Synthesis and properties of hybrid materials obtained by in situ copolymerization of ethylene and propylene in the presence of Al₂O₃ nanofibers (Nafen^TM) on catalytic system rac‐Et(2‐MeInd)₂ZrMe₂/isobutylalumoxane

Abstract

Nanofibers of Al 2 O 3 (commercial product Nafen TM ) with characteristic length of 100 nm and diameter of 10 nm were used to create new hybrid materials based on copolymer of ethylene and propylene. Nanocomposites were obtained by in situ catalytic copolymerization on the system rac-Et(2-MeInd) 2 ZrMe 2 /isobutylalumoxane. Formation of the nanocomposites with uniform distribution of Nafen nanoparticles in polymer matrix was confirmed by scanning and transmission electron microscopy. According to dynamic mechanical analysis data, introduction of the nanofiller in an amount of up to 3 wt % leads to an increase in glass transition temperature by 10 8C (E 00 ) and by 21 8C (tan d). The nanocomposites exhibit improved physico-mechanical properties (tensile strength and elongation at break). It is shown that the nanofiller significantly improves resistance of the nanocomposite to the thermo-oxidative and thermal degradation.

Influence of Alumina Nanofibers Sintered by the Spark Plasma Method on Nickel Mechanical Properties

“…Alumina nanofibers have beneficial properties that make them an excellent hardener for metals. They have a high tensile strength (up to 12 GPa), thermal stability of up to 1200 • C, a faceted surface for better bonding with the matrix, and a high modulus of elasticity (400 GPa) [23,24].…”

Dielectric Studies of Bi2MoO6/Graphene Oxide and La-Doped Bi2MoO6/Graphene Oxide Nanocomposites

“…Bismuth molybdate (Bi 2 MoO 6 ) is a versatile metal molybdate with photoelectric characteristics that has been widely used as a photocatalyst and as an anode material in lithium batteries. Some notable citations in this regard are available in the literature [22][23][24][25][26].…”