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Article

Effect of Pyrolysis Temperature on the Electrical Property and Photosensitivity of a PAN-PMMA Derived Carbon Fiber

1
Walnut High School, 400 Pierre Rd, Walnut, CA 91789, USA
2
Department of Natural, Physical and Health Sciences, Citrus College, 1000 W Foothill Blvd, Glendora, CA 91741, USA
3
Department of Natural, Physical and Health Sciences, Cypress College, 9200 Valley View, Cypress, CA 90630, USA
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Diamond Bar High School, 21400 Pathfinder Rd, Diamond Bar, CA 91765, USA
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Department of Chemical and Biomolecular Engineering, The University of California, Los Angeles, 405 Hilgard Ave, Los Angeles, CA 90095, USA
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Department of Electromechanical Engineering Technology, California State Polytechnic University, Pomona, 3801 W Temple Avenue, Pomona, CA 91768, USA
7
Department of Mechanical Engineering, California State Polytechnic University, Pomona, 3801 W Temple Avenue, Pomona, CA 91768, USA
*
Author to whom correspondence should be addressed.
ChemEngineering 2019, 3(4), 86; https://doi.org/10.3390/chemengineering3040086
Received: 28 July 2019 / Revised: 25 September 2019 / Accepted: 25 October 2019 / Published: 1 November 2019
(This article belongs to the Special Issue Carbon-Based Materials and Their Electrochemical Applications)
Fibers are promising materials being utilized in electronics, principally in the areas of capacitors and sensors. In this study, we examine the effect of pyrolysis temperature on the electrical conductive behavior and photosensitivity of a carbon-based fiber, which was made by electrospinning a polymer solution containing polyacrylonitrile (PAN), polymethyl methacrylate (PMMA), and dimethylformamide (DMF). Converting the polymeric fiber into a carbon fiber was performed through the controlled pyrolysis during which oxidation, stabilization, and carbonization happened. After oxidation at an elevated temperature, the linear polymer fiber was stabilized to have a backbone structure. Then the oxidized fiber was treated in an even higher temperature range to be partially carbonized under the protection of argon gas. We utilized multiple samples of the fibers treated at various pyrolysis temperatures inside a heat furnace and examined the effects of the temperatures on the properties. The partially carbonized fiber is highly active in view of electron generation under photon energy excitation. The unique electrical and photovoltaic property are due to their semiconducting behavior. The morphology of the specimen before and after the pyrolysis was examined using scanning electron microscopy (SEM). The SEM images displayed the shrinkage of the fiber due to the pyrolysis. There are two stages of pyrolysis kinetics. Stage I is related to the oxidation of the PAN polymer. Stage II is associated with the carbonization and the activation energy of carbonization is calculated as 118 kJ/mol. View Full-Text
Keywords: carbon fiber; pyrolysis; oxidation; carbonization; electrical property; photosensitivity; carbonization kinetics; activation energy carbon fiber; pyrolysis; oxidation; carbonization; electrical property; photosensitivity; carbonization kinetics; activation energy
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MDPI and ACS Style

Xu, T.; Nguyen, A.; Rosas, N.; Flores, I.; Chen, C.; Gan, J.B.; Hamdan, A.S.; Gan, Y.X. Effect of Pyrolysis Temperature on the Electrical Property and Photosensitivity of a PAN-PMMA Derived Carbon Fiber. ChemEngineering 2019, 3, 86. https://doi.org/10.3390/chemengineering3040086

AMA Style

Xu T, Nguyen A, Rosas N, Flores I, Chen C, Gan JB, Hamdan AS, Gan YX. Effect of Pyrolysis Temperature on the Electrical Property and Photosensitivity of a PAN-PMMA Derived Carbon Fiber. ChemEngineering. 2019; 3(4):86. https://doi.org/10.3390/chemengineering3040086

Chicago/Turabian Style

Xu, Tyler; Nguyen, Antonino; Rosas, Noe; Flores, Isidro; Chen, Cindy; Gan, Jeremy B.; Hamdan, Anan S.; Gan, Yong X. 2019. "Effect of Pyrolysis Temperature on the Electrical Property and Photosensitivity of a PAN-PMMA Derived Carbon Fiber" ChemEngineering 3, no. 4: 86. https://doi.org/10.3390/chemengineering3040086

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