Preparation and Preliminary Dielectric Characterization of Structured C60-Thiol-Ene Polymer Nanocomposites Assembled Using the Thiol-Ene Click Reaction

Materials

Noora H. Al-Qahtani¹  Maryam M. Al-Ejji¹  Mohammad K. Hassan¹  J. Paige Buchanan²  Hanaa M. Ahmed²  Amber D. Windham²  Kenneth A. Mauritz³  Randy K. Buchanan⁴ 

[1] Center for Advanced Materials, Qatar University, Doha P.O. Box 2713, Qatar;Department of Chemistry and Biochemistry, University of Southern Mississippi, 118 College Drive, Hattiesburg, MS 39406, USA;School of Polymers and High Performance Materials, University of Southern Mississippi, Hattiesburg, MS 39406, USA;U.S. Army Engineer Research and Development Center, Information Technology Laboratory, Institute for Systems Engineering Research, 3909 Halls Ferry Road, Vicksburg, MS 39180, USA;

关键词: dielectric properties;    fullerenol;    thiol-ene;    nanocomposites;   

DOI  :  10.3390/ma8115424

来源: DOAJ

【 摘 要 】

Fullerene-containing materials have the ability to store and release electrical energy. Therefore, fullerenes may ultimately find use in high-voltage equipment devices or as super capacitors for high electric energy storage due to this ease of manipulating their excellent dielectric properties and their high volume resistivity. A series of structured fullerene (C60) polymer nanocomposites were assembled using the thiol-ene click reaction, between alkyl thiols and allyl functionalized C60 derivatives. The resulting high-density C60-urethane-thiol-ene (C60-Thiol-Ene) networks possessed excellent mechanical properties. These novel networks were characterized using standard techniques, including infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and thermal gravimetric analysis (TGA). The dielectric spectra for the prepared samples were determined over a broad frequency range at room temperature using a broadband dielectric spectrometer and a semiconductor characterization system. The changes in thermo-mechanical and electrical properties of these novel fullerene-thiol-ene composite films were measured as a function of the C60 content, and samples characterized by high dielectric permittivity and low dielectric loss were produced. In this process, variations in chemical composition of the networks were correlated to performance characteristics.

【 授权许可】

Unknown