Structural and tribological characteristics of poly(vinylidene fluoride)/functionalized graphene oxide nanocomposite thin films
- Structural and tribological characteristics of poly(vinylidene fluoride)/functionalized graphene oxide nanocomposite thin films
- Elangovan Thangavel; Subramaniya Pillai Ramasundara; Sudhagar Pitchaimuthu; 홍석원; Sang Yun Lee; Shin-Sung Yoo; Dae-Eun Kim; Eisuke Ito; Yong Soo Kang
- Coating; Nanocomposites; Polymer; Durability; Mechanical properties
- Issue Date
- Composites science and technology
- VOL 90, 187-192
- The possibility of engineering the crystalline structure and tribological properties of poly(vinylidene fluoride) (PVDF) thin films (300 nm) using functionalized graphene oxide (FGO) was evaluated. Samples with 0.0, 0.5, 1.0, and 2.0 wt% FGO in the feed were spin cast on Si-wafer, characterized by X-ray photoelectron (XPS), Fourier-transform infrared and Raman spectroscopies, atomic force and scanning electron microscopies, and tribological analyses. XPS and Raman studies were confirmed the incorporation of FGO into the PVDF matrix. PVDF predominantly contained the α-phase. FGO suppressed the growth of the α-phase and favored the formation of the ferroelectric β- and γ-phases. The surface topography changed from featureless to spherulites with or without well-grown dendrites upon FGO incorporation. In case of tribological characteristics, when a 10 mN normal load was applied in a reciprocating motion, the bare Si-wafer, PVDF, and PVDF-FGO-2.0 showed substantial damage after 50, 125, and 50 cycles, respectively. PVDF-FGO-0.5 was very stable even after 120 cycles whereas PVDF-FGO-1.0 showed mild abrasion.
- Appears in Collections:
- KIST Publication > Article
- Files in This Item:
There are no files associated with this item.
- RIS (EndNote)
- XLS (Excel)
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.