Investigation on Crystal-Structure, Thermal and Electrical Properties of PVDF Nanocomposites with Cobalt Oxide and Functionalized Multi-Wall-Carbon-Nanotubes

Farhan; Shabir Ahmad; Hameed Ullah; Zia Ur Rehman; Mohsan Nawaz; Imad Uddin; Anand Parkash; Hatem R Alamri; Norah Salem Alsaiari; Muhammad Sufyan Javed

doi:10.3390/nano12162796

Investigation on Crystal-Structure, Thermal and Electrical Properties of PVDF Nanocomposites with Cobalt Oxide and Functionalized Multi-Wall-Carbon-Nanotubes

Nanomaterials (Basel). 2022 Aug 15;12(16):2796. doi: 10.3390/nano12162796.

Authors

Affiliations

¹ Department of Chemistry, Islamia College University, Peshawar 25120, Pakistan.
² Department of Chemistry, Hazara University, Mansehra 21120, Pakistan.
³ Department of Chemistry, University of Haripur, Haripur 22620, Pakistan.
⁴ School of Chemistry and Chemical Engineering, Shaanxi Normal University, Chang'an West Street 620, Xi'an 710119, China.
⁵ Physics Department, Aljamoum University College, Umm Al-Qura University, Makkah 25375, Saudi Arabia.
⁶ Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia.
⁷ School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China.

Abstract

Nanocomposites of polyvinylidene fluoride (PVDF) with dimensional (1D) cobalt oxide (Co₃O₄) and f-MWCNTs were prepared successfully by the solution casting method. The impact of 1D Co₃O₄ filler and 1D Co₃O₄/f-MWCNTs co-fillers on the structural, thermal, and electrical behavior of PVDF were studied. The crystal structural properties of pure PVDF and its nanocomposite films were studied by XRD, which revealed a significant enhancement of β-phase PVDF in the resulting nanocomposite films. The increase in β-phase was further revealed by the FTIR spectroscopic analysis of the samples. TG, DTA, and DSC analyses confirmed an increase in thermal stability of PVDF with the addition of nano-fillers as well as their increasing wt.%. From impedance spectroscopic studies, it was found that the DC conductivity of PVDF increases insignificantly initially (up to 0.1 wt.% of nano-fillers addition), but a significant improvement in DC conductivity was found at higher concentrations of the nano-fillers. Furthermore, it was observed that the DC conductivity decreases with frequency. The increase in DC conductivity corresponded to the strong interactions of nano-fillers with PVDF polymer chains.

Keywords: Co3O4; DC conductivity; MWCNTs; PVDF; nanocomposites.

Grants and funding

This research was funded by the Deanship of Scientific Research at Umm Al-Qura University by Grant Code/ number (22UQU4281760DSR01). And this research was also funded by Princess Nourah bint Abdulrahman University Researchers Supporting Project Number (PNURSP2022R19), Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia.