Studies on the functional properties of free-standing polyvinyl alcohol/(CoFe2O4/CoFe2) composite films

T. Prabhakaran, R. V. Mangalaraja, Juliano C. Denardin, R. Udayabhaskar, K. Varaprasad, H. D. Mansilla, David Contreras

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

In this report, the functional properties of polyvinyl alcohol/(CoFe2O4/CoFe2) composite films fabricated through solution casting method were reported. Highly-magnetic CoFe2O4/CoFe2 composite was obtained through thermal reduction process and the effect of CoFe2O4/CoFe2 loading on the magnetic, optical, thermal and mechanical properties of PVA composite films was evaluated. At room temperature, the optical transparency was decreased from 68 to 38% but the magnetization was enhanced to 42.37 emu/g by an increase of CoFe2O4/CoFe2 to 15 wt%. Also, the visible-light emission intensity near 400–521 nm was influenced. We demonstrated that the wt% of CoFe2O4/CoFe2 and -OH intramolecular interactions between the polymer-chains played an important role in controlling the functional properties of composites. The performance analysis and comparison of the results revealed that PVA-composite film fabricated with 5 wt% of CoFe2O4/CoFe2 displayed significant magnetization, luminescence intensity, and high tensile-strength compared to others and was found to be a promising candidate for smart devices.

Original languageEnglish
Pages (from-to)211-222
Number of pages12
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume226
DOIs
StatePublished - Dec 2017
Externally publishedYes

Keywords

  • Elastic properties
  • Free-standing films
  • Functional polymer composites
  • Infrared (IR) spectroscopy
  • Magnetic properties
  • Optical properties
  • Solution casting

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