Synthesis and characterization of fluorine functionalized graphene oxide dispersed quinoline‐based polyimide composites having low‐k and UV shielding properties

Hariharan, A (2022) Synthesis and characterization of fluorine functionalized graphene oxide dispersed quinoline‐based polyimide composites having low‐k and UV shielding properties. Polymers for Advanced Technologies, 33 (1). pp. 427-439. ISSN 1042-7147

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Abstract

Polyimide nanocomposites having low‐k and UV shielding properties have been developed using fluorine functionalized graphene oxide and bis(quinoline amine) based polyimide. The polyimide was synthesized using bis(quinoline amine) and pyromellitic dianhydride at appropriate experimental conditions, and its molecular structure was confirmed through various spectral analysis such as FTIR and NMR. The polyimide (PI) composites were prepared using bis(quinoline amine), pyromellitic dianhydride, and separately filled with 1, 5, 10 wt% of fluorinated graphene oxide (FGO) through in situ polymerization. The polymer composites were characterized using thermo gravimetric analysis (TGA), X‐ray powder diffraction (XRD), and scanning electron microscopy (SEM). In addition, the water contact angle, dielectric behavior, and UV–Vis shielding behavior of FGO/PI composites were evaluated. The value of the water contact angle of the polyimide was increased with increment of FGO in the polyimide matrix. The highest water contact angle of polyimide composites observed 108° was obtained for 15 wt% FGO reinforced polyimide composite. The value of the dielectric constant for neat, 1, 5, and 15 wt% FGO reinforced polyimide composites was obtained as 4.5, 3.7, 2.6, and 2.0, respectively. It is also observed from by UV–Vis spectroscopy analysis that the FGO reinforced polyimide composites have good UV shielding behavior.

Item Type: Article
Uncontrolled Keywords: Contact angle; Fourier transform infrared spectroscopy; Low-k dielectric; Reinforcement; Scanning electron microscopy; Shielding; Spectrum analysis; Thermogravimetric analysis; X ray powder diffraction; Bis(quinoline amine); Fluorine functionalized graphene oxide; Functionalized; Hydrophobic behavior; Hydrophobics; Low dielectric constants; Polyimide composites; Polyimide matrix; UV shielding behavior; UV-shielding
Subjects: J Physics > Nanomaterials
Divisions: Chemistry
Depositing User: Users 5 not found.
Date Deposited: 01 Jul 2024 04:11
Last Modified: 01 Jul 2024 04:11
URI: https://ir.psgitech.ac.in/id/eprint/676

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