Spectroscopic investigations on PVDF‐Fe2O3 nanocomposites. Issue 30 (6th January 2020)

• Record Type: Journal Article
• Authors: Chipara, Dorina; Kuncser, Victor; Lozano, Karen; Alcoutlabi, Mataz; Ibrahim, Elamin; Chipara, Mircea
• Is Part Of: Journal of applied polymer science. Volume 137:Issue 30(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-01-06
• Subjects: composites -- phase behavior -- nanoparticles -- nanowires and nanocrystals -- spectroscopy -- X‐ray; Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.48907
• Languages: English
• ISSNs: 0021-8995

Abstract

ABSTRACT: Polyvinylidene fluoride‐iron oxide (PVDF‐Fe2 O3 ) nanocomposites have been obtained my melt mixing of PVDF with Fe2 O3 nanoparticles. The interactions between the polymeric matrix and the nanofiller have been investigated by wide angle X‐ray scattering (WAXS), Fourier transform infrared spectroscopy (FTIR), and Raman spectroscopy, using both red and green excitations (lasers). WAXS, FTIR, and Raman spectra confirm that all samples contain α PVDF as the major crystalline form of the polymeric matrix. Experimental data revealed small changes in the positions of X‐ray lines as well as modifications of the width of X‐ray lines upon loading by Fe2 O3 nanoparticles. FTIR and Raman spectra are dominated by the lines of the polymeric matrix. Within the experimental errors, the positions of Raman lines are not affected by the wavelength of the incoming electromagnetic radiation, although they are sensitive to the strain of the polymeric matrix induced by addition of the nanofiller. The loading of the polymeric matrix with nanoparticles stretches the macromolecular chains, affecting their vibrational spectra (FTIR and Raman). A complex dependence of the positions of some Raman and FTIR lines on the loading with Fe2 O3 is reported. The manuscript provides a detailed analysis of the effects of nanofiller on the position of WAXS, FTIR, and Raman lines. © 2020 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48907. Abstract : Spectra of PVDF‐Fe2 O3 nanocomposites with various loadings. Left upper corner: Wide Angle X‐Ray. Left lower corner: FTIR. Right upper corner: Raman spectra using a red laser for excitation. Right lower corner: Raman spectra using a green laser for excitation.