Fabrication, characterization, and properties of poly(ethylene‐co‐vinyl acetate)/magnetite nanocomposites

Abstract

Poly(ethylene-co-vinyl acetate) (EVA)/magnetite (Fe 3 O 4 ) nanocomposite was prepared with different loading of Fe 3 O 4 nanoparticles. The mixing and compounding were carried out on a two-roll mixing mill and the sheets were prepared in a compressionmolding machine. The effect of loading of nanoparticles in EVA was investigated thoroughly by different characterization technique such as transmission electron microscopy (TEM), X-ray diffraction (XRD), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), limiting oxygen index (LOI), and technological properties. TEM analysis showed the uniform dispersion of filler in the polymer matrix and the dispersion of filler decreased with increase in filler content. XRD of the nanocomposite revealed the more ordered structure of the polymer chain. An appreciable increase in glass transition temperature was observed owing to the restricted mobility of Fe 3 O 4 -filled EVA nanocomposite. TGA and flame resistance studies indicated that the composites attain better thermal and flame resistance than EVA owing to the interaction of filler and polymer segments. Mechanical properties such as tensile strength, tear resistance, and modulus were increased for composites up to 7 phr of filler, which is presumably owing to aggregation of Fe 3 O 4 nanoparticle at higher loading. The presence of Fe 3 O 4 nanoparticles in the polymer matrix reduced the elongation at break and impact strength while improved hardness of the composite than unfilled EVA. The change in technological properties had been correlated with the variation of polymer-filler interaction estimated from the swelling behavior.

Synthesis, physical and magnetic properties of BaFe12O19/P(VDF-TrFE) multifunctional composites

“…BaFe 12 O 19 /P(VDF-TrFE) composite. Such smooth decrease of Young's modulus indicates that the BaFeO microparticles act as a defect within the polymer matrix and not as reinforcement [15]. This effect remains for inclusion levels at least up to 20 wt.%.…”

Fabrication and characterization of biopolymer nanocomposites from natural resource materials

“…The infrared (IR) spectra of the composites were recorded on a JASCO (model 4100) FTIR spectrophotometer in the region 400-4000 cm 21 . The UV-vis absorption spectrum of polymer composites in aqueous medium was obtained using a Hitachi U-3000 spectrophotometer.…”

“…Besides, the band at 1417 cm 21 is also shifted to higher energy (1450 cm 21 ), indicating that the carboxyl group within the polymer is influenced by the magnetite nanoparticles. Furthermore, the co-ordination interaction between the metal oxide nanoparticles and the cashew gum causes some observable changes in the spectrum of composite which is the clear evidence for the encapsulation of nanoparticles by the cashew gum unit.…”

Silver‐Doped Zinc Oxide as a Nanofiller for Development of Poly(vinyl alcohol)/Poly(vinyl pyrrolidone) Blend Nanocomposites

“…[17][18][19] Doping of conductive metal with transition metal oxide nanoparticles has considerable interest due to their application in electrical, electronics, optics, and photonics. 20,21 In this work, a simple, inexpensive, and environmentally friendly solution blending method is used for the fabrication of PVA/PVP composite with different concentrations of silverdoped zinc oxide nanoparticles.…”