocomposites are reported in this article. The nanocomposites were prepared by the melt intercalation method. The organoclay was first treated with glycidyl methacrylate, which acts as a swelling agent for organoclays, as well as a grafting agent for TPV (in the presence of dicumyl peroxide) during the melt mixing. The nanocomposite was intercalated, as evidenced by X-ray diffraction. The tensile modulus of the 5% TPV/organoclay nanocomposite was higher than that of the 20% talc-filled microcomposite. The storage modulus of the nanocomposite was higher than that of the pristine TPV. The most important observation is obtained from dynamic mechanical analysis, which reveals that the glass-transition temperature of the polypropylene phase of the nanocomposite increases (as compared to virgin TPV), whereas the ethylene-propylene-diene monomer phase remains almost the same.

Properties of polypropylene/(natural rubber)/organomontmorillonite nanocomposites prepared by melt blending

“…A similar trend (a maximal tensile strength for a certain nanofiller concentration) was observed in nanocomposite systems [22–25]. A maximal tensile strength and a maximal elongation at break for a certain nanofiller concentration were also observed in a nanocomposite system [26].…”

“…It can be seen that the formulation containing 3 phr of organoclay has the lowest solvent uptake rate or the lowest solvent permeability. The decrease of solvent uptake for a thermoplastic elastomer reinforced with organoclay was previously reported [23].…”

“… a The solvent uptake rate was calculated as follows [23]: solvent uptake rate = ( W 2 − W 1 )/ W 1 × 100%, where W 2 is the weight of the wet sample and W 1 is the weight of the dry sample. …”

Preparation and characterization of thermoplastic vulcanizate/silica nanocomposites

“…Therefore, there is very little information available regarding TPO-based and TPVbased nanocomposites. 13,14 In this study, we report on the preparation, characterization, and properties of a TPV/silica (SiO 2 ) nanocomposite. The properties of fabricated TPV/SiO 2 nanocomposites depend on the successful dispersion of SiO 2 into the TPV-based matrix.…”

Polypropylene/Ethylene–Propylene–Diene Terpolymer Blends

“…Different kinds of nanofiller have been used to prepare nanocomposites like nanoclay, spherical nanoparticles, carbon nanotube, among others (58)(59)(60)(61)(62)(63)(64)(65)(66)(67)(68)(69)(70)(71)(72). In addition, the development of environment-friendly polymers is one of recent important issues.…”