Scholarlink

<p>EVOH/PVDF polymer nanocomposites reinforced with graphene oxide (GO) were successfully fabricated using the solution casting technique. Different GO loadings (0.5–6.0 wt%) were incorporated to investigate their influence on the structural, thermal, optical, electrical, and dielectric properties of the blend. X-ray diffraction (XRD) analysis revealed the semi-crystalline nature of the EVOH/PVDF matrix and the emergence of a characteristic diffraction peak at 2<i>θ</i> ≈ 26.75°, corresponding to graphene oxide, with increasing intensity at higher GO contents, indicating effective incorporation of GO. FT-IR spectra confirmed strong intermolecular interactions between GO and the EVOH/PVDF blend through hydrogen bonding. Optical studies showed increased UV absorption upon GO addition, highlighting the potential of the nanocomposites for UV-blocking applications. Electrical and dielectric measurements revealed that AC conductivity increased with frequency and GO content, while the dielectric constant (<i>ε</i>′) and dielectric loss (<i>ε</i>″) decreased with increasing frequency, governed by interfacial polarization and charge hopping mechanisms. These findings confirm that EVOH/PVDF-GO nanocomposites exhibit improved thermal, optical, and electrical performance, making them promising candidates for optoelectronic devices and other advanced functional applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Electrical, dielectric, and optical properties of graphene oxide-reinforced ethylene vinyl alcohol/polyvinylidene fluoride blend for advanced functional applications

  • 期刊论文

  • 发表日期：

    2026年6月20日

查看全文
  • Norah Alwadai,
  • Mashael M. Alharbi,
  • M. A. El-Morsy,
  • A. A. Menazea,
  • M. O. Farea

摘要

EVOH/PVDF polymer nanocomposites reinforced with graphene oxide (GO) were successfully fabricated using the solution casting technique. Different GO loadings (0.5–6.0 wt%) were incorporated to investigate their influence on the structural, thermal, optical, electrical, and dielectric properties of the blend. X-ray diffraction (XRD) analysis revealed the semi-crystalline nature of the EVOH/PVDF matrix and the emergence of a characteristic diffraction peak at 2θ ≈ 26.75°, corresponding to graphene oxide, with increasing intensity at higher GO contents, indicating effective incorporation of GO. FT-IR spectra confirmed strong intermolecular interactions between GO and the EVOH/PVDF blend through hydrogen bonding. Optical studies showed increased UV absorption upon GO addition, highlighting the potential of the nanocomposites for UV-blocking applications. Electrical and dielectric measurements revealed that AC conductivity increased with frequency and GO content, while the dielectric constant (ε′) and dielectric loss (ε″) decreased with increasing frequency, governed by interfacial polarization and charge hopping mechanisms. These findings confirm that EVOH/PVDF-GO nanocomposites exhibit improved thermal, optical, and electrical performance, making them promising candidates for optoelectronic devices and other advanced functional applications.