The Effect of Surface Modification of TiO₂ on Mechanical Properties of Polyethylene Composite Film

Abstract

To achieve a proper dispersion of nano-particles polymer matrix and to yield a better compatibility between the nano-particles and polymeric material, the use of different coupling agents for surface modification of nano-particle is recommended. In this research, surface of TiO2 was modified by hydrolytic condensation of titanium isopropoxide with three different silane coupling agents, hexadecyl trimethoxysilane (HTMS), triethoxyvinylsilane (TEVS) and aminopropyl trimethoxysilane (APS). The grafting of silane coupling agents on the TiO2 nano-particles surface was characterized using TGA and FTIR techniques. Mechanical properties of polyethylene composite films were evaluated via tensile strength measurement. Surface morphology of the particle was studied by SEM and TEM. The result showed that surface treatment TiO2 nano-particles with TEVS could improve dispersibility of TiO2 and showed the optimum mechanical properties.

A review of current coupling agents for modification of metal oxide nanoparticles

“…The surface modifications of metal oxide NPs by silane coupling agents improve the compatibility of NP surface (hydrophilic) with a hydrophobic polymer surface. Also increases the dispersion stability in organic media [88,89]. PEG, amino, vinyl and phenyl are some of the popular functional groups at the other end of these silane coupling agents.…”

Synergic Effect of TiO2 Filler on the Mechanical Properties of Polymer Nanocomposites

“…Tangchantra et al [ 102 ] investigated the effect of different silane coupling agents on the surface grafting of TiO 2 with hexadecyl trimethoxysilane (HTMS), triethoxyvinylsilane (TEVS), and aminopropyl trimethoxysilane (APS). The results showed that silane coupling agents could modify the surface of TiO 2 nanoparticles via the hydrolytic condensation of titanium isopropoxide.…”

The Corrosion Protection Performance of the Polyurethane Coatings Containing Surface Modified Fe2O3Nanoparticles

“…Then, the silanols react with hydroxyl groups on the inorganic particle's surface and form siloxane bonds through the elimination of water. [13][14][15][16] Microsized Fe 2 O 3 pigments are both nontoxic and low cost, which has led to them becoming a common anticorrosion pigment used in polymeric coatings. Their corrosion protective performance can be further improved by the inclusion of other divalent metals.…”