Silica nanoparticles were prepared

Silica nanoparticles were prepared from tetraethoxysilane (TEOS) in ethanol solvent by sol-gel method with
alkaline catalyst. The IR spectrum of silica nanoparticles shows that they were successfully prepared through strong
peaks characterizing the stretching and bending vibration of Si-O group. Silica nanoparticles were formed in sphere
shape with the average size particle about 50-100 nm (as shown in FESEM image). The X-Ray diffraction (XRD)
pattern exhibits silica nanoparticles are amorphous. With the above characteristics, silica nanoparticles are suitable to
use as reinforcement for ethylene vinyl acetate (EVA) copolymer. The obtained results of rheological and thermal
properties of EVA/silica nanocomposites proved that the dynamic storage modulus and thermal stability of EVA were
remarkable enhanced by using nanosilica. Specially, addition of ethylene vinyl acetate copolymer grafted maleic
anhydride (EVAgMA) as a compatibilizer into EVA/silica nanocomposites, the above properties of the nanocomposites
are significantly increased.

Kết quả (Anh) 2:

Silica nanoparticles prepared from tetraethoxysilane là (TEOS) in ethanol solvent by sol-gel method with
alkaline catalyst. The IR spectrum of silica nanoparticles shows có They were successfully prepared through strong
peaks stretching and bending vibration characterizing the Si-O group of. Silica nanoparticles formed là sphere in
shape with the average particle size about 50-100 nm (as Shown in FESEM image). The X-Ray diffraction (XRD)
pattern exhibits are amorphous silica nanoparticles. With the above Characteristics, silica nanoparticles are suitable to
use as reinforcement for ethylene vinyl acetate (EVA) copolymer. The results of rheological and thermal thu được
properties of EVA / silica Nanocomposites dynamic storage modulus proved rằng and thermal stability that of EVA là
Remarkable enhanced by using nanosilica. Specially, to addition of ethylene-vinyl acetate copolymer grafted maleic
anhydride (EVAgMA) as a compatibilizer Into EVA / silica Nanocomposites, the above properties of the Nanocomposites
are significantly Increased.