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Title: Main structural and mechanical properties of electrospun PAN-based carbon nanofibers as a function of carbonization maximum temperature
Journal: Polymer Bulletin
Author: Mahdi Valinejad Qanati, Ali Rasooli, Mohammad Rezvani
Year: 2022
Address: Department of Materials Science and Engineering, Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran
Abstract: In this study, PAN-based carbon nanofibers (CNFs) were synthesized via electrospinning followed by stabilizing and carbonization. The carbonization process was performed by heating the fibrous mats up to a maximum temperature in the region of 800–1600 °C. The effect of carbonization maximal temperature on the structure and tensile strength of carbon nanofiber mats was investigated via SEM, elemental analysis, X-ray diffraction, Raman spectroscopy and tensile testing. Polyacrylonitrile (PAN) concentrations of 6–10% (w/w) and voltages of 14–16 kV were recognized as the optimal electrospinning parameters in order to synthesize of nanofibrous mats without any agglomerated nanoparticles or beads in the mats structure. It is clear from the results that carbon content, crystalline stacking size (Lc), inplane crystallite size (La) and the number of graphene layers in single crystallite continuously increased with rising carbonization maximum temperature from 800 to 1600 °C, while interlayer d-spacing ( d002) decreased at the maximum temperatures of 1000–1400 °C, firstly. This value increased again at the maximum temperatures above1400 °C due to the formation of considerable shrinkages and pores in the CNFs structure. The highest value of tensile strength (206–223 MPa) was recorded for the CNFs mats carbonized up to 1200–1400 °C.
Keywords: CNFs · PAN · DMF · Electrospinning · Carbonization · Poisson Ratio
Application: Optimizing Electrospinning Parameters
Product Model 1: Electroris
Product Model 2:
URL: #https://link.springer.com/article/10.1007/s00289-020-03520-w#