Journal Published Online: 27 February 2025
Volume 53, Issue 4

Comparative Analysis of the Polyacrylonitrile-Titania and Amidoxime Polyacrylonitrile-Titania Composite Fibers

CODEN: JTEVAB

Abstract

This study compares the physical properties such as surface morphology, chemical bonding, crystalline properties, and thermal stability of composite nanofibers produced by reinforcing polyacrylonitrile (PAN) with 5, 8, and 11 wt.% titanium isopropoxide (Tipp) and investigates the strengthening of PAN modified to amidoxime polyacrylonitrile (AOPAN) with 5 wt.% Tipp. The analysis was performed using field emission scanning electron microscopy, atomic force microscopy, Fourier-transform infrared spectroscopy, X-ray diffraction, and differential scanning calorimetry-thermogravimetric analysis. The results demonstrated the emergence of new bonds, viz., C–N and C=N, when PAN was converted into AOPAN. In contrast, no new bonds were observed when Tipp was added to AOPAN. Consequently, the increase in the average crystalsize and crystallinity was larger (488.235 % and 61.38 %, respectively) when PAN was converted into AOPAN than when the PAN was strengthened with 5 wt.% Tipp (222.8 % and 38.56 %). However, the crystalline properties declined when AOPAN was reinforced with 5 wt.% Tipp. Moreover, after the modification of PAN to AOPAN, the weight loss decreased by 32.53 % owing to a low increase in surface roughness as the root mean square increased by 43.95 % and the fiber diameters increased from 244.315 ± 54.721 nm to 341 ± 69 nm.

Author Information

Habeeb, Salih Abbas
Department of Polymers Engineering and Petrochemical Industries, Faculty of Materials Engineering, University of Babylon, Al-Hilla, Iraq
Hussein, Abbas Obaid
Medical Laboratory Technology Department, College of Medical Technology, the Islamic University, Najaf, Iraq
Ayham, Mustafa Hussain
Department of Polymers Engineering and Petrochemical Industries, Faculty of Materials Engineering, University of Babylon, Al-Hilla, Iraq
Pages: 12
Price: $25.00
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Stock #: JTE20230777
ISSN: 0090-3973
DOI: 10.1520/JTE20230777