Conducting cellulose/TiO2 composites by in situ polymerization of pyrrole. (15th July 2017)

• Record Type: Journal Article
• Authors: ElNahrawy, Amany M.; Haroun, Ahmed A.; Hamadneh, Imad; Al-Dujaili, Ammar H.; kamel, Samir
• Is Part Of: Carbohydrate polymers. Volume 168(2017)
• Page Start: 182
• Page End: 190
• Publication Date: 2017-07-15
• Subjects: Cellulose -- Polypyrrole -- Nano-composite -- TiO2-nanoparticles -- Dielectric properties; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2017.03.066
• Languages: English
• ISSNs: 0144-8617

Abstract

Graphical abstract: Highlights: Cellulose/polypyrrole-TiO2 composite was prepared via oxidative polymerization. Cellulose and TiO2 increased the thermal stability of the polypyrrole system. AC conductivity and dielectric permittivity increased with increasing polypyrrole. Abstract: Cellulose/polypyrrole and cellulose/polypyrrole-TiO2 composites were prepared via in situ oxidative chemical polymerization of pyrrole using FeCl3 as oxidant. The concentration effect of pyrrole on the structure and properties of prepared matrix has been investigated. Furthermore, the structure of the prepared materials was characterized using Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), X-ray Diffraction (XRD), and Thermal gravimetrical analysis (TGA). The results exhibited that the addition of cellulose and TiO2 increase the thermal stability of the polypyrrole system. Moreover, dielectric properties of the obtained composites were studied over frequency range from 42 Hz to 5 MHz. The electrical measurements including dielectric constant, ε′(ω), dielectric loss, ε′′(ω), loss tangent, tan δ and ac conductivity, σac were carried.